Chapter 11 Reorganization (Schedule Of Liabilities Subject To Compromise) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Reorganizations [Abstract]
Long-term debt	$ 1,175	$ 1,198
Estimated allowed claims on aircraft lease and debt obligations and facility lease and bond obligations	4,078	3,716
Pension and postretirement benefits	1,219	1,250
Accounts payable and other accrued liabilities	387	442
Other	(12)	0
Total liabilities subject to compromise	$ 6,847	$ 6,606