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Document And Entity Information - shares	3 Months Ended
Document And Entity Information - shares	Mar. 31, 2012	Apr. 15, 2012
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Entity Registrant Name	United Continental Holdings, Inc.
Trading Symbol	ual
Entity Central Index Key	0000100517
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
UAL [Member]
Entity Common Stock, Shares Outstanding		332,061,107
United Airlines Inc [Member]
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		205
Continental Airlines Inc [Member]
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		1,000

Statements Of Consolidated Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating revenue:
Passenger-Mainline	$ 5,954	$ 5,707
Passenger-Regional	1,554	1,410
Total passenger revenue	7,508	7,117
Cargo	264	283
Other operating revenue	830	802
Total revenue	8,602	8,202
Operating expense:
Aircraft fuel	3,229	2,672
Salaries and related costs	1,897	1,806
Regional capacity purchase	616	573
Landing fees and other rent	469	473
Aircraft maintenance materials and outside repairs	407	439
Depreciation and amortization	380	388
Distribution expenses	337	350
Aircraft rent	251	253
Special charges (Note 10)	164	77
Other operating expenses	1,123	1,137
Total operating expenses	8,873	8,168
Operating income (loss)	(271)	34
Nonoperating income (expense):
Interest expense	(216)	(254)
Interest capitalized	8	6
Interest income	5	4
Miscellaneous, net	27	(1)
Total other income (expense)	(176)	(245)
Loss before income taxes	(447)	(211)
Income tax expense (benefit)	1	2
Net loss	$ (448)	$ (213)
Loss per share, basic and diluted	(1.36)	(0.65)
United Airlines Inc [Member]
Operating revenue:
Passenger-Mainline	$ 3,158	$ 3,087
Passenger-Regional	876	878
Total passenger revenue	4,034	3,965
Cargo	171	167
Other operating revenue	570	544
Total revenue	4,775	4,676
Operating expense:
Aircraft fuel	1,842	1,512
Salaries and related costs	1,027	987
Regional capacity purchase	379	382
Landing fees and other rent	255	252
Aircraft maintenance materials and outside repairs	267	292
Depreciation and amortization	231	227
Distribution expenses	182	187
Aircraft rent	78	81
Special charges (Note 10)	96	74
Other operating expenses	726	674
Total operating expenses	5,083	4,668
Operating income (loss)	(308)	8
Nonoperating income (expense):
Interest expense	(137)	(168)
Interest capitalized	3	3
Interest income	3	2
Miscellaneous, net	18	(5)
Total other income (expense)	(113)	(168)
Loss before income taxes	(421)	(160)
Income tax expense (benefit)	2
Net loss	(423)	(160)
Continental Airlines Inc [Member]
Operating revenue:
Passenger-Mainline	2,796	2,619
Passenger-Regional	678	532
Total passenger revenue	3,474	3,151
Cargo	92	115
Other operating revenue	356	292
Total revenue	3,922	3,558
Operating expense:
Aircraft fuel	1,387	1,160
Salaries and related costs	847	805
Regional capacity purchase	237	192
Landing fees and other rent	214	220
Aircraft maintenance materials and outside repairs	146	149
Depreciation and amortization	149	161
Distribution expenses	155	163
Aircraft rent	174	172
Special charges (Note 10)	68	3
Other operating expenses	505	504
Total operating expenses	3,882	3,529
Operating income (loss)	40	29
Nonoperating income (expense):
Interest expense	(80)	(83)
Interest capitalized	5	4
Interest income	3	2
Miscellaneous, net	23	(7)
Total other income (expense)	(49)	(84)
Loss before income taxes	(9)	(55)
Income tax expense (benefit)	(1)	2
Net loss	$ (8)	$ (57)

Statements Of Consolidated Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net loss	$ (448)	$ (213)
Fuel derivative financial instruments:
Reclassification into earnings	31	(154)
Change in fair value	93	524
Employee benefit plans:
Amortization of net actuarial (gains) losses	4	(5)
Investments and other	9	4
Comprehensive income (loss) adjustments, before tax	137	369
Total comprehensive income (loss), net	(311)	156
United Airlines Inc [Member]
Net loss	(423)	(160)
Fuel derivative financial instruments:
Reclassification into earnings	15	(125)
Change in fair value	58	385
Employee benefit plans:
Amortization of net actuarial (gains) losses	(1)
Investments and other	4
Comprehensive income (loss) adjustments, before tax	76	260
Total comprehensive income (loss), net	(347)	100
Continental Airlines Inc [Member]
Net loss	(8)	(57)
Fuel derivative financial instruments:
Reclassification into earnings	16	(29)
Change in fair value	35	139
Employee benefit plans:
Amortization of net actuarial (gains) losses	5	(5)
Investments and other	6	4
Comprehensive income (loss) adjustments, before tax	62	109
Total comprehensive income (loss), net	$ 54	$ 52

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 5,606	$ 6,246
Short-term investments	1,667	1,516
Total unrestricted cash, cash equivalents and short-term investments	7,273	7,762
Restricted cash	42	40
Receivables, less allowance for doubtful accounts	1,908	1,358
Aircraft fuel, spare parts and supplies, less obsolescence allowance	645	615
Deferred income taxes	610	615
Prepaid expenses and other	783	607
Total current assets	11,261	10,997
Operating property and equipment: Owned -
Flight equipment	16,035	15,786
Other property and equipment	3,066	3,126
Operating property and equipment - owned, gross	19,101	18,912
Less-Accumulated depreciation and amortization	(4,191)	(4,005)
Operating property and equipment - owned, net	14,910	14,907
Purchase deposits for flight equipment	418	382
Operating property and equipment: Capital leases -
Flight equipment	1,483	1,458
Other property and equipment	235	237
Operating property and equipment - capital leases, gross	1,718	1,695
Less - Accumulated amortization	(602)	(565)
Operating property and equipment - capital leases, net	1,116	1,130
Total property, plant, and equipment, net	16,444	16,419
Other assets:
Goodwill	4,523	4,523
Intangibles, less accumulated amortization	4,712	4,750
Restricted cash	529	529
Other, net	730	770
Other assets total	10,494	10,572
Total assets	38,199	37,988
Current liabilities:
Advance ticket sales	4,433	3,114
Frequent flyer deferred revenue	2,607	2,405
Accounts payable	2,220	1,998
Accrued salaries and benefits	1,139	1,509
Current maturities of long-term debt	1,013	1,186
Current maturities of capital leases	127	125
Other	947	1,057
Total current liabilities	12,486	11,394
Long-term debt	10,408	10,496
Long-term obligations under capital leases	888	928
Other liabilities and deferred credits:
Frequent flyer deferred revenue	2,958	3,253
Postretirement benefit liability	2,415	2,407
Pension liability	1,857	1,862
Advanced purchase of miles	1,668	1,711
Deferred income taxes	1,596	1,603
Lease fair value adjustment, net	1,062	1,133
Other	1,351	1,395
Total non-current liabilities	12,907	13,364
Commitments and contingencies
Stockholder's equity (deficit):
Preferred stock
Common stock	3	3
Additional capital invested	7,130	7,114
Retained earnings (deficit)	(5,311)	(4,863)
Stock held in treasury, at cost	(32)	(31)
Accumulated other comprehensive loss	(280)	(417)
Total stockholders' equity (deficit)	1,510	1,806
Total liabilities and stockholders' equity (deficit)	38,199	37,988
United Airlines Inc [Member]
Current assets:
Cash and cash equivalents	3,338	3,458
Short-term investments	338	275
Total unrestricted cash, cash equivalents and short-term investments	3,676	3,733
Restricted cash	42	40
Receivables, less allowance for doubtful accounts	1,641	763
Aircraft fuel, spare parts and supplies, less obsolescence allowance	335	340
Deferred income taxes	340	348
Receivables from related parties	1,712	228
Prepaid expenses and other	524	447
Total current assets	8,270	5,899
Operating property and equipment: Owned -
Flight equipment	9,177	9,135
Other property and equipment	2,170	2,260
Operating property and equipment - owned, gross	11,347	11,395
Less-Accumulated depreciation and amortization	(3,419)	(3,359)
Operating property and equipment - owned, net	7,928	8,036
Purchase deposits for flight equipment	60	57
Operating property and equipment: Capital leases -
Flight equipment	1,483	1,458
Other property and equipment	65	67
Operating property and equipment - capital leases, gross	1,548	1,525
Less - Accumulated amortization	(581)	(548)
Operating property and equipment - capital leases, net	967	977
Total property, plant, and equipment, net	8,955	9,070
Other assets:
Intangibles, less accumulated amortization	2,269	2,283
Receivables from related parties	1,290
Restricted cash	393	393
Other, net	602	600
Other assets total	4,554	3,276
Total assets	21,779	18,245
Current liabilities:
Advance ticket sales	3,411	1,652
Frequent flyer deferred revenue	2,607	1,484
Accounts payable	1,385	1,109
Accrued salaries and benefits	789	988
Current maturities of long-term debt	615	615
Current maturities of capital leases	124	122
Payables to related parties	105	104
Other	784	853
Total current liabilities	9,820	6,927
Long-term debt	4,987	5,130
Long-term obligations under capital leases	711	735
Other liabilities and deferred credits:
Frequent flyer deferred revenue	2,958	2,018
Postretirement benefit liability	2,119	2,115
Pension liability	85	92
Advanced purchase of miles	1,668	1,442
Deferred income taxes	699	707
Other	980	983
Total non-current liabilities	8,509	7,357
Commitments and contingencies
Stockholder's equity (deficit):
Common stock
Additional capital invested	3,435	3,432
Retained earnings (deficit)	(5,631)	(5,208)
Accumulated other comprehensive loss	(52)	(128)
Total stockholders' equity (deficit)	(2,248)	(1,904)
Total liabilities and stockholders' equity (deficit)	21,779	18,245
Continental Airlines Inc [Member]
Current assets:
Cash and cash equivalents	2,262	2,782
Short-term investments	1,329	1,241
Total unrestricted cash, cash equivalents and short-term investments	3,591	4,023
Receivables, less allowance for doubtful accounts	267	595
Aircraft fuel, spare parts and supplies, less obsolescence allowance	310	275
Deferred income taxes	269	267
Prepaid expenses and other	266	165
Total current assets	4,703	5,325
Operating property and equipment: Owned -
Flight equipment	6,859	6,651
Other property and equipment	895	866
Operating property and equipment - owned, gross	7,754	7,517
Less-Accumulated depreciation and amortization	(772)	(646)
Operating property and equipment - owned, net	6,982	6,871
Purchase deposits for flight equipment	358	324
Operating property and equipment: Capital leases -
Operating property and equipment - capital leases, gross	170	170
Less - Accumulated amortization	(20)	(17)
Operating property and equipment - capital leases, net	150	153
Total property, plant, and equipment, net	7,490	7,348
Other assets:
Goodwill	4,523	4,523
Intangibles, less accumulated amortization	2,445	2,469
Restricted cash	135	135
Other, net	360	364
Other assets total	7,463	7,491
Total assets	19,656	20,164
Current liabilities:
Advance ticket sales	1,022	1,462
Frequent flyer deferred revenue		921
Accounts payable	841	894
Accrued salaries and benefits	350	521
Current maturities of long-term debt	398	571
Current maturities of capital leases	3	3
Payables to related parties	1,493	11
Other	237	279
Total current liabilities	4,344	4,662
Long-term debt	5,013	4,957
Long-term obligations under capital leases	177	193
Other liabilities and deferred credits:
Frequent flyer deferred revenue		1,235
Postretirement benefit liability	296	292
Pension liability	1,772	1,770
Payables to related parties	1,290
Advanced purchase of miles		270
Deferred income taxes	821	820
Lease fair value adjustment, net	1,062	1,133
Other	490	507
Total non-current liabilities	5,731	6,027
Commitments and contingencies
Stockholder's equity (deficit):
Common stock
Additional capital invested	4,160	4,148
Retained earnings (deficit)	466	474
Accumulated other comprehensive loss	(235)	(297)
Total stockholders' equity (deficit)	4,391	4,325
Total liabilities and stockholders' equity (deficit)	$ 19,656	$ 20,164

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2012	Dec. 31, 2011
Receivables, allowance for doubtful accounts	$ 8	$ 7
Aircraft fuel, spare parts and supplies, obsolescence allowance	96	89
Intangibles, accumulated amortization	$ 701	$ 670
Common stock, par value	$ 0.01	$ 0.01
Common shares, authorized	1,000,000,000	1,000,000,000
Common shares, outstanding	332,043,357	330,906,192
United Airlines Inc [Member]
Receivables, allowance for doubtful accounts	$ 5	$ 5
Aircraft fuel, spare parts and supplies, obsolescence allowance	75	73
Intangibles, accumulated amortization	$ 547	$ 534
Common stock, par value	$ 5	$ 5
Common shares, authorized	1,000	1,000
Common shares, outstanding	205	205
Continental Airlines Inc [Member]
Receivables, allowance for doubtful accounts	$ 3	$ 2
Aircraft fuel, spare parts and supplies, obsolescence allowance	21	16
Intangibles, accumulated amortization	$ 154	$ 136
Common stock, par value	$ 0.01	$ 0.01
Common shares, authorized	1,000	1,000
Common shares, outstanding	1,000	1,000

Condensed Statements Of Consolidated Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows from Operating Activities:
Net loss	$ (448)	$ (213)
Adjustments to reconcile net loss to net cash provided (used) by operating activities -
Increase in advance ticket sales	1,319	1,326
Decrease in other liabilities	(470)	(235)
Increase in receivables	(427)	(379)
Depreciation and amortization	380	388
Increase in other current assets	(288)	(190)
Increase in accounts payable	230	98
Increase (decrease) in frequent flyer deferred revenue and advanced purchase of miles	(136)	38
Debt and lease discount amortization	(70)	(44)
Special charges, non-cash portion	12	4
Increase (decrease) in fuel hedge collateral	(1)	178
Other, net	23	34
Net cash provided by operating activities	124	1,005
Cash Flows from Investing Activities:
Capital expenditures	(266)	(205)
Increase in short-term and other investments, net	(148)	(107)
Proceeds from sale of property and equipment	89	39
Aircraft purchase deposits paid, net	(35)	(38)
(Increase) decrease in restricted cash, net	(2)	(9)
Net cash used in investing activities	(362)	(320)
Cash Flows from Financing Activities:
Payments of long-term debt	(479)	(528)
Proceeds from issuance of long-term debt	86	32
Principal payments under capital leases	(23)	(125)
Other, net	14	32
Net cash used in financing activities	(402)	(589)
Net increase (decrease) in cash and cash equivalents during the period	(640)	96
Cash and cash equivalents at beginning of the period	6,246	8,069
Cash and cash equivalents at end of the period	5,606	8,165
Investing and Financing Activities Not Affecting Cash:
Property and equipment acquired through the issuance of debt	136	64
United Airlines Inc [Member]
Cash Flows from Operating Activities:
Net loss	(423)	(160)
Adjustments to reconcile net loss to net cash provided (used) by operating activities -
Increase in advance ticket sales	1,759	736
Decrease in other liabilities	(256)	(119)
Increase in receivables	(805)	(159)
Depreciation and amortization	231	227
Increase in other current assets	(157)	(60)
Increase in accounts payable	281	148
Increase (decrease) in frequent flyer deferred revenue and advanced purchase of miles	(98)	(41)
Debt and lease discount amortization	9	22
Special charges, non-cash portion		6
Increase in receivables from related parties	(427)	(20)
Increase (decrease) in fuel hedge collateral	(1)	178
Increase (decrease) in payables to related parties	41	(2)
Other, net	14	30
Net cash provided by operating activities	168	786
Cash Flows from Investing Activities:
Capital expenditures	(113)	(125)
Increase in short-term and other investments, net	(59)	2
Proceeds from sale of property and equipment	56	1
Aircraft purchase deposits paid, net	(3)	(3)
(Increase) decrease in restricted cash, net	(2)	(10)
Net cash used in investing activities	(121)	(135)
Cash Flows from Financing Activities:
Payments of long-term debt	(147)	(397)
Principal payments under capital leases	(23)	(125)
Other, net	3	12
Net cash used in financing activities	(167)	(510)
Net increase (decrease) in cash and cash equivalents during the period	(120)	141
Cash and cash equivalents at beginning of the period	3,458	4,665
Cash and cash equivalents at end of the period	3,338	4,806
Investing and Financing Activities Not Affecting Cash:
Transfer of frequent flyer liability and advanced purchase of miles from subsidiary	2,387
Continental Airlines Inc [Member]
Cash Flows from Operating Activities:
Net loss	(8)	(57)
Adjustments to reconcile net loss to net cash provided (used) by operating activities -
Increase in advance ticket sales	(440)	589
Decrease in other liabilities	(207)	(127)
Increase in receivables	378	(220)
Depreciation and amortization	149	161
Increase in other current assets	(171)	(108)
Increase in accounts payable	(51)	(52)
Increase (decrease) in frequent flyer deferred revenue and advanced purchase of miles	(39)	79
Debt and lease discount amortization	(79)	(65)
Special charges, non-cash portion	11	(2)
Increase in receivables from related parties	(1)	(63)
Increase (decrease) in payables to related parties	386	79
Other, net	27	4
Net cash provided by operating activities	(45)	218
Cash Flows from Investing Activities:
Capital expenditures	(153)	(80)
Increase in short-term and other investments, net	(88)	(109)
Proceeds from sale of property and equipment	33	38
Aircraft purchase deposits paid, net	(32)	(35)
(Increase) decrease in restricted cash, net		2
Net cash used in investing activities	(240)	(184)
Cash Flows from Financing Activities:
Payments of long-term debt	(331)	(131)
Proceeds from issuance of long-term debt	86	32
Other, net	10	20
Net cash used in financing activities	(235)	(79)
Net increase (decrease) in cash and cash equivalents during the period	(520)	(45)
Cash and cash equivalents at beginning of the period	2,782	3,398
Cash and cash equivalents at end of the period	2,262	3,353
Investing and Financing Activities Not Affecting Cash:
Transfer of frequent flyer liability and advanced purchase of miles from subsidiary	2,387
Property and equipment acquired through the issuance of debt	$ 136	$ 64

