Merger Agreement (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013
Business Combinations [Abstract]
Merger - Portion of Shares to US Air Stakeholders (percent)	28.00%
Merger - Portion of Shares to AMR Stakeholders (percent)	72.00%
Merger - AMR Termination Fee	$ 135
Merger - Termination Fee in Event of Breach	195
AAG Convertible Preferred Stock, Conversion Amount, Maximum	250
Merger - US Air Termination Fee	$ 55
Merger - Discount on Conversion Price of New American Stock (percent)	3.50%
Merger - Portion to Existing Stockholders (percent)	3.50%
Merger - Portion to Labor Related Claimholders (percent)	23.60%