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Reorganization (Schedule Of Liabilities Subject To Compromise) (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Reorganizations [Abstract]    
Liabilities Subject to Compromise, Debt and Accrued Interest $ 358 $ 1,642
Aircraft lease and facility bond related obligations 3,716 1,868
Pension and postretirement benefits 1,250 0
Accounts payable and other accrued liabilities 370 438
Other 0 4
Total liabilities subject to compromise $ 5,694 $ 3,952