Frequent Flyer And Passenger Revenue Accounting	3 Months Ended
Frequent Flyer And Passenger Revenue Accounting	Mar. 31, 2012
Frequent Flyer And Passenger Revenue Accounting	NOTE 1—FREQUENT FLYER AND PASSENGER REVENUE ACCOUNTING Frequent Flyer Awards. Effective January 1, 2012, the Company updated its estimated selling price for miles to the contractual rate at which we sell miles to our Star Alliance partners participating in reciprocal frequent flyer programs. This change in estimate has been applied prospectively effective January 1, 2012. United and Continental account for miles sold and awarded that will never be redeemed by program members, which the Company refers to as "breakage," using the redemption method. UAL reviews its breakage estimates annually based upon the latest available information regarding redemption and expiration patterns. The Company re-evaluated its population breakage estimates for OnePass miles, which were previously not subject to an expiration policy, and increased the estimate of miles in the population expected to ultimately expire. The Company's estimate of the expected expiration of miles requires significant management judgment. Current and future changes to expiration assumptions, the expiration policy, program rules or program redemption opportunities may result in material changes to the deferred revenue balance as well as recognized revenues from the programs. For the three months ended March 31, 2012, the combined net impact of these changes to UAL, United and Continental were not material.
United Airlines Inc [Member]
Frequent Flyer And Passenger Revenue Accounting	NOTE 1—FREQUENT FLYER AND PASSENGER REVENUE ACCOUNTING Frequent Flyer Awards. Effective January 1, 2012, the Company updated its estimated selling price for miles to the contractual rate at which we sell miles to our Star Alliance partners participating in reciprocal frequent flyer programs. This change in estimate has been applied prospectively effective January 1, 2012. United and Continental account for miles sold and awarded that will never be redeemed by program members, which the Company refers to as "breakage," using the redemption method. UAL reviews its breakage estimates annually based upon the latest available information regarding redemption and expiration patterns. The Company re-evaluated its population breakage estimates for OnePass miles, which were previously not subject to an expiration policy, and increased the estimate of miles in the population expected to ultimately expire. The Company's estimate of the expected expiration of miles requires significant management judgment. Current and future changes to expiration assumptions, the expiration policy, program rules or program redemption opportunities may result in material changes to the deferred revenue balance as well as recognized revenues from the programs. For the three months ended March 31, 2012, the combined net impact of these changes to UAL, United and Continental were not material.
Continental Airlines Inc [Member]
Frequent Flyer And Passenger Revenue Accounting	NOTE 1—FREQUENT FLYER AND PASSENGER REVENUE ACCOUNTING Frequent Flyer Awards. Effective January 1, 2012, the Company updated its estimated selling price for miles to the contractual rate at which we sell miles to our Star Alliance partners participating in reciprocal frequent flyer programs. This change in estimate has been applied prospectively effective January 1, 2012. United and Continental account for miles sold and awarded that will never be redeemed by program members, which the Company refers to as "breakage," using the redemption method. UAL reviews its breakage estimates annually based upon the latest available information regarding redemption and expiration patterns. The Company re-evaluated its population breakage estimates for OnePass miles, which were previously not subject to an expiration policy, and increased the estimate of miles in the population expected to ultimately expire. The Company's estimate of the expected expiration of miles requires significant management judgment. Current and future changes to expiration assumptions, the expiration policy, program rules or program redemption opportunities may result in material changes to the deferred revenue balance as well as recognized revenues from the programs. For the three months ended March 31, 2012, the combined net impact of these changes to UAL, United and Continental were not material.

New Accounting Pronouncements	3 Months Ended
New Accounting Pronouncements	Mar. 31, 2012
New Accounting Pronouncements	NOTE 2—NEW ACCOUNTING PRONOUNCEMENTS In May 2011, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update No. 2011-04 ("ASU 2011-04"), Fair Value Measurement: Amendments to Achieve Common Fair Value Measurements and Disclosure Requirements in U.S. GAAP and IFRS. Some of the key amendments to the fair value measurement guidance include the highest and best use and valuation premise for nonfinancial assets, application to financial assets and financial liabilities with offsetting positions in market risks or counterparty credit risk, premiums or discounts in fair value measurement and fair value of an instrument classified in a reporting entity's shareholders' equity. Additional disclosures for fair value measurements categorized in Level 3 of the fair value hierarchy include a quantitative disclosure of the unobservable inputs and assumptions used in the measurement, a description of the valuation processes in place, a narrative description of the sensitivity of the fair value to changes in unobservable inputs and interrelationships between those inputs and the level in the fair value hierarchy of items that are not measured at fair value in the consolidated balance sheet but whose fair value must be disclosed. ASU 2011-04 became effective for the Company's annual and interim periods beginning January 1, 2012, and the required disclosures are disclosed in Note 6 of this report.
United Airlines Inc [Member]
New Accounting Pronouncements	NOTE 2—NEW ACCOUNTING PRONOUNCEMENTS In May 2011, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update No. 2011-04 ("ASU 2011-04"), Fair Value Measurement: Amendments to Achieve Common Fair Value Measurements and Disclosure Requirements in U.S. GAAP and IFRS. Some of the key amendments to the fair value measurement guidance include the highest and best use and valuation premise for nonfinancial assets, application to financial assets and financial liabilities with offsetting positions in market risks or counterparty credit risk, premiums or discounts in fair value measurement and fair value of an instrument classified in a reporting entity's shareholders' equity. Additional disclosures for fair value measurements categorized in Level 3 of the fair value hierarchy include a quantitative disclosure of the unobservable inputs and assumptions used in the measurement, a description of the valuation processes in place, a narrative description of the sensitivity of the fair value to changes in unobservable inputs and interrelationships between those inputs and the level in the fair value hierarchy of items that are not measured at fair value in the consolidated balance sheet but whose fair value must be disclosed. ASU 2011-04 became effective for the Company's annual and interim periods beginning January 1, 2012, and the required disclosures are disclosed in Note 6 of this report.
Continental Airlines Inc [Member]
New Accounting Pronouncements	NOTE 2—NEW ACCOUNTING PRONOUNCEMENTS In May 2011, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update No. 2011-04 ("ASU 2011-04"), Fair Value Measurement: Amendments to Achieve Common Fair Value Measurements and Disclosure Requirements in U.S. GAAP and IFRS. Some of the key amendments to the fair value measurement guidance include the highest and best use and valuation premise for nonfinancial assets, application to financial assets and financial liabilities with offsetting positions in market risks or counterparty credit risk, premiums or discounts in fair value measurement and fair value of an instrument classified in a reporting entity's shareholders' equity. Additional disclosures for fair value measurements categorized in Level 3 of the fair value hierarchy include a quantitative disclosure of the unobservable inputs and assumptions used in the measurement, a description of the valuation processes in place, a narrative description of the sensitivity of the fair value to changes in unobservable inputs and interrelationships between those inputs and the level in the fair value hierarchy of items that are not measured at fair value in the consolidated balance sheet but whose fair value must be disclosed. ASU 2011-04 became effective for the Company's annual and interim periods beginning January 1, 2012, and the required disclosures are disclosed in Note 6 of this report.

Loss Per Share

3 Months Ended

Mar. 31, 2012

Loss Per Share

NOTE 3—LOSS PER SHARE

The table below represents the computation of UAL basic and diluted earnings per share amounts and the number of securities that have been excluded from the computation of diluted earnings per share amounts because they were antidilutive (in millions, except per share amounts):


	Three Months Ended March 31,
	2012			2011
UAL basic and diluted loss per share:
Loss available to common stockholders	$	(448	)	$	(213	)

Weighted average shares outstanding, basic and diluted		330			328

Loss per share, basic and diluted	$	(1.36	)	$	(0.65	)

UAL potentially dilutive shares excluded from diluted per share amounts:
Restricted stock and units and stock options		7			9
Continental 6% convertible junior subordinated debentures		4			4
UAL 6% senior convertible notes		40			40
UAL 4.5% senior limited-subordination convertible notes		5			22
Continental 4.5% convertible notes		12			12

UAL's 6% Senior Notes due 2031 (the "6% Senior Notes"), with a principal amount of $652 million as of March 31, 2012, can be redeemed, and the $125 million of UAL's 8% Contingent Senior Notes (the "8% Notes"), which UAL issued in January 2012, are redeemable with either cash or shares of UAL common stock, or in the case of mandatory redemption, a combination thereof, at UAL's option. These notes are not included in the diluted earnings per share calculation because it is UAL's intent to redeem these notes with cash if UAL were to decide to redeem these notes.

United Airlines Inc [Member]

Loss Per Share

NOTE 3--LOSS PER SHARE


	Three Months Ended March 31,
	2012			2011
UAL basic and diluted loss per share:
Loss available to common stockholders	$	(448	)	$	(213	)

Weighted average shares outstanding, basic and diluted		330			328

Loss per share, basic and diluted	$	(1.36	)	$	(0.65	)

UAL potentially dilutive shares excluded from diluted per share amounts:
Restricted stock and units and stock options		7			9
Continental 6% convertible junior subordinated debentures		4			4
UAL 6% senior convertible notes		40			40
UAL 4.5% senior limited-subordination convertible notes		5			22
Continental 4.5% convertible notes		12			12

Continental Airlines Inc [Member]

Loss Per Share

NOTE 3—LOSS PER SHARE


	Three Months Ended March 31,
	2012			2011
UAL basic and diluted loss per share:
Loss available to common stockholders	$	(448	)	$	(213	)

Weighted average shares outstanding, basic and diluted		330			328

Loss per share, basic and diluted	$	(1.36	)	$	(0.65	)

UAL potentially dilutive shares excluded from diluted per share amounts:
Restricted stock and units and stock options		7			9
Continental 6% convertible junior subordinated debentures		4			4
UAL 6% senior convertible notes		40			40
UAL 4.5% senior limited-subordination convertible notes		5			22
Continental 4.5% convertible notes		12			12

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2012
Income Taxes	NOTE 4—INCOME TAXES Our effective tax rates are lower than the federal statutory rate of 35% primarily because of the impact of changes to existing valuation allowances. We continue to provide a valuation allowance for our deferred tax assets in excess of deferred tax liabilities because we have concluded that it is more likely than not that such deferred tax assets will ultimately not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income (including the reversals of deferred tax liabilities) during the periods in which those deferred tax assets will become deductible. The Company's management assesses available positive and negative evidence regarding the realizability of its deferred tax assets, and records a valuation allowance when it is more likely than not that all or a portion of the deferred tax assets will not be realized. To form a conclusion, management considers positive evidence in the form of reversing temporary differences, projections of future taxable income and tax planning strategies, and negative evidence such as recent history of losses. Although the Company was no longer in a three-year cumulative loss position at the end of 2011, management determined that the size and frequency of financial losses in recent years and the uncertainty associated with projecting future taxable income supported the conclusion that the valuation allowance was still needed on net deferred assets. If UAL achieves significant profitability in 2012, then management will evaluate whether its recent history of profitability constitutes sufficient positive evidence to support a reversal of a portion, or all, of the remaining valuation allowance.
United Airlines Inc [Member]
Income Taxes	NOTE 4—INCOME TAXES Our effective tax rates are lower than the federal statutory rate of 35% primarily because of the impact of changes to existing valuation allowances. We continue to provide a valuation allowance for our deferred tax assets in excess of deferred tax liabilities because we have concluded that it is more likely than not that such deferred tax assets will ultimately not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income (including the reversals of deferred tax liabilities) during the periods in which those deferred tax assets will become deductible. The Company's management assesses available positive and negative evidence regarding the realizability of its deferred tax assets, and records a valuation allowance when it is more likely than not that all or a portion of the deferred tax assets will not be realized. To form a conclusion, management considers positive evidence in the form of reversing temporary differences, projections of future taxable income and tax planning strategies, and negative evidence such as recent history of losses. Although the Company was no longer in a three-year cumulative loss position at the end of 2011, management determined that the size and frequency of financial losses in recent years and the uncertainty associated with projecting future taxable income supported the conclusion that the valuation allowance was still needed on net deferred assets. If UAL achieves significant profitability in 2012, then management will evaluate whether its recent history of profitability constitutes sufficient positive evidence to support a reversal of a portion, or all, of the remaining valuation allowance.
Continental Airlines Inc [Member]
Income Taxes	NOTE 4—INCOME TAXES Our effective tax rates are lower than the federal statutory rate of 35% primarily because of the impact of changes to existing valuation allowances. We continue to provide a valuation allowance for our deferred tax assets in excess of deferred tax liabilities because we have concluded that it is more likely than not that such deferred tax assets will ultimately not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income (including the reversals of deferred tax liabilities) during the periods in which those deferred tax assets will become deductible. The Company's management assesses available positive and negative evidence regarding the realizability of its deferred tax assets, and records a valuation allowance when it is more likely than not that all or a portion of the deferred tax assets will not be realized. To form a conclusion, management considers positive evidence in the form of reversing temporary differences, projections of future taxable income and tax planning strategies, and negative evidence such as recent history of losses. Although the Company was no longer in a three-year cumulative loss position at the end of 2011, management determined that the size and frequency of financial losses in recent years and the uncertainty associated with projecting future taxable income supported the conclusion that the valuation allowance was still needed on net deferred assets. If UAL achieves significant profitability in 2012, then management will evaluate whether its recent history of profitability constitutes sufficient positive evidence to support a reversal of a portion, or all, of the remaining valuation allowance.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

+ Details

Employee Benefit Plans

3 Months Ended

Mar. 31, 2012

Employee Benefit Plans

NOTE 5—EMPLOYEE BENEFIT PLANS

Defined Benefit Pension and Other Postretirement Benefit Plans. The Company's net periodic benefit cost includes the following components (in millions):


	Pension Benefits						Other Postretirement Benefits
	Three Months Ended March 31,						Three Months Ended March 31,
	2012			2011			2012			2011
UAL
Service cost	$	25		$	21		$	13		$	12
Interest cost		46			44			31			31
Expected return on plan assets		(35	)		(34	)		(1	)		(1	)
Amortization of unrecognized (gain) loss and prior service cost		5			(5	)		(1	)		—

Net periodic benefit costs	$	41		$	26		$	42		$	42


United
Service cost	$	2		$	1		$	9		$	9
Interest cost		2			2			27			28
Expected return on plan assets		(3	)		(2	)		(1	)		(1	)
Amortization of unrecognized gain and prior service cost		—			—			(1	)		—

Net periodic benefit costs	$	1		$	1		$	34		$	36


Continental
Service cost	$	23		$	20		$	4		$	3
Interest cost		44			42			4			3
Expected return on plan assets		(32	)		(32	)		—			—
Amortization of unrecognized (gain) loss and prior service cost		5			(5	)		—			—

Net periodic benefit costs	$	40		$	25		$	8		$	6

During the three months ended March 31, 2012, Continental contributed $33 million to its tax-qualified defined benefit pension plans. Continental contributed an additional $42 million to its tax-qualified defined benefit pension plans in April 2012.

