Earnings Per Share (EPS Calculation) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended				9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014 Stock Compensation Plan [Member]	Sep. 30, 2013 Stock Compensation Plan [Member]	Sep. 30, 2014 Stock Compensation Plan [Member]	Sep. 30, 2013 Stock Compensation Plan [Member]	Sep. 30, 2014 Stock Compensation Awards [Member]	Sep. 30, 2013 Stock Compensation Awards [Member]	Sep. 30, 2014 Stock Compensation Awards [Member]	Sep. 30, 2013 Stock Compensation Awards [Member]	Mar. 31, 2014 Convertible Senior Notes, 7.25, Due in 2014 [Member]	Sep. 30, 2014 Convertible Senior Notes, 7.25, Due in 2014 [Member] Senior Notes [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 942		$ 289		$ 2,285		$ 167
Weighted-average shares outstanding (shares)	719,067		249,719		721,213		249,599
Basic EPS (usd per share)	$ 1.31		$ 1.16		$ 3.17		$ 0.67
Interest expense on convertible senior notes	0		7		0		22
Change in fair value of conversion feature on 7.25% convertible senior notes (a)	0	[1]	0	[1]	3	[1]	0	[1]
Net income for purposes of computing diluted EPS	942		296		2,288		189
Dilutive effect of stock awards (shares)													16,129	4,736	14,610	4,159
Assumed conversion of 7.25% convertible senior notes (shares)	0		34,581		1,277		34,581
Weighted average common shares outstanding - as adjusted (shares)	735,196		289,036		737,100		288,339
Diluted EPS (usd per share)	$ 1.28		$ 1.02		$ 3.10		$ 0.65
Stock options, SARs and RSUs because inclusion would be antidilutive (shares)									248	6,519	288	9,715
Stated interest rate percentage (percent)																	7.25%	7.25%
Increase in net income for purposes of computing diluted earnings per share					$ 3

[1] In March 2014, the Company notified the holders of US Airways Group's 7.25% convertible senior notes that it had elected to settle all future conversions solely in cash instead of shares of AAG Common Stock in accordance with the related indenture. Thus, the diluted shares include the weighted average impact of the 7.25% convertible senior notes only for the period from January 1, 2014 to March 12, 2014. In addition, under GAAP, the Company must adjust the numerator for purposes of calculating diluted earnings per share by the change in fair value of the conversion feature from March 12, 2014 to May 15, 2014, which increased GAAP net income for purposes of computing diluted earnings per share by $3 million for the nine months ended September 30, 2014.