v2.4.0.6
Document and Entity Information
6 Months Ended
Jun. 30, 2012
Jul. 15, 2012
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2012  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q2  
Trading Symbol UAL  
Entity Registrant Name United Continental Holdings, Inc.  
Entity Central Index Key 0000100517  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   332,356,058
United Airlines Inc
   
Document Information [Line Items]    
Entity Registrant Name United Air Lines, Inc.  
Entity Central Index Key 0000101001  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   205
Continental Airlines Inc
   
Document Information [Line Items]    
Entity Registrant Name Continental Airlines, Inc.  
Entity Central Index Key 0000319687  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   1,000