Share-Based Compensation. In February 2012, UAL granted share-based compensation awards pursuant to the United Continental Holdings, Inc. 2008 Incentive Compensation Plan. These share-based compensation awards include approximately 0.5 million shares of restricted stock and 0.6 million restricted stock units ("RSUs") that vest pro-rata over three years on the anniversary of the grant date. In addition, UAL granted 1.3 million performance-based RSUs which will vest based on UAL's return on invested capital for the three years ending December 31, 2014. If this performance condition is achieved, cash payments will be made after the end of the performance period based on the 20-day average closing price of UAL common stock immediately prior to the vesting date. The Company accounts for the RSUs as liability awards. The table below presents information related to share-based compensation (in millions):


	Three Months Ended March 31,
	2012		2011
Share-based compensation expense (a)	$	15	$	13


	March 31, 2012		December 31, 2011
Unrecognized share-based compensation expense	$	49	$	43

(a)	Includes $4 million and $3 million of expense recognized in integration-related costs for three months ended March 31, 2012 and 2011, respectively.

Profit Sharing Plans. In 2012, substantially all employees participate in profit sharing, which pays 15% of total pre-tax earnings, excluding special items and share-based compensation expense, to eligible employees when pre-tax profit, excluding special items, profit sharing expense and share-based compensation program expense, exceeds $10 million. Eligible U.S. co-workers in each participating work group receive a profit sharing payout using a formula based on the ratio of each qualified co-worker's annual eligible earnings to the eligible earnings of all qualified co-workers in all domestic workgroups. The international profit sharing plan pays eligible non-U.S. co-workers the same percentage of eligible pay that is calculated under the U.S. profit sharing plan. UAL recorded no profit sharing and related payroll tax expense in the three months ended March 31, 2012 and 2011, respectively. Profit sharing expense is recorded as a component of salaries and related costs in the consolidated statements of operations.

United Airlines Inc [Member]

Employee Benefit Plans

NOTE 5—EMPLOYEE BENEFIT PLANS

Defined Benefit Pension and Other Postretirement Benefit Plans. The Company's net periodic benefit cost includes the following components (in millions):


	Pension Benefits						Other Postretirement Benefits
	Three Months Ended March 31,						Three Months Ended March 31,
	2012			2011			2012			2011
UAL
Service cost	$	25		$	21		$	13		$	12
Interest cost		46			44			31			31
Expected return on plan assets		(35	)		(34	)		(1	)		(1	)
Amortization of unrecognized (gain) loss and prior service cost		5			(5	)		(1	)		—

Net periodic benefit costs	$	41		$	26		$	42		$	42


United
Service cost	$	2		$	1		$	9		$	9
Interest cost		2			2			27			28
Expected return on plan assets		(3	)		(2	)		(1	)		(1	)
Amortization of unrecognized gain and prior service cost		—			—			(1	)		—

Net periodic benefit costs	$	1		$	1		$	34		$	36


Continental
Service cost	$	23		$	20		$	4		$	3
Interest cost		44			42			4			3
Expected return on plan assets		(32	)		(32	)		—			—
Amortization of unrecognized (gain) loss and prior service cost		5			(5	)		—			—

Net periodic benefit costs	$	40		$	25		$	8		$	6


	Three Months Ended March 31,
	2012		2011
Share-based compensation expense (a)	$	15	$	13


	March 31, 2012		December 31, 2011
Unrecognized share-based compensation expense	$	49	$	43

(a)	Includes $4 million and $3 million of expense recognized in integration-related costs for three months ended March 31, 2012 and 2011, respectively.

Continental Airlines Inc [Member]

Employee Benefit Plans

NOTE 5—EMPLOYEE BENEFIT PLANS

Defined Benefit Pension and Other Postretirement Benefit Plans. The Company's net periodic benefit cost includes the following components (in millions):


	Pension Benefits						Other Postretirement Benefits
	Three Months Ended March 31,						Three Months Ended March 31,
	2012			2011			2012			2011
UAL
Service cost	$	25		$	21		$	13		$	12
Interest cost		46			44			31			31
Expected return on plan assets		(35	)		(34	)		(1	)		(1	)
Amortization of unrecognized (gain) loss and prior service cost		5			(5	)		(1	)		—

Net periodic benefit costs	$	41		$	26		$	42		$	42


United
Service cost	$	2		$	1		$	9		$	9
Interest cost		2			2			27			28
Expected return on plan assets		(3	)		(2	)		(1	)		(1	)
Amortization of unrecognized gain and prior service cost		—			—			(1	)		—

Net periodic benefit costs	$	1		$	1		$	34		$	36


Continental
Service cost	$	23		$	20		$	4		$	3
Interest cost		44			42			4			3
Expected return on plan assets		(32	)		(32	)		—			—
Amortization of unrecognized (gain) loss and prior service cost		5			(5	)		—			—

Net periodic benefit costs	$	40		$	25		$	8		$	6


	Three Months Ended March 31,
	2012		2011
Share-based compensation expense (a)	$	15	$	13


	March 31, 2012		December 31, 2011
Unrecognized share-based compensation expense	$	49	$	43

(a)	Includes $4 million and $3 million of expense recognized in integration-related costs for three months ended March 31, 2012 and 2011, respectively.

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph q
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 8
-Subparagraph m
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 03-2
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 30
-Paragraph 26
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS106-2
-Paragraph 20, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 7, 21, 22
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Implementation Guide (Q and A)
-Number FAS88
-Paragraph 63
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

+ Details

Financial Instruments And Fair Value Measurements

3 Months Ended

Mar. 31, 2012

Financial Instruments And Fair Value Measurements

NOTE 6—FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS

The table below presents disclosures about the financial assets and financial liabilities measured at fair value on a recurring basis in the Company's financial statements as of March 31, 2012 and December 31, 2011 (in millions):


	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total			Level 1		Level 2			Level 3
		UAL
Cash and cash equivalents	$	5,606	$	5,606	$	—	$	—	$	6,246		$	6,246	$	—		$	—
Short-term investments:
Asset-backed securities		578		—		578		—		478			—		478			—
Corporate debt		508		—		508		—		515			—		515			—
Certificates of deposit placed through an account registry service ("CDARS")		416		—		416		—		355			—		355			—
Auction rate securities		112		—		—		112		113			—		—			113
U.S. government and agency notes		24		—		24		—		22			—		22			—
Other fixed income securities		29		—		29		—		33			—		33			—
Enhanced equipment trust certificates ("EETC")		62		—		—		62		60			—		—			60
Fuel derivatives, net		206		—		206		—		73			—		73			—
Foreign currency derivatives		—		—		—		—		(1	)		—		(1	)		—
Restricted cash		571		571		—		—		569			569		—			—

		United
Cash and cash equivalents	$	3,338	$	3,338	$	—	$	—	$	3,458		$	3,458	$	—		$	—
Short-term investments:
Asset-backed securities		26		—		26		—		29			—		29			—
Corporate debt		128		—		128		—		138			—		138			—
CDARS		151		—		151		—		87			—		87			—
U.S. government and agency notes		7		—		7		—		5			—		5			—
Other fixed income securities		26		—		26		—		16			—		16			—
EETC		62		—		—		62		60			—		—			60
Fuel derivatives, net		120		—		120		—		44			—		44			—
Restricted cash		435		435		—		—		433			433		—


		Continental
Cash and cash equivalents	$	2,262		$	2,262	$	—	$	—		$	2,782		$	2,782	$	—		$	—
Short-term investments:
Asset-backed securities		552			—		552		—			449			—		449			—
Corporate debt		380			—		380		—			377			—		377			—
CDARS		265			—		265		—			268			—		268			—
Auction rate securities		112			—		—		112			113			—		—			113
U.S. government and agency notes		17			—		17		—			17			—		17			—
Other fixed income securities		3			—		3		—			17			—		17			—
Fuel derivatives, net		86			—		86		—			29			—		29			—
Foreign currency derivatives		—			—		—		—			(1	)		—		(1	)		—
Restricted cash		135			135		—		—			135			135		—			—
Convertible debt derivative asset		231			—		—		231			193			—		—			193
Convertible debt option liability		(119	)		—		—		(119	)		(95	)		—		—			(95	)

The tables below present disclosures about the activity for "Level 3" financial assets and financial liabilities for the three months ended March 31 (in millions):


	Three Months Ended March 31,
	2012						2011
	Auction Rate Securities			EETC			Auction Rate Securities		EETC
UAL (a)
Balance at January 1	$	113		$	60		$	119	$	66
Settlements		—			(2	)		—		(2	)
Reported in earnings—unrealized		(1	)		—			—		—
Reported in other comprehensive income		—			4			1		(1	)

Balance at March 31	$	112		$	62		$	120	$	63

(a)

For 2012 and 2011, United's only Level 3 recurring measurements are the above EETCs.


Continental	Three Months Ended March 31,
	2012								2011
	Auction Rate Securities			Convertible Debt Supplemental Derivative Asset (a)		Convertible Debt Conversion Option Liability (a)			Auction Rate Securities		Convertible Debt Supplemental Derivative Asset (a)			Convertible Debt Conversion Option Liability (a)
Balance at January 1	$	113		$	193	$	(95	)	$	119	$	286		$	(164	)
Sales		—			—		—			—		—			—
Gains (losses):
Reported in earnings:
Realized		—			—		—			—		—			—
Unrealized		(1	)		38		(24	)		—		(24	)		12
Reported in other comprehensive income		—			—		—			1		—			—

Balance at March 31	$	112		$	231	$	(119	)	$	120	$	262		$	(152	)

(a)

These derivatives are not designated as hedges. The Convertible Debt Supplemental Derivative Asset is classified in "Other Asset - Other, net", and the Convertible Debt Conversion Option Liability is classified in "Other liabilities and deferred credits - Other" in Continental's consolidated balance sheets. The earnings impact is classified in "Nonoperating income (expense) - Miscellaneous, net" in Continental's statements of consolidated operations.

As of March 31, 2012, Continental's auction rate securities, which had a par value of $135 million and an amortized cost basis of $111 million, were variable-rate debt instruments with contractual maturities generally greater than ten years and with interest rates that reset every 7, 28 or 35 days, depending on the terms of the particular instrument. These securities are backed by pools of student loans guaranteed by state-designated guaranty agencies and reinsured by the U.S. government. All of the auction rate securities that Continental holds are senior obligations under the applicable indentures authorizing the issuance of the securities.

As of March 31, 2012, United's EETC securities, which were repurchased in open market transactions in 2007, have an amortized cost basis of $63 million and unrealized losses of $1 million. All changes in the fair value of these investments have been classified within accumulated other comprehensive income.

Continental's debt-related derivatives presented in the table above relate to (a) supplemental indenture agreements that provide that Continental's convertible debt, which was previously convertible into shares of Continental common stock, is convertible into shares of UAL common stock upon the terms and conditions specified in the indentures, and (b) the embedded conversion options in Continental's convertible debt that are required to be separated and accounted for as though they are free-standing derivatives as a result of the Continental debt becoming convertible into the common stock of a different reporting entity. These derivatives are reported in Continental's separate financial statements and eliminated in consolidation for UAL. See the Company's 2011 Annual Report for additional information.

The table below presents the carrying values and estimated fair values of financial instruments not presented in the tables above as of March 31, 2012 and December 31, 2011 (in millions):


	March 31, 2012					December 31, 2011
		Carrying Amount		Fair Value			Carrying Amount		Fair Value
UAL debt		$	11,421	$	12,105		$	11,682	$	11,992
United debt			5,602		5,607			5,745		5,630
Continental debt			5,411		5,588			5,528		5,503


	Fair Value of Debt by Fair Value Hierarchy Level
	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
UAL debt	$	12,105	$	—	$	910	$	11,195	$	11,992	$	—	$	859	$	11,133
United debt		5,607		—		—		5,607		5,630		—		—		5,630
Continental debt		5,588		—		—		5,588		5,503		—		—		5,503

Quantitative Information About Level 3 Fair Value Measurements as of March 31, 2012 ($ in millions)


Item	Fair Value at March 31, 2012		Valuation Technique	Unobservable Input	Range (Weighted Average)
Auction rate securities	$	112	Discounted Cash Flows	Hypothetical U.S. Treasury forward rates (a) Credit risk premium (b) Illiquidity premium (c) Expected repayments (d)	0.15% - 3.6% (2.7%) 1% 5% Begin in 2012-2013, end in 2013-2035

EETC	$	62	Discounted Cash Flows	Structure credit risk (e)	5% - 8% (6%)

Convertible debt derivative asset	$	231	Binomial Lattice Model	Expected volatility (f) Own credit risk (g)	45% - 60% (48%) 7% - 9% (8%)

Convertible debt option liability	$	119	Binomial Lattice Model	Expected volatility (f) Own credit risk (g)	45% - 60% (49%) 7% - 9% (8%)

(a)	Represents amounts used to determine base component of future interest rate sets that the Company has determined market participants would use in pricing the investments.

(b)	Represents the credit risk premium component of the discount rate that the Company has determined market participants would use in pricing the investments.

(c)	Represents the illiquidity premium component of the discount rate that the Company has determined market participants would use in pricing the investments.

(d)	Represents the estimated timing of principal repayments used in the discounted cash flow model.

(e)	Represents the credit risk premium of the EETC structure above the risk-free rate that the Company has determined market participants would use in pricing the instruments.

(f)	Represents the range in volatility estimates that the Company has determined market participants would use when pricing the instruments.

(g)	Represents the range of Company-specific risk adjustments that the Company has determined market participants would use as a model input.

Valuation Processes—Level 3 Measurements—The Company's internal valuation group is responsible for determining the fair value of financial instruments. Depending on the instrument, the valuation group utilizes discounted cash flow methods or option pricing methods as indicated above. Valuations using discounted cash flow methods are generally conducted by the valuation group. Valuations using option pricing models are generally provided to the Company by third-party valuation experts. Each reporting period, the valuation group reviews the unobservable inputs used by third-party valuation experts for reasonableness utilizing relevant information available to the Company from other published sources. The Company has a formal process to review changes in fair value for satisfactory explanation.

Sensitivity Analysis—Level 3 Measurements—Changes in the unobservable input values would be unlikely to cause material changes in the fair value of the auction rate securities and EETCs.

The significant unobservable inputs used in the fair value measurement of the Continental convertible debt derivative assets and liabilities are the UAL stock expected volatility and the Company's own credit risk. Significant increases (decreases) in expected volatility would result in a higher (lower) fair value measurement. Significant increases (decreases) in the Company's own credit risk would result in a lower (higher) fair value measurement. A change in one of the inputs would not necessarily result in a directionally similar change in the other.

Fair value of the financial instruments included in the tables above was determined as follows:


Description		Fair Value Methodology

Cash, Cash Equivalents, Short-term Investments, Investments and Restricted Cash		The carrying amounts approximate fair value because of the short-term maturity of these assets and liabilities. These assets have maturities of less than one year except for the EETCs, auction rate securities and corporate debt.

		Fair value is based on (a) the trading prices of the investment or similar instruments, (b) an income approach, which uses valuation techniques to convert future amounts into a single present amount based on current market expectations about those future amounts when observable trading prices are not available, or (c) internally-developed models of the expected future cash flows related to the securities.

Fuel Derivatives		Derivative contracts are privately negotiated contracts and are not exchange traded. Fair value measurements are estimated with option pricing models that employ observable inputs. Inputs to the valuation models include contractual terms, market prices, yield curves, fuel price curves and measures of volatility, among others.

Foreign Currency Derivatives		Fair value is determined with a formula utilizing observable inputs. Significant inputs to the valuation models include contractual terms, risk-free interest rates and forward exchange rates.

Debt		Fair values were based on either market prices or the discounted amount of future cash flows using our current incremental rate of borrowing for similar liabilities.

Convertible Debt Derivative Asset and Option Liability		The Company used a binomial lattice model to value the conversion options and the supplemental derivative assets. Significant binomial model inputs that are not objectively determinable include volatility and discount rate.

