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Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Agreement
Dec. 31, 2012
Dec. 31, 2011
May 31, 2012
Mar. 09, 2010
Jul. 01, 2004
Commitments and Contingencies Disclosure [Abstract]            
Rent expense, net of sublease income $ 141 $ 145 $ 140      
Sublease rental income 6 5 5      
Total outstanding letters of credit 634 504        
Outstanding letters of credit 1 1        
Number of existing real estate lease agreements 2          
Real estate lease agreements, expiry date Aug. 31, 2015          
Purchase price of property on or before expiration date 28          
Residual guarantee amount 23          
Maximum amount of supplemental rent payment 5          
Aggregate residual guarantee amount 23          
Term for operating lease agreements (in years) 15 years          
Fair market value of simulator systems, Minimum 7          
Fair market value of simulator systems, Maximum 21          
Additional rent to be paid for simulator systems after expiration date 7          
Kalitta Air damages, minimum 235          
Pre-judgment interest in Kalitta Air damages, minimum 240          
Total damages sought           315
Punitive damages sought           150
Compensatory damages       $ 48.0 $ 6.7