Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net cash provided by operating activities	$ 1,256	$ 700
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits	(1,047)	(885)
Increase in short-term investments	(294)	(226)
Decrease (increase) in restricted cash and short-term investments	88	(3)
Net proceeds from slot transaction	307	0
Proceeds from sale of property and equipment	3	26
Net cash used in investing activities	(943)	(1,088)
Cash flows from financing activities:
Payments on long-term debt and capital leases	(501)	(394)
Proceeds from issuance of long-term debt	224	161
Funds transferred to affiliates	0
Payments of employee withholding taxes on net share issuances	(84)	0
Exercise of stock options	9	0
Deferred financing costs	(7)	(17)
Sale-leaseback transactions	165	764
Net cash provided by (used in) financing activities	(194)	514
Net increase in cash	119	126
Cash at beginning of period	1,140	480
Cash at end of period	1,259	606
Non-cash investing and financing activities:
Settlement of bankruptcy settlement obligation	3,557	0
Supplemental information:
Interest paid, net of amounts capitalized	204	125
Income tax paid	3	2
AA [Member]
Net cash provided by operating activities	742	696
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits	(722)	(882)
Increase in short-term investments	183	(228)
Decrease (increase) in restricted cash and short-term investments	3	(3)
Net proceeds from slot transaction	299	0
Proceeds from sale of property and equipment	3	26
Net cash used in investing activities	(234)	(1,087)
Cash flows from financing activities:
Payments on long-term debt and capital leases	(430)	(392)
Proceeds from issuance of long-term debt	0	161
Funds transferred to affiliates	(84)	0
Payments of employee withholding taxes on net share issuances	0
Exercise of stock options	0
Deferred financing costs	(5)	(17)
Sale-leaseback transactions	165	764
Net cash provided by (used in) financing activities	(354)	516
Net increase in cash	154	125
Cash at beginning of period	829	474
Cash at end of period	983	599
Non-cash investing and financing activities:
Settlement of bankruptcy settlement obligation	3,104	0
Supplemental information:
Interest paid, net of amounts capitalized	170	125
Income tax paid	$ 2	$ 1