United Airlines Inc [Member]

Financial Instruments And Fair Value Measurements

NOTE 6—FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS


	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total			Level 1		Level 2			Level 3
		UAL
Cash and cash equivalents	$	5,606	$	5,606	$	—	$	—	$	6,246		$	6,246	$	—		$	—
Short-term investments:
Asset-backed securities		578		—		578		—		478			—		478			—
Corporate debt		508		—		508		—		515			—		515			—
Certificates of deposit placed through an account registry service ("CDARS")		416		—		416		—		355			—		355			—
Auction rate securities		112		—		—		112		113			—		—			113
U.S. government and agency notes		24		—		24		—		22			—		22			—
Other fixed income securities		29		—		29		—		33			—		33			—
Enhanced equipment trust certificates ("EETC")		62		—		—		62		60			—		—			60
Fuel derivatives, net		206		—		206		—		73			—		73			—
Foreign currency derivatives		—		—		—		—		(1	)		—		(1	)		—
Restricted cash		571		571		—		—		569			569		—			—

		United
Cash and cash equivalents	$	3,338	$	3,338	$	—	$	—	$	3,458		$	3,458	$	—		$	—
Short-term investments:
Asset-backed securities		26		—		26		—		29			—		29			—
Corporate debt		128		—		128		—		138			—		138			—
CDARS		151		—		151		—		87			—		87			—
U.S. government and agency notes		7		—		7		—		5			—		5			—
Other fixed income securities		26		—		26		—		16			—		16			—
EETC		62		—		—		62		60			—		—			60
Fuel derivatives, net		120		—		120		—		44			—		44			—
Restricted cash		435		435		—		—		433			433		—


		Continental
Cash and cash equivalents	$	2,262		$	2,262	$	—	$	—		$	2,782		$	2,782	$	—		$	—
Short-term investments:
Asset-backed securities		552			—		552		—			449			—		449			—
Corporate debt		380			—		380		—			377			—		377			—
CDARS		265			—		265		—			268			—		268			—
Auction rate securities		112			—		—		112			113			—		—			113
U.S. government and agency notes		17			—		17		—			17			—		17			—
Other fixed income securities		3			—		3		—			17			—		17			—
Fuel derivatives, net		86			—		86		—			29			—		29			—
Foreign currency derivatives		—			—		—		—			(1	)		—		(1	)		—
Restricted cash		135			135		—		—			135			135		—			—
Convertible debt derivative asset		231			—		—		231			193			—		—			193
Convertible debt option liability		(119	)		—		—		(119	)		(95	)		—		—			(95	)

The tables below present disclosures about the activity for "Level 3" financial assets and financial liabilities for the three months ended March 31 (in millions):


	Three Months Ended March 31,
	2012						2011
	Auction Rate Securities			EETC			Auction Rate Securities		EETC
UAL (a)
Balance at January 1	$	113		$	60		$	119	$	66
Settlements		—			(2	)		—		(2	)
Reported in earnings—unrealized		(1	)		—			—		—
Reported in other comprehensive income		—			4			1		(1	)

Balance at March 31	$	112		$	62		$	120	$	63

(a)

For 2012 and 2011, United's only Level 3 recurring measurements are the above EETCs.


Continental	Three Months Ended March 31,
	2012								2011
	Auction Rate Securities			Convertible Debt Supplemental Derivative Asset (a)		Convertible Debt Conversion Option Liability (a)			Auction Rate Securities		Convertible Debt Supplemental Derivative Asset (a)			Convertible Debt Conversion Option Liability (a)
Balance at January 1	$	113		$	193	$	(95	)	$	119	$	286		$	(164	)
Sales		—			—		—			—		—			—
Gains (losses):
Reported in earnings:
Realized		—			—		—			—		—			—
Unrealized		(1	)		38		(24	)		—		(24	)		12
Reported in other comprehensive income		—			—		—			1		—			—

Balance at March 31	$	112		$	231	$	(119	)	$	120	$	262		$	(152	)

(a)

The table below presents the carrying values and estimated fair values of financial instruments not presented in the tables above as of March 31, 2012 and December 31, 2011 (in millions):


	March 31, 2012				December 31, 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
UAL debt	$	11,421	$	12,105	$	11,682	$	11,992
United debt		5,602		5,607		5,745		5,630
Continental debt		5,411		5,588		5,528		5,503


	Fair Value of Debt by Fair Value Hierarchy Level
	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
UAL debt	$	12,105	$	—	$	910	$	11,195	$	11,992	$	—	$	859	$	11,133
United debt		5,607		—		—		5,607		5,630		—		—		5,630
Continental debt		5,588		—		—		5,588		5,503		—		—		5,503

Quantitative Information About Level 3 Fair Value Measurements as of March 31, 2012 ($ in millions)


Item	Fair Value at March 31, 2012		Valuation Technique	Unobservable Input	Range (Weighted Average)
Auction rate securities	$	112	Discounted Cash Flows	Hypothetical U.S. Treasury forward rates (a) Credit risk premium (b) Illiquidity premium (c) Expected repayments (d)	0.15% - 3.6% (2.7%) 1% 5% Begin in 2012-2013, end in 2013-2035

EETC	$	62	Discounted Cash Flows	Structure credit risk (e)	5% - 8% (6%)

Convertible debt derivative asset	$	231	Binomial Lattice Model	Expected volatility (f) Own credit risk (g)	45% - 60% (48%) 7% - 9% (8%)

Convertible debt option liability	$	119	Binomial Lattice Model	Expected volatility (f) Own credit risk (g)	45% - 60% (49%) 7% - 9% (8%)

(a)	Represents amounts used to determine base component of future interest rate sets that the Company has determined market participants would use in pricing the investments.

(b)	Represents the credit risk premium component of the discount rate that the Company has determined market participants would use in pricing the investments.

(c)	Represents the illiquidity premium component of the discount rate that the Company has determined market participants would use in pricing the investments.

(d)	Represents the estimated timing of principal repayments used in the discounted cash flow model.

(e)	Represents the credit risk premium of the EETC structure above the risk-free rate that the Company has determined market participants would use in pricing the instruments.

(f)	Represents the range in volatility estimates that the Company has determined market participants would use when pricing the instruments.

(g)	Represents the range of Company-specific risk adjustments that the Company has determined market participants would use as a model input.

Sensitivity Analysis—Level 3 Measurements—Changes in the unobservable input values would be unlikely to cause material changes in the fair value of the auction rate securities and EETCs.

Fair value of the financial instruments included in the tables above was determined as follows:


Description		Fair Value Methodology

Cash, Cash Equivalents, Short-term Investments, Investments and Restricted Cash		The carrying amounts approximate fair value because of the short-term maturity of these assets and liabilities. These assets have maturities of less than one year except for the EETCs, auction rate securities and corporate debt.

		Fair value is based on (a) the trading prices of the investment or similar instruments, (b) an income approach, which uses valuation techniques to convert future amounts into a single present amount based on current market expectations about those future amounts when observable trading prices are not available, or (c) internally-developed models of the expected future cash flows related to the securities.

Fuel Derivatives		Derivative contracts are privately negotiated contracts and are not exchange traded. Fair value measurements are estimated with option pricing models that employ observable inputs. Inputs to the valuation models include contractual terms, market prices, yield curves, fuel price curves and measures of volatility, among others.

Foreign Currency Derivatives		Fair value is determined with a formula utilizing observable inputs. Significant inputs to the valuation models include contractual terms, risk-free interest rates and forward exchange rates.

Debt		Fair values were based on either market prices or the discounted amount of future cash flows using our current incremental rate of borrowing for similar liabilities.

Convertible Debt Derivative Asset and Option Liability		The Company used a binomial lattice model to value the conversion options and the supplemental derivative assets. Significant binomial model inputs that are not objectively determinable include volatility and discount rate.

Continental Airlines Inc [Member]

Financial Instruments And Fair Value Measurements

NOTE 6—FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS


	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total			Level 1		Level 2			Level 3
		UAL
Cash and cash equivalents	$	5,606	$	5,606	$	—	$	—	$	6,246		$	6,246	$	—		$	—
Short-term investments:
Asset-backed securities		578		—		578		—		478			—		478			—
Corporate debt		508		—		508		—		515			—		515			—
Certificates of deposit placed through an account registry service ("CDARS")		416		—		416		—		355			—		355			—
Auction rate securities		112		—		—		112		113			—		—			113
U.S. government and agency notes		24		—		24		—		22			—		22			—
Other fixed income securities		29		—		29		—		33			—		33			—
Enhanced equipment trust certificates ("EETC")		62		—		—		62		60			—		—			60
Fuel derivatives, net		206		—		206		—		73			—		73			—
Foreign currency derivatives		—		—		—		—		(1	)		—		(1	)		—
Restricted cash		571		571		—		—		569			569		—			—

		United
Cash and cash equivalents	$	3,338	$	3,338	$	—	$	—	$	3,458		$	3,458	$	—		$	—
Short-term investments:
Asset-backed securities		26		—		26		—		29			—		29			—
Corporate debt		128		—		128		—		138			—		138			—
CDARS		151		—		151		—		87			—		87			—
U.S. government and agency notes		7		—		7		—		5			—		5			—
Other fixed income securities		26		—		26		—		16			—		16			—
EETC		62		—		—		62		60			—		—			60
Fuel derivatives, net		120		—		120		—		44			—		44			—
Restricted cash		435		435		—		—		433			433		—


		Continental
Cash and cash equivalents	$	2,262		$	2,262	$	—	$	—		$	2,782		$	2,782	$	—		$	—
Short-term investments:
Asset-backed securities		552			—		552		—			449			—		449			—
Corporate debt		380			—		380		—			377			—		377			—
CDARS		265			—		265		—			268			—		268			—
Auction rate securities		112			—		—		112			113			—		—			113
U.S. government and agency notes		17			—		17		—			17			—		17			—
Other fixed income securities		3			—		3		—			17			—		17			—
Fuel derivatives, net		86			—		86		—			29			—		29			—
Foreign currency derivatives		—			—		—		—			(1	)		—		(1	)		—
Restricted cash		135			135		—		—			135			135		—			—
Convertible debt derivative asset		231			—		—		231			193			—		—			193
Convertible debt option liability		(119	)		—		—		(119	)		(95	)		—		—			(95	)

The tables below present disclosures about the activity for "Level 3" financial assets and financial liabilities for the three months ended March 31 (in millions):


	Three Months Ended March 31,
	2012						2011
	Auction Rate Securities			EETC			Auction Rate Securities		EETC
UAL (a)
Balance at January 1	$	113		$	60		$	119	$	66
Settlements		—			(2	)		—		(2	)
Reported in earnings—unrealized		(1	)		—			—		—
Reported in other comprehensive income		—			4			1		(1	)

Balance at March 31	$	112		$	62		$	120	$	63

(a)

For 2012 and 2011, United's only Level 3 recurring measurements are the above EETCs.


Continental	Three Months Ended March 31,
	2012								2011
	Auction Rate Securities			Convertible Debt Supplemental Derivative Asset (a)		Convertible Debt Conversion Option Liability (a)			Auction Rate Securities		Convertible Debt Supplemental Derivative Asset (a)			Convertible Debt Conversion Option Liability (a)
Balance at January 1	$	113		$	193	$	(95	)	$	119	$	286		$	(164	)
Sales		—			—		—			—		—			—
Gains (losses):
Reported in earnings:
Realized		—			—		—			—		—			—
Unrealized		(1	)		38		(24	)		—		(24	)		12
Reported in other comprehensive income		—			—		—			1		—			—

Balance at March 31	$	112		$	231	$	(119	)	$	120	$	262		$	(152	)

(a)

The table below presents the carrying values and estimated fair values of financial instruments not presented in the tables above as of March 31, 2012 and December 31, 2011 (in millions):


	March 31, 2012				December 31, 2011
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
UAL debt	$	11,421	$	12,105	$	11,682	$	11,992
United debt		5,602		5,607		5,745		5,630
Continental debt		5,411		5,588		5,528		5,503


	Fair Value of Debt by Fair Value Hierarchy Level
	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
UAL debt	$	12,105	$	—	$	910	$	11,195	$	11,992	$	—	$	859	$	11,133
United debt		5,607		—		—		5,607		5,630		—		—		5,630
Continental debt		5,588		—		—		5,588		5,503		—		—		5,503

Quantitative Information About Level 3 Fair Value Measurements as of March 31, 2012 ($ in millions)


Item	Fair Value at March 31, 2012		Valuation Technique	Unobservable Input	Range (Weighted Average)
Auction rate securities	$	112	Discounted Cash Flows	Hypothetical U.S. Treasury forward rates (a) Credit risk premium (b) Illiquidity premium (c) Expected repayments (d)	0.15% - 3.6% (2.7%) 1% 5% Begin in 2012-2013, end in 2013-2035

EETC	$	62	Discounted Cash Flows	Structure credit risk (e)	5% - 8% (6%)

Convertible debt derivative asset	$	231	Binomial Lattice Model	Expected volatility (f) Own credit risk (g)	45% - 60% (48%) 7% - 9% (8%)

Convertible debt option liability	$	119	Binomial Lattice Model	Expected volatility (f) Own credit risk (g)	45% - 60% (49%) 7% - 9% (8%)

(a)	Represents amounts used to determine base component of future interest rate sets that the Company has determined market participants would use in pricing the investments.

(b)	Represents the credit risk premium component of the discount rate that the Company has determined market participants would use in pricing the investments.

(c)	Represents the illiquidity premium component of the discount rate that the Company has determined market participants would use in pricing the investments.

(d)	Represents the estimated timing of principal repayments used in the discounted cash flow model.

(e)	Represents the credit risk premium of the EETC structure above the risk-free rate that the Company has determined market participants would use in pricing the instruments.

(f)	Represents the range in volatility estimates that the Company has determined market participants would use when pricing the instruments.

(g)	Represents the range of Company-specific risk adjustments that the Company has determined market participants would use as a model input.

Sensitivity Analysis—Level 3 Measurements—Changes in the unobservable input values would be unlikely to cause material changes in the fair value of the auction rate securities and EETCs.

Fair value of the financial instruments included in the tables above was determined as follows:


Description		Fair Value Methodology

Cash, Cash Equivalents, Short-term Investments, Investments and Restricted Cash		The carrying amounts approximate fair value because of the short-term maturity of these assets and liabilities. These assets have maturities of less than one year except for the EETCs, auction rate securities and corporate debt.

		Fair value is based on (a) the trading prices of the investment or similar instruments, (b) an income approach, which uses valuation techniques to convert future amounts into a single present amount based on current market expectations about those future amounts when observable trading prices are not available, or (c) internally-developed models of the expected future cash flows related to the securities.

Fuel Derivatives		Derivative contracts are privately negotiated contracts and are not exchange traded. Fair value measurements are estimated with option pricing models that employ observable inputs. Inputs to the valuation models include contractual terms, market prices, yield curves, fuel price curves and measures of volatility, among others.

Foreign Currency Derivatives		Fair value is determined with a formula utilizing observable inputs. Significant inputs to the valuation models include contractual terms, risk-free interest rates and forward exchange rates.

Debt		Fair values were based on either market prices or the discounted amount of future cash flows using our current incremental rate of borrowing for similar liabilities.

Convertible Debt Derivative Asset and Option Liability		The Company used a binomial lattice model to value the conversion options and the supplemental derivative assets. Significant binomial model inputs that are not objectively determinable include volatility and discount rate.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44A, 44B
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Hedging Activities

3 Months Ended

Mar. 31, 2012

Hedging Activities

NOTE 7—HEDGING ACTIVITIES

Aircraft Fuel Hedges. The Company has a risk management strategy to hedge a portion of its price risk related to projected aircraft fuel requirements. The Company periodically enters into derivative contracts to mitigate the adverse financial impact of potential increases in the price of fuel. The Company does not enter into derivative instruments for speculative, non-risk management purposes.

Upon proper qualification, the Company accounts for its fuel derivative instruments as cash flow hedges. All derivatives designated as hedges that meet certain requirements are granted special hedge accounting treatment. Generally, utilizing the special hedge accounting, all periodic changes in fair value of the derivatives designated as hedges that are considered to be effective are recorded in accumulated other comprehensive income (loss) ("AOCI") until the underlying fuel is consumed and recorded in fuel expense. The Company is exposed to the risk that its hedges may not be effective in offsetting changes in the cost of fuel and that its hedges may not continue to qualify for special hedge accounting. Hedge ineffectiveness results when the change in the fair value of the derivative instrument exceeds the change in the value of the Company's expected future cash outlay to purchase and consume fuel. To the extent that the periodic changes in the fair value of the derivatives are not effective, that ineffectiveness is classified as other nonoperating income (expense).

The Company records each derivative instrument as a derivative asset or liability on a gross basis in its consolidated balance sheets and, accordingly, records any related collateral on a gross basis.

