Merger Agreement (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2013
Merger agreement [Line Items]
Merger - Portion of Shares to US Air Stakeholders	28.00%
Merger - Portion of Shares to AMR Stakeholders	72.00%
Merger - AMR Termination Fee	$ 135
Merger - Termination Fee in Event of Breach	195
Merger - US Air Termination Fee	$ 55
Merger - Claims Held by Claimholders in Support Agreement	1,200,000,000
Merger - Price per Share US Air Stock at Close	$ 10.40
Merger - Discount on Conversion Price of New American Stock	3.50%
Merger - Portion to Existing Stockholders	3.50%
Merger - Portion to Labor Related Claimholders	23.60%