As of March 31, 2012, our projected fuel requirements for the remainder of 2012 were hedged as follows:


	Maximum Price					Minimum Price
	% of Expected Consumption			Weighted Average Price (per gallon)		% of Expected Consumption			Weighted Average Price (per gallon)
UAL (a)
Heating oil collars		15	%	$	3.27		15	%	$	2.55
Heating oil call options		4			3.20		N/A			N/A
Brent crude oil collars		9			2.74		9			1.90
Diesel fuel collars		6			3.18		6			2.39
Diesel fuel call options		1			3.17		N/A			N/A
Aircraft fuel collars		1			3.00		1			2.35

Total		36	%				31	%

(a)	As of March 31, 2012, UAL had also hedged 14% of projected first quarter 2013 fuel consumption.

The following tables present information about the financial statement classification of the Company's derivatives and related gains (losses) (in millions):


Derivatives designated as hedges		March 31, 2012						December 31, 2011
	Balance Sheet Location	UAL		United		Continental		UAL		United		Continental
Assets:
Fuel contracts due within one year	Receivables	$	206	$	120	$	86	$	77	$	48	$	29


Liabilities:
Fuel contracts due within one year	Other Current Liabilities	$	—	$	—	$	—	$	4	$	4	$	—


	Amount of Gain Recognized in AOCI on Derivatives (Effective portion)				Gain (Loss) Reclassified from AOCI into Income (Fuel Expense)					Amount of Gain Recognized in Income (Ineffective Portion)
	Three Months Ended March 31,				Three Months Ended March 31,					Three Months Ended March 31,
Fuel contracts	2012		2011		2012			2011		2012		2011
UAL	$	93	$	524	$	(31	)	$	154	$	25	$	3
United		58		385		(15	)		125		14		2
Continental		35		139		(16	)		29		11		1

Derivative Credit Risk and Fair Value

The Company is exposed to credit losses in the event of nonperformance by counterparties to its derivative instruments. While the Company records derivative instruments on a gross basis, the Company monitors its net derivative position with each counterparty to monitor credit risk. Based on the fair value of our fuel derivative instruments, our counterparties may require us to post collateral when the price of the underlying commodity decreases, and we may require our counterparties to provide us with collateral when the price of the underlying commodity increases. The following table presents information related to the Company's derivative credit risk as of March 31, 2012 (in millions):


	UAL		United		Continental
Net derivative asset with counterparties	$	206	$	120	$	86
Collateral held by the Company		1		1		—
Potential loss related to the failure of the Company's counterparties to perform		205		119		86

United Airlines Inc [Member]

Hedging Activities

NOTE 7—HEDGING ACTIVITIES

As of March 31, 2012, our projected fuel requirements for the remainder of 2012 were hedged as follows:


	Maximum Price					Minimum Price
	% of Expected Consumption			Weighted Average Price (per gallon)		% of Expected Consumption			Weighted Average Price (per gallon)
UAL (a)
Heating oil collars		15	%	$	3.27		15	%	$	2.55
Heating oil call options		4			3.20		N/A			N/A
Brent crude oil collars		9			2.74		9			1.90
Diesel fuel collars		6			3.18		6			2.39
Diesel fuel call options		1			3.17		N/A			N/A
Aircraft fuel collars		1			3.00		1			2.35

Total		36	%				31	%

(a)	As of March 31, 2012, UAL had also hedged 14% of projected first quarter 2013 fuel consumption.

The following tables present information about the financial statement classification of the Company's derivatives and related gains (losses) (in millions):


Derivatives designated as hedges		March 31, 2012						December 31, 2011
	Balance Sheet Location	UAL		United		Continental		UAL		United		Continental
Assets:
Fuel contracts due within one year	Receivables	$	206	$	120	$	86	$	77	$	48	$	29


Liabilities:
Fuel contracts due within one year	Other Current Liabilities	$	—	$	—	$	—	$	4	$	4	$	—


	Amount of Gain Recognized in AOCI on Derivatives (Effective portion)				Gain (Loss) Reclassified from AOCI into Income (Fuel Expense)					Amount of Gain Recognized in Income (Ineffective Portion)
	Three Months Ended March 31,				Three Months Ended March 31,					Three Months Ended March 31,
Fuel contracts	2012		2011		2012			2011		2012		2011
UAL	$	93	$	524	$	(31	)	$	154	$	25	$	3
United		58		385		(15	)		125		14		2
Continental		35		139		(16	)		29		11		1

Derivative Credit Risk and Fair Value


	UAL		United		Continental
Net derivative asset with counterparties	$	206	$	120	$	86
Collateral held by the Company		1		1		—
Potential loss related to the failure of the Company's counterparties to perform		205		119		86

Continental Airlines Inc [Member]

Hedging Activities

NOTE 7—HEDGING ACTIVITIES

As of March 31, 2012, our projected fuel requirements for the remainder of 2012 were hedged as follows:


	Maximum Price					Minimum Price
	% of Expected Consumption			Weighted Average Price (per gallon)		% of Expected Consumption			Weighted Average Price (per gallon)
UAL (a)
Heating oil collars		15	%	$	3.27		15	%	$	2.55
Heating oil call options		4			3.20		N/A			N/A
Brent crude oil collars		9			2.74		9			1.90
Diesel fuel collars		6			3.18		6			2.39
Diesel fuel call options		1			3.17		N/A			N/A
Aircraft fuel collars		1			3.00		1			2.35

Total		36	%				31	%

(a)	As of March 31, 2012, UAL had also hedged 14% of projected first quarter 2013 fuel consumption.

The following tables present information about the financial statement classification of the Company's derivatives and related gains (losses) (in millions):


Derivatives designated as hedges		March 31, 2012						December 31, 2011
	Balance Sheet Location	UAL		United		Continental		UAL		United		Continental
Assets:
Fuel contracts due within one year	Receivables	$	206	$	120	$	86	$	77	$	48	$	29


Liabilities:
Fuel contracts due within one year	Other Current Liabilities	$	—	$	—	$	—	$	4	$	4	$	—


	Amount of Gain Recognized in AOCI on Derivatives (Effective portion)				Gain (Loss) Reclassified from AOCI into Income (Fuel Expense)					Amount of Gain Recognized in Income (Ineffective Portion)
	Three Months Ended March 31,				Three Months Ended March 31,					Three Months Ended March 31,
Fuel contracts	2012		2011		2012			2011		2012		2011
UAL	$	93	$	524	$	(31	)	$	154	$	25	$	3
United		58		385		(15	)		125		14		2
Continental		35		139		(16	)		29		11		1

Derivative Credit Risk and Fair Value


	UAL		United		Continental
Net derivative asset with counterparties	$	206	$	120	$	86
Collateral held by the Company		1		1		—
Potential loss related to the failure of the Company's counterparties to perform		205		119		86

- Definition

The entire disclosure for the entity's entire derivative instruments and hedging activities. Describes an entity's risk management strategies, derivatives in hedging activities and non-hedging derivative instruments, the assets, obligations, liabilities, revenues and expenses arising therefrom, and the amounts of and methodologies and assumptions used in determining the amounts of such items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 45
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Commitments And Contingencies

3 Months Ended

Mar. 31, 2012

Commitments And Contingencies

NOTE 8—COMMITMENTS AND CONTINGENCIES

General Guarantees and Indemnifications. In the normal course of business, the Company enters into numerous real estate leasing and aircraft financing arrangements that have various guarantees included in the contracts. These guarantees are primarily in the form of indemnities under which the Company typically indemnifies the lessors and any tax/financing parties against tort liabilities that arise out of the use, occupancy, operation or maintenance of the leased premises or financed aircraft. Currently, the Company believes that any future payments required under these guarantees or indemnities would be immaterial, as most tort liabilities and related indemnities are covered by insurance (subject to deductibles). Additionally, certain leased premises such as fueling stations or storage facilities include indemnities of such parties for any environmental liability that may arise out of or relate to the use of the leased premises.

Legal and Environmental Contingencies. The Company has certain contingencies resulting from litigation and claims incident to the ordinary course of business. Management believes, after considering a number of factors, including (but not limited to) the information currently available, the views of legal counsel, the nature of contingencies to which the Company is subject and prior experience, that the ultimate disposition of these contingencies will not materially affect the Company's consolidated financial position or results of operations.

The Company records liabilities for legal and environmental claims when a loss is probable and reasonably estimable. These amounts are recorded based on the Company's assessments of the likelihood of their eventual disposition.

Commitments. The table below summarizes the Company's commitments as of March 31, 2012, which primarily relate to the acquisition of aircraft and related spare engines, aircraft improvements and include other commitments primarily to acquire information technology services and assets (in millions):


	UAL		United		Continental
2012	$	1,383	$	84	$	1,299
2013		983		63		920
2014		1,030		103		927
2015		1,747		373		1,374
2016		1,724		1,137		587
After 2016		5,671		5,671		—

	$	12,538	$	7,431	$	5,107

United Aircraft Commitments. As of March 31, 2012, United had firm commitments to purchase 50 new aircraft (25 Boeing 787 aircraft and 25 Airbus A350XWB aircraft) scheduled for delivery from 2016 through 2019. United also has options to purchase 42 Airbus A319 and A320 aircraft, and purchase rights for 50 Boeing 787 aircraft and 50 Airbus A350XWB aircraft.

United has secured considerable backstop financing commitments from its aircraft and engine manufacturers, subject to certain customary conditions. However, United can provide no assurance that backstop financing, or any other financing not already in place, for aircraft and engine deliveries will be available to United on acceptable terms when necessary or at all.

Continental Aircraft Commitments. As of March 31, 2012, Continental had firm commitments to purchase 78 new aircraft (53 Boeing 737 aircraft and 25 Boeing 787 aircraft) scheduled for delivery from 2012 through 2016. From April 1, 2012 through December 31, 2012, Continental expects to take delivery of 15 Boeing 737-900ER aircraft and five Boeing 787-8 aircraft.

Continental has arranged for financing of eleven Boeing 737-900ER aircraft and four Boeing 787-8 aircraft scheduled for delivery from April 2012 through December 2012. See "Note 9—Debt—Continental EETCs" of this report for additional information.

However, Continental does not have backstop financing or any other financing currently in place for the other Boeing aircraft on order. Financing will be necessary to satisfy Continental's capital commitments for its firm order aircraft and other related capital expenditures. Continental can provide no assurance that backstop financing, or any other financing not already in place, for aircraft and engine deliveries will be available to Continental on acceptable terms when necessary or at all.

The Company is currently in discussions with Boeing over potential compensation related to delays in the 787 aircraft deliveries. The Company is not able to estimate the ultimate success, amount of, nature or timing of any potential recoveries from Boeing over such delays.

Credit Card Processing Agreements. United and Continental have agreements with financial institutions that process customer credit card transactions for the sale of air travel and other services. Under certain of United's and Continental's credit card processing agreements, the financial institutions either require, or under certain circumstances have the right to require, that United and Continental maintain a reserve equal to a portion of advance ticket sales that have been processed by that financial institution, but for which United and Continental have not yet provided the air transportation.

As of March 31, 2012, United and Continental provided a reserve of $25 million, as required under their combined credit card processing agreement with JPMorgan Chase Bank, N.A. and Paymentech, LLC. Additional reserves may be required under this or other credit card processing agreements of United or Continental if the amount of unrestricted cash, cash equivalents, short-term investments and undrawn amounts under any revolving credit facilities held by United and Continental is less than $3.5 billion as of any calendar month-end measurement date. In addition, in certain circumstances, an increase in the future reserve requirements and the posting of a significant amount of cash collateral as provided by the terms of any or all of United's and Continental's material credit card processing agreements could materially reduce the Company's liquidity.

Guarantees and Off-Balance Sheet Financing.

Guarantees. United and Continental are the guarantors of approximately $270 million and $1.7 billion, respectively, in aggregate principal amount of tax-exempt special facilities revenue bonds and interest thereon. These bonds, issued by various airport municipalities, are payable solely from rentals paid under long-term agreements with the respective governing bodies. The leasing arrangements associated with $1.8 billion ($270 million for United and $1.5 billion for Continental) of these obligations are accounted for as operating leases with the associated expense recorded on a straight-line basis resulting in ratable accrual of the lease obligation over the expected lease term. The leasing arrangements associated with $190 million (for Continental only) of these obligations are accounted for as capital leases. These bonds are due between 2015 and 2033.

In the Company's financing transactions that include loans, the Company typically agrees to reimburse lenders for any reduced returns with respect to the loans due to any change in capital requirements and, in the case of loans in which the interest rate is based on the London Interbank Offered Rate ("LIBOR"), for certain other increased costs that the lenders incur in carrying these loans as a result of any change in law, subject in most cases to obligations of the lenders to take certain limited steps to mitigate the requirement for, or the amount of, such increased costs. At March 31, 2012, UAL had $2.7 billion of floating rate debt (consisting of United's $2.0 billion and Continental's $742 million of debt) and $385 million of fixed rate debt (consisting of United's $200 million and Continental's $185 million of debt), with remaining terms of up to ten years, that are subject to these increased cost provisions. In several financing transactions involving loans or leases from non-U.S. entities, with remaining terms of up to ten years and an aggregate balance of $3.0 billion (consisting of United's $2.2 billion and Continental's $840 million balance), the Company bears the risk of any change in tax laws that would subject loan or lease payments thereunder to non-U.S. entities to withholding taxes, subject to customary exclusions.

Houston Bush Terminal B Redevelopment Project. In May 2011, UAL, in partnership with the Houston Airport System, announced that it would begin construction of the first phase of a three-phase $1 billion terminal improvement project for Terminal B at George Bush Intercontinental Airport ("Houston Bush") by the end of 2011. In November 2011, the City of Houston issued approximately $113 million of special facilities revenue bonds to finance the construction of a new south concourse at Houston Bush dedicated to the Company's regional jet operations. The bonds are guaranteed by Continental and are payable from certain rentals paid by Continental under a special facilities lease agreement with the City of Houston. Continental's initial commitment is to construct the first phase of the currently anticipated three-phase project. Continental's cost of construction of phase one of the project is currently estimated to be approximately $100 million and is funded by special facilities revenue bonds. Construction of the remaining phases of the project will be based on demand over the next seven to 10 years, with phase one currently expected to be completed in late 2013.

Based on a qualitative assessment of the Houston Bush Terminal B Redevelopment Project, due to the fact that Continental is guaranteeing the special facilities revenue bonds and the requirement that Continental fund cost overruns with no stated limits, Continental is considered the owner of the property during the construction period for accounting purposes. As a result, the construction project is being treated as a financing transaction such that the property and related financing will be included on UAL's consolidated balance sheet as an asset under operating property and equipment and as a construction obligation under other long-term liabilities.

Credit Facilities. As of March 31, 2012 the Company had its entire commitment capacity of $500 million available under the Credit and Guaranty Agreement, dated as of December 22, 2011 (the "Revolving Credit Facility") with a syndicate of banks led by Citibank N.A., as administrative agent. The Revolving Credit Facility has an expiration date of January 30, 2015.

Labor Negotiations. As of March 31, 2012, UAL and its subsidiaries had approximately 87,000 active employees, of whom approximately 80% are represented by various U.S. labor organizations. On February 27, 2012, the pilots at both United and Continental agreed to an extension of their protocol for joint negotiations and continue to engage in joint bargaining with the Company. On February 28, 2012, the flight attendants at United ratified a new collective bargaining agreement and joint negotiations will begin shortly for a joint collective bargaining agreement covering both United's and Continental's flight attendant work groups. On March 7, 2012, the passenger service employees at both United and Continental voted to be represented by the International Association of Machinists and Aerospace Workers, AFL-CIO and negotiations are underway for a joint collective bargaining agreement for this employee group. We are continuing our negotiations for joint collective bargaining agreements with other work groups, including technicians, dispatchers, fleet service employees, storekeepers and various smaller groups.

As part of the recently amended collective bargaining agreement with the Association of Flight Attendants, the Company agreed to offer a voluntary program for flight attendants at United to retire early in exchange for a cash severance payment. The payments are dependent on the number of years of service each employee has accumulated. The Company is not currently able to estimate the amount of the total expense associated with the program as the deadline for volunteering is May 31, 2012.

United Airlines Inc [Member]

Commitments And Contingencies

NOTE 8—COMMITMENTS AND CONTINGENCIES


	UAL		United		Continental
2012	$	1,383	$	84	$	1,299
2013		983		63		920
2014		1,030		103		927
2015		1,747		373		1,374
2016		1,724		1,137		587
After 2016		5,671		5,671		—

	$	12,538	$	7,431	$	5,107

Guarantees and Off-Balance Sheet Financing.

Continental Airlines Inc [Member]

Commitments And Contingencies

NOTE 8—COMMITMENTS AND CONTINGENCIES


	UAL		United		Continental
2012	$	1,383	$	84	$	1,299
2013		983		63		920
2014		1,030		103		927
2015		1,747		373		1,374
2016		1,724		1,137		587
After 2016		5,671		5,671		—

	$	12,538	$	7,431	$	5,107

Guarantees and Off-Balance Sheet Financing.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

+ Details

Debt	3 Months Ended
Debt	Mar. 31, 2012
Debt	NOTE 9—DEBT As of March 31, 2012, a substantial portion of our assets are pledged as collateral for our debt. These assets principally consist of aircraft and the related spare parts and engines, route authorities and loyalty program intangible assets. As of March 31, 2012, UAL, United and Continental were in compliance with their respective debt covenants. *Continental EETCs.* In March 2012, Continental created two pass-through trusts, one of which issued $753 million aggregate principal amount of Class A pass-through certificates with a stated interest rate of 4.15% and the other of which issued $139 million aggregate principal amount of Class B pass-through certificates with a stated interest rate of 6.25%. The proceeds of the issuance of the Class A and Class B pass-through certificates, which amounted to $892 million, have been and will be used to purchase equipment notes issued by Continental. Of the $892 million in proceeds raised by the pass-through trusts, Continental received $188 million as of March 31, 2012, in exchange for Continental's issuance of an equivalent principal amount of equipment notes, which has been recorded as debt. The remaining amount is expected to be received during the last nine months of this year as aircraft are delivered to Continental and Continental issues equipment notes to the trusts. Continental records the debt obligation upon issuance of the equipment notes rather than upon the initial issuance of the pass-through certificates. The proceeds have been and are expected to be used to fund the acquisition of new aircraft, and in the case of currently owned aircraft, for general corporate purposes. The Company evaluated whether the pass-through trusts formed are variable interest entities ("VIEs") required to be consolidated by the Company under applicable accounting guidance, and determined that the pass-through trusts are VIEs. The Company determined that it does not have a variable interest in the pass-through trusts. The Company does not invest in or obtain a financial interest in the pass-through trusts. Rather, Continental has an obligation to make interest and principal payments on its equipment notes held by the pass-through trusts. The Company was not intended to have any voting or non-voting equity interest in the pass-through trusts or to absorb variability from the pass-through trusts. Based on this analysis, the Company determined that it is not required to consolidate the pass-through trusts. *8% Contingent Senior Notes.* UAL is obligated under an indenture to issue to the Pension Benefit Guaranty Corporation ("PBGC") up to $500 million aggregate principal amount of 8% Notes in up to eight equal tranches of $62.5 million if certain financial triggering events occur (with each tranche issued no later than 45 days following the end of any applicable fiscal year). During 2011, a financial triggering event under the 8% Notes indenture occurred at both June 30, 2011 and December 31, 2011 and, as a result, UAL issued two tranches of $62.5 million each of the 8% Notes in January 2012, which were recorded during 2011 at their fair value of $88 million as a component of integration costs. If a triggering event occurs as of June 30, 2012, UAL would be obligated to issue $62.5 million of the 8% Notes by February 14, 2013 and would record such obligation in the second quarter of 2012.
United Airlines Inc [Member]
Debt	NOTE 9—DEBT As of March 31, 2012, a substantial portion of our assets are pledged as collateral for our debt. These assets principally consist of aircraft and the related spare parts and engines, route authorities and loyalty program intangible assets. As of March 31, 2012, UAL, United and Continental were in compliance with their respective debt covenants. *Continental EETCs.* In March 2012, Continental created two pass-through trusts, one of which issued $753 million aggregate principal amount of Class A pass-through certificates with a stated interest rate of 4.15% and the other of which issued $139 million aggregate principal amount of Class B pass-through certificates with a stated interest rate of 6.25%. The proceeds of the issuance of the Class A and Class B pass-through certificates, which amounted to $892 million, have been and will be used to purchase equipment notes issued by Continental. Of the $892 million in proceeds raised by the pass-through trusts, Continental received $188 million as of March 31, 2012, in exchange for Continental's issuance of an equivalent principal amount of equipment notes, which has been recorded as debt. The remaining amount is expected to be received during the last nine months of this year as aircraft are delivered to Continental and Continental issues equipment notes to the trusts. Continental records the debt obligation upon issuance of the equipment notes rather than upon the initial issuance of the pass-through certificates. The proceeds have been and are expected to be used to fund the acquisition of new aircraft, and in the case of currently owned aircraft, for general corporate purposes. The Company evaluated whether the pass-through trusts formed are variable interest entities ("VIEs") required to be consolidated by the Company under applicable accounting guidance, and determined that the pass-through trusts are VIEs. The Company determined that it does not have a variable interest in the pass-through trusts. The Company does not invest in or obtain a financial interest in the pass-through trusts. Rather, Continental has an obligation to make interest and principal payments on its equipment notes held by the pass-through trusts. The Company was not intended to have any voting or non-voting equity interest in the pass-through trusts or to absorb variability from the pass-through trusts. Based on this analysis, the Company determined that it is not required to consolidate the pass-through trusts. *8% Contingent Senior Notes.* UAL is obligated under an indenture to issue to the Pension Benefit Guaranty Corporation ("PBGC") up to $500 million aggregate principal amount of 8% Notes in up to eight equal tranches of $62.5 million if certain financial triggering events occur (with each tranche issued no later than 45 days following the end of any applicable fiscal year). During 2011, a financial triggering event under the 8% Notes indenture occurred at both June 30, 2011 and December 31, 2011 and, as a result, UAL issued two tranches of $62.5 million each of the 8% Notes in January 2012, which were recorded during 2011 at their fair value of $88 million as a component of integration costs. If a triggering event occurs as of June 30, 2012, UAL would be obligated to issue $62.5 million of the 8% Notes by February 14, 2013 and would record such obligation in the second quarter of 2012.
Continental Airlines Inc [Member]
Debt	NOTE 9—DEBT As of March 31, 2012, a substantial portion of our assets are pledged as collateral for our debt. These assets principally consist of aircraft and the related spare parts and engines, route authorities and loyalty program intangible assets. As of March 31, 2012, UAL, United and Continental were in compliance with their respective debt covenants. *Continental EETCs.* In March 2012, Continental created two pass-through trusts, one of which issued $753 million aggregate principal amount of Class A pass-through certificates with a stated interest rate of 4.15% and the other of which issued $139 million aggregate principal amount of Class B pass-through certificates with a stated interest rate of 6.25%. The proceeds of the issuance of the Class A and Class B pass-through certificates, which amounted to $892 million, have been and will be used to purchase equipment notes issued by Continental. Of the $892 million in proceeds raised by the pass-through trusts, Continental received $188 million as of March 31, 2012, in exchange for Continental's issuance of an equivalent principal amount of equipment notes, which has been recorded as debt. The remaining amount is expected to be received during the last nine months of this year as aircraft are delivered to Continental and Continental issues equipment notes to the trusts. Continental records the debt obligation upon issuance of the equipment notes rather than upon the initial issuance of the pass-through certificates. The proceeds have been and are expected to be used to fund the acquisition of new aircraft, and in the case of currently owned aircraft, for general corporate purposes. The Company evaluated whether the pass-through trusts formed are variable interest entities ("VIEs") required to be consolidated by the Company under applicable accounting guidance, and determined that the pass-through trusts are VIEs. The Company determined that it does not have a variable interest in the pass-through trusts. The Company does not invest in or obtain a financial interest in the pass-through trusts. Rather, Continental has an obligation to make interest and principal payments on its equipment notes held by the pass-through trusts. The Company was not intended to have any voting or non-voting equity interest in the pass-through trusts or to absorb variability from the pass-through trusts. Based on this analysis, the Company determined that it is not required to consolidate the pass-through trusts. *8% Contingent Senior Notes.* UAL is obligated under an indenture to issue to the Pension Benefit Guaranty Corporation ("PBGC") up to $500 million aggregate principal amount of 8% Notes in up to eight equal tranches of $62.5 million if certain financial triggering events occur (with each tranche issued no later than 45 days following the end of any applicable fiscal year). During 2011, a financial triggering event under the 8% Notes indenture occurred at both June 30, 2011 and December 31, 2011 and, as a result, UAL issued two tranches of $62.5 million each of the 8% Notes in January 2012, which were recorded during 2011 at their fair value of $88 million as a component of integration costs. If a triggering event occurs as of June 30, 2012, UAL would be obligated to issue $62.5 million of the 8% Notes by February 14, 2013 and would record such obligation in the second quarter of 2012.

Special Charges

3 Months Ended

Mar. 31, 2012

Special Charges

NOTE 10—SPECIAL CHARGES

Special Charges. For the three months ended March 31, special charges consisted of the following (in millions):


	Three Months Ended March 31,
2012	UAL			United			Continental
Integration-related costs	$	134		$	71		$	63
Voluntary severance and benefits		49			49			—
(Gains) losses on sale of assets and other special charges, net		(19	)		(24	)		5

Subtotal special charges		164			96			68
Income tax benefit		(2	)		—			(2	)

Total special charges, net of income taxes	$	162		$	96		$	66


2011	UAL			United		Continental
Integration-related costs	$	79		$	74	$	5
Gain on aircraft sales		(2	)		—		(2	)

Total	$	77		$	74	$	3

Integration-related costs include compensation costs related to systems integration and training, costs to repaint aircraft and other branding activities, costs to write-off or accelerate depreciation on systems and facilities that are no longer used or planned to be used for significantly shorter periods, relocation costs for employees and severance primarily associated with administrative headcount reductions.

During the three months ended March 31, 2012, the Company recorded $49 million of severance and benefits associated with two voluntary employee programs. In one program, approximately 400 mechanics offered to retire early in exchange for a cash severance payment that was based on the number of years of service each employee had accumulated. The other program is a voluntary company-offered leave of absence that approximately 1,800 flight attendants accepted, which allows for continued medical coverage during the leave of absence period.

In addition, the Company sold six aircraft and its interest in a crew hotel in Hawaii during the first quarter of 2012. The Company also recorded an impairment charge on an intangible asset related to take-off and landing slots to reflect the discontinuance of one of the frequencies on an international route. The Company also made adjustments to certain legal reserves.

Accruals

The accrual for severance and medical costs was $90 million, $69 million and $21 million related to UAL, United and Continental, respectively, as of March 31, 2012. In addition, the accrual balance of future lease payments on permanently grounded aircraft was $23 million for both UAL and United as of March 31, 2012.

The severance-related accrual as of March 31, 2012, which primarily relates to the integration of United and Continental, is expected to be paid during 2012. Lease payments for grounded aircraft are expected to continue through 2013.

At March 31, 2011, the accrual balance for severance and medical costs was $81 million, $45 million and $36 million, related to UAL, United and Continental, respectively. In addition, the accrual balance of future lease payments on permanently grounded aircraft was $38 million for both UAL and United as of March 31, 2011.

United Airlines Inc [Member]

Special Charges

NOTE 10—SPECIAL CHARGES

Special Charges. For the three months ended March 31, special charges consisted of the following (in millions):


	Three Months Ended March 31,
2012	UAL			United			Continental
Integration-related costs	$	134		$	71		$	63
Voluntary severance and benefits		49			49			—
(Gains) losses on sale of assets and other special charges, net		(19	)		(24	)		5

Subtotal special charges		164			96			68
Income tax benefit		(2	)		—			(2	)

Total special charges, net of income taxes	$	162		$	96		$	66


2011	UAL			United		Continental
Integration-related costs	$	79		$	74	$	5
Gain on aircraft sales		(2	)		—		(2	)

Total	$	77		$	74	$	3

Accruals

Continental Airlines Inc [Member]

Special Charges

NOTE 10—SPECIAL CHARGES

Special Charges. For the three months ended March 31, special charges consisted of the following (in millions):


	Three Months Ended March 31,
2012	UAL			United			Continental
Integration-related costs	$	134		$	71		$	63
Voluntary severance and benefits		49			49			—
(Gains) losses on sale of assets and other special charges, net		(19	)		(24	)		5

Subtotal special charges		164			96			68
Income tax benefit		(2	)		—			(2	)

Total special charges, net of income taxes	$	162		$	96		$	66


2011	UAL			United		Continental
Integration-related costs	$	79		$	74	$	5
Gain on aircraft sales		(2	)		—		(2	)

Total	$	77		$	74	$	3

Accruals

Related Party Transactions

3 Months Ended

Mar. 31, 2012

Related Party Transactions

NOTE 11—RELATED PARTY TRANSACTIONS

Intercompany transactions—United and Continental

United and Continental perform services for one another including various aircraft maintenance services and aircraft ground handling at certain airports, and they utilize one management team to oversee the sales and administrative functions of both airlines. For services provided, Continental paid United $120 million and United paid Continental $86 million during the quarter ended March 31, 2012. These payments do not include interline billings, which are common among airlines for transportation-related services. Most of these transactions are routinely settled through the clearing house, which is customarily used in the monthly settlement of such items. Transactions not settled through the clearing house are typically settled in cash on a quarterly basis. As of March 31, 2012, Continental had a net current payable of $1.5 billion to United primarily related to the transfer of the current portion of the frequent flyer liability and the cash transfer from United in conjunction with the conversion to the new passenger service system, as described below. In addition, Continental had a $1.3 billion noncurrent payable to United associated with the transfer of the long-term portion of the frequent flyer liability.

Frequent flyer program transition

In the first quarter of 2012, the Company moved to a single loyalty program. Continental's loyalty program formally ended in the first quarter of 2012, at which point United automatically enrolled OnePass members in MileagePlus and deposited into those MileagePlus accounts award miles equal to these members' OnePass award miles balance. In March 2012, the related frequent flyer deferred revenue and advance purchase of miles liabilities for Continental's OnePass program was transferred to United with a corresponding liability recorded by Continental payable to United for assuming the frequent flyer obligations. No gain or loss was incurred from the transaction as the liabilities were transferred at their respective net book value. The obligation associated with this transfer will be settled by Continental through future redemptions by MileagePlus members on Continental operated flights. The Company currently does not expect a material impact in redemptions from moving to a single loyalty program.

Passenger service system and ticket stock integration

In March 2012, Continental and United converted to a single passenger service system, allowing the Company to operate using a single reservations system, carrier code, flight schedule, website and departure control system. In conjunction with the conversion to a single passenger service system, all tickets are now sold by United. As a result, the air traffic liability of Continental will diminish as tickets previously sold by Continental are used or refunded and United's advanced ticket sales liability and associated cash receipts from the ticket sales will increase accordingly. Given the system conversion, United transferred $1 billion in cash to Continental in March 2012 as an advance against future settlements when passengers travel. Revenue will continue to be recorded by the carrier that is operating the flight.

Revenue and expense allocation

In November 2011, the Company received a single operating certificate from the Federal Aviation Administration. The Company plans to merge Continental and United into one legal entity. Once this legal merger occurs, the financial statements of United and Continental will be combined for all periods presented from the date of the merger at their historical cost, and there will no longer be a requirement to separately report the historical financial statements of Continental.

Until Continental and United are merged into one legal entity, revenue and expenses will continue to be recorded by each entity based on either specific identification of the related transaction, where applicable, or appropriate allocations based on metrics that are systematic and rational. Certain revenues and expenses that were previously recorded based on a specific identification were allocated in March 2012 in connection with the conversion to a single passenger service system. We believe the allocated amounts will generally be comparable to historical amounts. Each airline will continue to record actual expenses for aircraft that are owned or leased and passenger revenue will be determined on an actual basis for the carrier operating the flight. The table below illustrates a summary of the primary allocation metrics to be used:


Account		Allocation metric between subsidiaries

Operating revenue:

Passenger		Actual ticket revenue based on specifically identified flights operated by each carrier. Frequent flyer component of passenger revenue based on historic revenue passenger miles ("RPMs") split between carriers. Regional revenue, based on the carrier that contracted with the regional carrier

Cargo		Actual by operating carrier

Other operating		Passenger related based on passenger revenue and other based on passengers enplaned or other similar criteria

Operating expense:

Aircraft fuel		Actual by operating carrier

Salaries and related costs		Actual for operational workgroups and allocation based on historical RPMs for administrative personnel

Regional capacity purchase		Actual based on specific identification of the carrier that contracted with regional carrier for flying

Landing fees and other rent		Allocation based on passengers enplaned

Aircraft maintenance materials and outside repairs		Actual based on the aircraft maintained

Depreciation and amortization		Specific identification of carriers' operational assets (i.e. flight equipment) and intangible assets and allocation based on historical RPMs for other assets

Distribution expenses		Allocation based on passenger revenue

Aircraft rent		Actual based on specific identification of each carrier's aircraft

Special charges		Specific identification

Other operating expenses		Specific identification where applicable and allocation based on historical RPMs for other

United Airlines Inc [Member]

Related Party Transactions

NOTE 11—RELATED PARTY TRANSACTIONS

Intercompany transactions—United and Continental

Frequent flyer program transition

Passenger service system and ticket stock integration

Revenue and expense allocation


Account		Allocation metric between subsidiaries

Operating revenue:

Passenger		Actual ticket revenue based on specifically identified flights operated by each carrier. Frequent flyer component of passenger revenue based on historic revenue passenger miles ("RPMs") split between carriers. Regional revenue, based on the carrier that contracted with the regional carrier

Cargo		Actual by operating carrier

Other operating		Passenger related based on passenger revenue and other based on passengers enplaned or other similar criteria

Operating expense:

Aircraft fuel		Actual by operating carrier

Salaries and related costs		Actual for operational workgroups and allocation based on historical RPMs for administrative personnel

Regional capacity purchase		Actual based on specific identification of the carrier that contracted with regional carrier for flying

Landing fees and other rent		Allocation based on passengers enplaned

Aircraft maintenance materials and outside repairs		Actual based on the aircraft maintained

Depreciation and amortization		Specific identification of carriers' operational assets (i.e. flight equipment) and intangible assets and allocation based on historical RPMs for other assets

Distribution expenses		Allocation based on passenger revenue

Aircraft rent		Actual based on specific identification of each carrier's aircraft

Special charges		Specific identification

Other operating expenses		Specific identification where applicable and allocation based on historical RPMs for other

Continental Airlines Inc [Member]

Related Party Transactions

NOTE 11—RELATED PARTY TRANSACTIONS

Intercompany transactions—United and Continental

Frequent flyer program transition

Passenger service system and ticket stock integration

Revenue and expense allocation


Account		Allocation metric between subsidiaries

Operating revenue:

Passenger		Actual ticket revenue based on specifically identified flights operated by each carrier. Frequent flyer component of passenger revenue based on historic revenue passenger miles ("RPMs") split between carriers. Regional revenue, based on the carrier that contracted with the regional carrier

Cargo		Actual by operating carrier

Other operating		Passenger related based on passenger revenue and other based on passengers enplaned or other similar criteria

Operating expense:

Aircraft fuel		Actual by operating carrier

Salaries and related costs		Actual for operational workgroups and allocation based on historical RPMs for administrative personnel

Regional capacity purchase		Actual based on specific identification of the carrier that contracted with regional carrier for flying

Landing fees and other rent		Allocation based on passengers enplaned

Aircraft maintenance materials and outside repairs		Actual based on the aircraft maintained

Depreciation and amortization		Specific identification of carriers' operational assets (i.e. flight equipment) and intangible assets and allocation based on historical RPMs for other assets

Distribution expenses		Allocation based on passenger revenue

Aircraft rent		Actual based on specific identification of each carrier's aircraft

Special charges		Specific identification

Other operating expenses		Specific identification where applicable and allocation based on historical RPMs for other

- Definition

The entire disclosure for related party transactions, including the nature of the relationship(s), a description of the transactions, the amount of the transactions, the effects of any change in the method of establishing the terms of the transaction from the previous period, stated interest rate, expiration date, terms and manner of settlement per the agreement with the related party, and amounts due to or from related parties. If the entity and one or more other entities are under common ownership or management control and this control affects the operating results or financial position, disclosure includes the nature of the control relationship even if there are no transactions between the entities. Disclosure may also include the aggregate amount of current and deferred tax expense for each statement of earnings presented where the entity is a member of a group that files a consolidated tax return, the amount of any tax related balances due to or from affiliates as of the date of each statement of financial position presented, the principal provisions of the method by which the consolidated amount of current and deferred tax expense is allocated to the members of the group and the nature and effect of any changes in that method. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 4
-Section 08
-Paragraph k

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 3A
-Section 04
-Paragraph b

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
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-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864

Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
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-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864

+ Details

Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2012

Loss Per Share [Abstract]

Computation Of Earnings Per Share


	Three Months Ended March 31,
	2012			2011
UAL basic and diluted loss per share:
Loss available to common stockholders	$	(448	)	$	(213	)

Weighted average shares outstanding, basic and diluted		330			328

Loss per share, basic and diluted	$	(1.36	)	$	(0.65	)

UAL potentially dilutive shares excluded from diluted per share amounts:
Restricted stock and units and stock options		7			9
Continental 6% convertible junior subordinated debentures		4			4
UAL 6% senior convertible notes		40			40
UAL 4.5% senior limited-subordination convertible notes		5			22
Continental 4.5% convertible notes		12			12

Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Employee Benefit Plans [Abstract]

Components Of Net Periodic Benefit Cost


	Pension Benefits						Other Postretirement Benefits
	Three Months Ended March 31,						Three Months Ended March 31,
	2012			2011			2012			2011
UAL
Service cost	$	25		$	21		$	13		$	12
Interest cost		46			44			31			31
Expected return on plan assets		(35	)		(34	)		(1	)		(1	)
Amortization of unrecognized (gain) loss and prior service cost		5			(5	)		(1	)		—

Net periodic benefit costs	$	41		$	26		$	42		$	42


United
Service cost	$	2		$	1		$	9		$	9
Interest cost		2			2			27			28
Expected return on plan assets		(3	)		(2	)		(1	)		(1	)
Amortization of unrecognized gain and prior service cost		—			—			(1	)		—

Net periodic benefit costs	$	1		$	1		$	34		$	36


Continental
Service cost	$	23		$	20		$	4		$	3
Interest cost		44			42			4			3
Expected return on plan assets		(32	)		(32	)		—			—
Amortization of unrecognized (gain) loss and prior service cost		5			(5	)		—			—

Net periodic benefit costs	$	40		$	25		$	8		$	6

Share-Based Compensation Expense


	Three Months Ended March 31,
	2012		2011
Share-based compensation expense (a)	$	15	$	13


	March 31, 2012		December 31, 2011
Unrecognized share-based compensation expense	$	49	$	43

(a)	Includes $4 million and $3 million of expense recognized in integration-related costs for three months ended March 31, 2012 and 2011, respectively.

- Definition

Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5, 6, 7
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 158
-Paragraph 4, 7, 16, 20, 21
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=6930749&loc=d3e4179-114921

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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-Paragraph 2
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
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-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e2439-114920

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e2417-114920

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Financial Instruments And Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2012

Fair Value Measurements [Abstract]

Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis


	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total			Level 1		Level 2			Level 3
		UAL
Cash and cash equivalents	$	5,606	$	5,606	$	—	$	—	$	6,246		$	6,246	$	—		$	—
Short-term investments:
Asset-backed securities		578		—		578		—		478			—		478			—
Corporate debt		508		—		508		—		515			—		515			—
Certificates of deposit placed through an account registry service ("CDARS")		416		—		416		—		355			—		355			—
Auction rate securities		112		—		—		112		113			—		—			113
U.S. government and agency notes		24		—		24		—		22			—		22			—
Other fixed income securities		29		—		29		—		33			—		33			—
Enhanced equipment trust certificates ("EETC")		62		—		—		62		60			—		—			60
Fuel derivatives, net		206		—		206		—		73			—		73			—
Foreign currency derivatives		—		—		—		—		(1	)		—		(1	)		—
Restricted cash		571		571		—		—		569			569		—			—

		United
Cash and cash equivalents	$	3,338	$	3,338	$	—	$	—	$	3,458		$	3,458	$	—		$	—
Short-term investments:
Asset-backed securities		26		—		26		—		29			—		29			—
Corporate debt		128		—		128		—		138			—		138			—
CDARS		151		—		151		—		87			—		87			—
U.S. government and agency notes		7		—		7		—		5			—		5			—
Other fixed income securities		26		—		26		—		16			—		16			—
EETC		62		—		—		62		60			—		—			60
Fuel derivatives, net		120		—		120		—		44			—		44			—
Restricted cash		435		435		—		—		433			433		—


		Continental
Cash and cash equivalents	$	2,262		$	2,262	$	—	$	—		$	2,782		$	2,782	$	—		$	—
Short-term investments:
Asset-backed securities		552			—		552		—			449			—		449			—
Corporate debt		380			—		380		—			377			—		377			—
CDARS		265			—		265		—			268			—		268			—
Auction rate securities		112			—		—		112			113			—		—			113
U.S. government and agency notes		17			—		17		—			17			—		17			—
Other fixed income securities		3			—		3		—			17			—		17			—
Fuel derivatives, net		86			—		86		—			29			—		29			—
Foreign currency derivatives		—			—		—		—			(1	)		—		(1	)		—
Restricted cash		135			135		—		—			135			135		—			—
Convertible debt derivative asset		231			—		—		231			193			—		—			193
Convertible debt option liability		(119	)		—		—		(119	)		(95	)		—		—			(95	)

Activity For "Level Three" Financial Assets And Financial Liabilities


	Three Months Ended March 31,
	2012						2011
	Auction Rate Securities			EETC			Auction Rate Securities		EETC
UAL (a)
Balance at January 1	$	113		$	60		$	119	$	66
Settlements		—			(2	)		—		(2	)
Reported in earnings—unrealized		(1	)		—			—		—
Reported in other comprehensive income		—			4			1		(1	)

Balance at March 31	$	112		$	62		$	120	$	63

(a)

For 2012 and 2011, United's only Level 3 recurring measurements are the above EETCs.

Carrying Values And Estimated Fair Values Of Financial Instruments


	March 31, 2012					December 31, 2011
		Carrying Amount		Fair Value			Carrying Amount		Fair Value
UAL debt		$	11,421	$	12,105		$	11,682	$	11,992
United debt			5,602		5,607			5,745		5,630
Continental debt			5,411		5,588			5,528		5,503


	Fair Value of Debt by Fair Value Hierarchy Level
	March 31, 2012								December 31, 2011
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
UAL debt	$	12,105	$	—	$	910	$	11,195	$	11,992	$	—	$	859	$	11,133
United debt		5,607		—		—		5,607		5,630		—		—		5,630
Continental debt		5,588		—		—		5,588		5,503		—		—		5,503

Quantitative Information About Level 3 Fair Value Measurements


Item	Fair Value at March 31, 2012		Valuation Technique	Unobservable Input	Range (Weighted Average)
Auction rate securities	$	112	Discounted Cash Flows	Hypothetical U.S. Treasury forward rates (a) Credit risk premium (b) Illiquidity premium (c) Expected repayments (d)	0.15% - 3.6% (2.7%) 1% 5% Begin in 2012-2013, end in 2013-2035

EETC	$	62	Discounted Cash Flows	Structure credit risk (e)	5% - 8% (6%)

Convertible debt derivative asset	$	231	Binomial Lattice Model	Expected volatility (f) Own credit risk (g)	45% - 60% (48%) 7% - 9% (8%)

Convertible debt option liability	$	119	Binomial Lattice Model	Expected volatility (f) Own credit risk (g)	45% - 60% (49%) 7% - 9% (8%)

(a)	Represents amounts used to determine base component of future interest rate sets that the Company has determined market participants would use in pricing the investments.

(b)	Represents the credit risk premium component of the discount rate that the Company has determined market participants would use in pricing the investments.

(c)	Represents the illiquidity premium component of the discount rate that the Company has determined market participants would use in pricing the investments.

(d)	Represents the estimated timing of principal repayments used in the discounted cash flow model.

(e)	Represents the credit risk premium of the EETC structure above the risk-free rate that the Company has determined market participants would use in pricing the instruments.

(f)	Represents the range in volatility estimates that the Company has determined market participants would use when pricing the instruments.

(g)	Represents the range of Company-specific risk adjustments that the Company has determined market participants would use as a model input.

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References + Details

- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 14
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15
-Subparagraph b-d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph a, c(1), c(2), c(3), d
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 18
-Subparagraph c(2), d, e, f
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 19
-Subparagraph a, b, c(1), d(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
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-URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610

+ Details

Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2012

Hedging Activities [Abstract]

Schedule Of Hedging Activity For Projected Fuel Requirements


	Maximum Price					Minimum Price
	% of Expected Consumption			Weighted Average Price (per gallon)		% of Expected Consumption			Weighted Average Price (per gallon)
UAL (a)
Heating oil collars		15	%	$	3.27		15	%	$	2.55
Heating oil call options		4			3.20		N/A			N/A
Brent crude oil collars		9			2.74		9			1.90
Diesel fuel collars		6			3.18		6			2.39
Diesel fuel call options		1			3.17		N/A			N/A
Aircraft fuel collars		1			3.00		1			2.35

Total		36	%				31	%

(a)	As of March 31, 2012, UAL had also hedged 14% of projected first quarter 2013 fuel consumption.

Schedule Of Derivative Instruments


Derivatives designated as hedges		March 31, 2012						December 31, 2011
	Balance Sheet Location	UAL		United		Continental		UAL		United		Continental
Assets:
Fuel contracts due within one year	Receivables	$	206	$	120	$	86	$	77	$	48	$	29


Liabilities:
Fuel contracts due within one year	Other Current Liabilities	$	—	$	—	$	—	$	4	$	4	$	—

Schedule Of Gain Loss On Derivative Instruments


	Amount of Gain Recognized in AOCI on Derivatives (Effective portion)				Gain (Loss) Reclassified from AOCI into Income (Fuel Expense)					Amount of Gain Recognized in Income (Ineffective Portion)
	Three Months Ended March 31,				Three Months Ended March 31,					Three Months Ended March 31,
Fuel contracts	2012		2011		2012			2011		2012		2011
UAL	$	93	$	524	$	(31	)	$	154	$	25	$	3
United		58		385		(15	)		125		14		2
Continental		35		139		(16	)		29		11		1

Schedule Of Derivative Credit Risk And Fair Value


	UAL		United		Continental
Net derivative asset with counterparties	$	206	$	120	$	86
Collateral held by the Company		1		1		—
Potential loss related to the failure of the Company's counterparties to perform		205		119		86

- Definition

Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges.

+ References + Details

- Definition

Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

+ Details

Commitments And Contingencies (Tables)

3 Months Ended

Mar. 31, 2012

Commitments And Contingencies [Abstract]

Schedule Of Acquisition Of Aircrafts And Related Spare Engines


	UAL		United		Continental
2012	$	1,383	$	84	$	1,299
2013		983		63		920
2014		1,030		103		927
2015		1,747		373		1,374
2016		1,724		1,137		587
After 2016		5,671		5,671		—

	$	12,538	$	7,431	$	5,107

Special Charges (Tables)

3 Months Ended

Mar. 31, 2012

Special Charges [Abstract]

Components Of Special Charges


	Three Months Ended March 31,
2012	UAL			United			Continental
Integration-related costs	$	134		$	71		$	63
Voluntary severance and benefits		49			49			—
(Gains) losses on sale of assets and other special charges, net		(19	)		(24	)		5

Subtotal special charges		164			96			68
Income tax benefit		(2	)		—			(2	)

Total special charges, net of income taxes	$	162		$	96		$	66


2011	UAL			United		Continental
Integration-related costs	$	79		$	74	$	5
Gain on aircraft sales		(2	)		—		(2	)

Total	$	77		$	74	$	3

Related Party Transactions (Table)

3 Months Ended

Mar. 31, 2012

Primary Allocation Metrics Policies


Account		Allocation metric between subsidiaries

Operating revenue:

Passenger		Actual ticket revenue based on specifically identified flights operated by each carrier. Frequent flyer component of passenger revenue based on historic revenue passenger miles ("RPMs") split between carriers. Regional revenue, based on the carrier that contracted with the regional carrier

Cargo		Actual by operating carrier

Other operating		Passenger related based on passenger revenue and other based on passengers enplaned or other similar criteria

Operating expense:

Aircraft fuel		Actual by operating carrier

Salaries and related costs		Actual for operational workgroups and allocation based on historical RPMs for administrative personnel

Regional capacity purchase		Actual based on specific identification of the carrier that contracted with regional carrier for flying

Landing fees and other rent		Allocation based on passengers enplaned

Aircraft maintenance materials and outside repairs		Actual based on the aircraft maintained

Depreciation and amortization		Specific identification of carriers' operational assets (i.e. flight equipment) and intangible assets and allocation based on historical RPMs for other assets

Distribution expenses		Allocation based on passenger revenue

Aircraft rent		Actual based on specific identification of each carrier's aircraft

Special charges		Specific identification

Other operating expenses		Specific identification where applicable and allocation based on historical RPMs for other

Loss Per Share (Narrative) (Details)	3 Months Ended
Loss Per Share (Narrative) (Details)	Mar. 31, 2012 USD ($)
Earnings Loss Per Share [Line Items]
Debt instrument stated interest rate	8.00%
UAL 6% Senior Convertible Notes [Member]
Earnings Loss Per Share [Line Items]
Principal amount of senior notes	$ 652,000,000
Debt instrument stated interest rate	6.00%
Due date of debt instruments	2031
UAL 8% Contingent Senior Notes [Member]
Earnings Loss Per Share [Line Items]
Principal amount of senior notes	$ 125,000,000
Debt instrument stated interest rate	8.00%

Loss Per Share (Computation Of Earnings Per Share) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Earnings Loss Per Share [Line Items]
Loss available to common stockholders	$ (448)	$ (213)
Weighted average shares outstanding, basic and diluted	330,000,000	328,000,000
Loss per share, basic and diluted	(1.36)	(0.65)
Debt instrument stated interest rate	8.00%
Continental 4.5% Convertible Notes [Member]
Earnings Loss Per Share [Line Items]
Potentially dilutive shares excluded from diluted per share amounts	12,000,000	12,000,000
Debt instrument stated interest rate	4.50%
UAL 4.5% Senior Limited-Subordination Convertible Notes [Member]
Earnings Loss Per Share [Line Items]
Potentially dilutive shares excluded from diluted per share amounts	5,000,000	22,000,000
Debt instrument stated interest rate	4.50%
Continental 6% Convertible Junior Subordinated Debentures [Member]
Earnings Loss Per Share [Line Items]
Potentially dilutive shares excluded from diluted per share amounts	4,000,000	4,000,000
Debt instrument stated interest rate	6.00%
UAL 6% Senior Convertible Notes [Member]
Earnings Loss Per Share [Line Items]
Potentially dilutive shares excluded from diluted per share amounts	40,000,000	40,000,000
Debt instrument stated interest rate	6.00%
Restricted Stock And Units And Stock Options [Member]
Earnings Loss Per Share [Line Items]
Potentially dilutive shares excluded from diluted per share amounts	7,000,000	9,000,000

Income Taxes (Details)	3 Months Ended
Income Taxes (Details)	Mar. 31, 2012
Income Taxes [Abstract]
Federal statutory income tax rate	35.00%

Employee Benefit Plans (Narrative) (Details) shares in Millions, $ in Millions	1 Months Ended	3 Months Ended
	Feb. 29, 2012 shares	Mar. 31, 2012 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of days used to compute performance period average closing price of restricted stock units		20
Performance-based restricted stock shares	0.5
Restricted stock, vesting period, in years	three
Percentage of pre-tax earnings paid for profit sharing plan		15.00%
Share-based compensation program pre-tax profits excluding special items, profit sharing expense and share-based compensation program expense threshold \| $		$ 10
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based restricted stock units	0.6
Performance-Based Restricted Stock Units ("RSUs") Based On Return On Invested Capital [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based restricted stock units	1.3

Employee Benefit Plans (Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 25	$ 21
Interest cost	46	44
Expected return on plan assets	(35)	(34)
Amortization of unrecognized gain and prior service cost	5	(5)
Net periodic benefit costs	41	26
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	13	12
Interest cost	31	31
Expected return on plan assets	(1)	(1)
Amortization of unrecognized gain and prior service cost	(1)
Net periodic benefit costs	$ 42	$ 42

- Definition

An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

+ References

+ Details

- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

+ References + Details

- Definition

The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 106
-Paragraph 518
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 87
-Paragraph 264
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph a, h
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6962843&loc=d3e1928-114920

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Service Cost (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6525008

+ Details

Employee Benefit Plans (Share-Based Compensation Expense) (Details) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2012

Mar. 31, 2011

Dec. 31, 2011

Employee Benefit Plans [Abstract]

Share-based compensation expense

^[1]

$ 15

$ 13

Unrecognized share-based compensation expense

$ 43

Expense recognized in integration-related costs

$ 4

$ 3

[1]	Includes $4 million and $3 million of expense recognized in integration-related costs for three months ended March 31, 2012 and 2011, respectively.

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References + Details

Financial Instruments And Fair Value Measurements (Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions	Mar. 31, 2012	Dec. 31, 2011
Cash And Cash Equivalents [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Cash and cash equivalents	$ 5,606	$ 6,246
Cash And Cash Equivalents [Member] \| UAL [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Cash and cash equivalents	5,606	6,246
Auction Rate Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	112
Auction Rate Securities [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	112	113
Auction Rate Securities [Member] \| UAL [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	112	113
CDARS [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	416	355
CDARS [Member] \| UAL [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	416	355
Asset-Backed Securities [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	578	478
Asset-Backed Securities [Member] \| UAL [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	578	478
Corporate Debt [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	508	515
Corporate Debt [Member] \| UAL [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	508	515
U.S. Government And Agency Notes [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	24	22
U.S. Government And Agency Notes [Member] \| UAL [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	24	22
Other Fixed Income Securities [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	29	33
Other Fixed Income Securities [Member] \| UAL [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	29	33
EETC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Short-term investments	62
EETC [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
EETC	62	60
EETC [Member] \| UAL [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
EETC	62	60
Fuel Derivatives, Net [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fuel derivatives, net	206	73
Fuel Derivatives, Net [Member] \| UAL [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Fuel derivatives, net	206	73
Foreign Currency Derivatives [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Foreign currency derivatives		(1)
Foreign Currency Derivatives [Member] \| UAL [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Foreign currency derivatives		(1)
Restricted Cash [Member] \| UAL [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Restricted cash	571	569
Restricted Cash [Member] \| UAL [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis, Valuation Techniques [Line Items]
Restricted cash	$ 571	$ 569

Financial Instruments And Fair Value Measurements (Activity For "Level Three" Financial Assets And Financial Liabilities) (Details) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2012

Mar. 31, 2011

Auction Rate Securities [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Balance at January 1

^[1]

$ 113

$ 119

Reported in earnings - unrealized

^[1]

(1)

Reported in other comprehensive income

^[1]

Balance at March 31

^[1]

112

120

EETC [Member]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Balance at January 1

^[1]

Settlements

^[1]

(2)

Reported in other comprehensive income

^[1]

(1)

Balance at March 31

^[1]

$ 62

$ 63

[1]	For 2012 and 2011, United's only Level 3 recurring measurements are the above EETCs.

Financial Instruments And Fair Value Measurements (Fair Value Assets Measured On Nonrecurring Basis) (Details) - UAL [Member] - USD ($) $ in Millions	Mar. 31, 2012	Dec. 31, 2011
Carrying Amount	$ 11,421	$ 11,682
Fair Value	12,105	11,992
Level 2 [Member]
Fair Value	910	859
Level 3 [Member]
Fair Value	$ 11,195	$ 11,133

Financial Instruments And Fair Value Measurements (Quantitative Information About Level 3 Fair Value Measurements) (Details)
$ in Millions

3 Months Ended

Mar. 31, 2012

USD ($)

Auction Rate Securities [Member]

Short-term investments

$ 112

Valuation Technique(s)

Discounted Cash Flows

Unobservable Input

Hypothetical U.S. Treasury forward rates (a) Credit risk premium (b) Illiquidity premium (c) Expected repayments (d)

Level 3 fair value measurements, expected repayments, period

<div class="MetaData"> <p style="margin-top: 0px; margin-bottom: 1px;"><font style="font-family: Times New Roman;" class="_mt" size="2">Begin in 2012-2013, end in 2013-2035</font></p></div>

^[1]

EETC [Member]

Short-term investments

$ 62

Valuation Technique(s)

Discounted Cash Flows

Unobservable Input

Structure credit risk (e)

Hypothetical U.S. Treasury Forward Rates [Member] | Auction Rate Securities [Member]

Level 3 fair value measurements, weighted average percentage

2.70%

^[2]

Hypothetical U.S. Treasury Forward Rates [Member] | Maximum [Member] | Auction Rate Securities [Member]

Level 3 fair value measurements, percentage

3.60%

^[2]

Hypothetical U.S. Treasury Forward Rates [Member] | Minimum [Member] | Auction Rate Securities [Member]

Level 3 fair value measurements, percentage

0.15%

^[2]

Credit Risk Premium [Member] | Auction Rate Securities [Member]

Level 3 fair value measurements, percentage

1.00%

^[3]

Illiquidity Premium [Member] | Auction Rate Securities [Member]

Level 3 fair value measurements, percentage

5.00%

^[4]

Structure Credit Risk [Member] | EETC [Member]

Level 3 fair value measurements, weighted average percentage

6.00%

^[5]

Structure Credit Risk [Member] | Maximum [Member] | EETC [Member]

Level 3 fair value measurements, percentage

8.00%

^[5]

Structure Credit Risk [Member] | Minimum [Member] | EETC [Member]

Level 3 fair value measurements, percentage

5.00%

^[5]

[1]	Represents the estimated timing of principal repayments used in the discounted cash flow model.
[2]	Represents amounts used to determine base component of future interest rate sets that the Company has determined market participants would use in pricing the investments.
[3]	Represents the credit risk premium component of the discount rate that the Company has determined market participants would use in pricing the investments.
[4]	Represents the illiquidity premium component of the discount rate that the Company has determined market participants would use in pricing the investments.
[5]	Represents the credit risk premium of the EETC structure above the risk-free rate that the Company has determined market participants would use in pricing the instruments.

Hedging Activities (Projected Fuel Requirements) (Details)

3 Months Ended

Mar. 31, 2012

Derivative [Line Items]

Hedging percentage of fuel consumption

14.00%

Maximum [Member]

Derivative [Line Items]

Percentage of Expected Consumption

36.00%

^[1]

Maximum [Member] | Heating Oil Collars [Member]

Derivative [Line Items]

Percentage of Expected Consumption

15.00%

^[1]

Weighted Average Price (per gallon)

3.27

^[1]

Maximum [Member] | Heating Oil Call Options [Member]

Derivative [Line Items]

Percentage of Expected Consumption

4.00%

^[1]

Weighted Average Price (per gallon)

3.20

^[1]

Maximum [Member] | Brent Crude Oil Collars [Member]

Derivative [Line Items]

Percentage of Expected Consumption

9.00%

^[1]

Weighted Average Price (per gallon)

2.74

^[1]

Maximum [Member] | Diesel Fuel Collars [Member]

Derivative [Line Items]

Percentage of Expected Consumption

6.00%

^[1]

Weighted Average Price (per gallon)

3.18

^[1]

Maximum [Member] | Diesel Fuel Call Options [Member]

Derivative [Line Items]

Percentage of Expected Consumption

1.00%

^[1]

Weighted Average Price (per gallon)

3.17

^[1]

Maximum [Member] | Aircraft Fuel Collars [Member]

Derivative [Line Items]

Percentage of Expected Consumption

1.00%

^[1]

Weighted Average Price (per gallon)

3.00

^[1]

Minimum [Member]

Derivative [Line Items]

Percentage of Expected Consumption

31.00%

^[1]

Minimum [Member] | Heating Oil Collars [Member]

Derivative [Line Items]

Percentage of Expected Consumption

15.00%

^[1]

Weighted Average Price (per gallon)

2.55

^[1]

Minimum [Member] | Brent Crude Oil Collars [Member]

Derivative [Line Items]

Percentage of Expected Consumption

9.00%

^[1]

Weighted Average Price (per gallon)

1.90

^[1]

Minimum [Member] | Diesel Fuel Collars [Member]

Derivative [Line Items]

Percentage of Expected Consumption

6.00%

^[1]

Weighted Average Price (per gallon)

2.39

^[1]

Minimum [Member] | Aircraft Fuel Collars [Member]

Derivative [Line Items]

Percentage of Expected Consumption

1.00%

^[1]

Weighted Average Price (per gallon)

2.35

^[1]

[1]	As of March 31, 2012, UAL had also hedged 14% of projected first quarter 2013 fuel consumption.

Hedging Activities (Description Of Derivative Instruments) (Details) - UAL [Member] - USD ($) $ in Millions	Mar. 31, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Fuel contracts due within one year, Assets	$ 206	$ 77
Fuel contracts due within one year, Liabilities		$ 4

Hedging Activities (Schedule Of Gain Loss On Derivative Instruments) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from AOCI into Income (Fuel Expense) (Effective Portion)	$ (31)	$ 154
UAL [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	93	524
Gain (Loss) Reclassified from AOCI into Income (Fuel Expense) (Effective Portion)	(31)	154
Amount of Gain (Loss) Recognized in Income (Nonoperating Expense) (Ineffective Portion)	$ 25	$ 3

- Definition

The effective portion of gain reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References + Details

Hedging Activities (Schedule Of Derivative Credit Risk And Fair Value) (Details) - UAL [Member] $ in Millions	Mar. 31, 2012 USD ($)
Net derivative asset with counterparties	$ 206
Collateral held by the Company	1
Potential loss related to the failure of the Company's counterparties to perform	$ 205

Commitments And Contingencies (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2012 USD ($) employee yr
Commitments And Contingencies [Line Items]
Terminal improvement project amount	$ 1,000
Special facilities revenue bonds	113
Estimated construction cost	$ 100
Project demand period that determines construction of the remaining phases, minimum years \| yr	7
Project demand period that determines construction of the remaining phases, maximum years \| yr	10
Commitment capacity available	$ 500
Number of employees \| employee	87,000
Percentage of employees represented by various U.S. labor organizations	80.00%
Debt instrument, remaining terms (years) \| yr	10
Floating Rate Debt [Member]
Commitments And Contingencies [Line Items]
Debt instrument principal amount	$ 2,700
Fixed Rate Debt [Member]
Commitments And Contingencies [Line Items]
Debt instrument principal amount	385
Carrying Value Of Loans/Leases From Non-U.S. Entities [Member]
Commitments And Contingencies [Line Items]
Debt instrument principal amount	$ 3,000

Commitments And Contingencies (Schedule Of Acquisition Of Aircrafts And Related Spare Engines) (Details) - UAL [Member] $ in Millions	Mar. 31, 2012 USD ($)
2012	$ 1,383
2013	983
2014	1,030
2015	1,747
2016	1,724
After 2016	5,671
Total commitments	$ 12,538

Debt (Narrative) (Details) $ in Millions	3 Months Ended
Debt (Narrative) (Details) $ in Millions	Mar. 31, 2012 USD ($)
Debt Instrument [Line Items]
UAL's obligation to issue notes to the PBGC, principal	$ 500.0
Contingent senior notes interest rate	8.00%
Issuance Of Senior Notes Equal Tranches	$ 62.5
Number of tranches issued	2
Present Value Of Obligation Recorded As Liability	$ 88.0
Senior Notes [Member]
Debt Instrument [Line Items]
Issuance Of Senior Notes Equal Tranches	$ 62.5

Special Charges (Narrative) (Details) $ in Millions	3 Months Ended
Special Charges (Narrative) (Details) $ in Millions	Mar. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Mar. 31, 2011 USD ($)
Debt Instrument [Line Items]
Number of mechanics offering to retire early	400
Number of flight attendants voluntarily on leave	1,800
Accrual severance and medical costs	$ 1,139	$ 1,509	$ 81
Number of aircraft sold	6
Continental Airlines Inc [Member]
Debt Instrument [Line Items]
Accrual severance and medical costs	$ 350	521
UAL [Member]
Debt Instrument [Line Items]
Accrual severance and medical costs	90
United Airlines Inc [Member]
Debt Instrument [Line Items]
Accrual severance and medical costs	789	$ 988
Accrual balance of future lease	$ 23		$ 38

Special Charges (Components Of Special Charges) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income tax benefit	$ 1	$ 2
Total	164	77
UAL [Member]
Integration-related costs	134	79
Voluntary severance and benefits	49
(Gains) losses on sale of assets and other special charges, net	(19)
Subtotal special charges	164
Income tax benefit	(2)
Gain on aircraft sales		(2)
Total	162	77
United Airlines Inc [Member]
Income tax benefit	2
Total	96	74
Continental Airlines Inc [Member]
Income tax benefit	(1)	2
Total	$ 68	$ 3