Subsequent Events Narrative (Detail) (USD $)		1 Months Ended				1 Months Ended								1 Months Ended				3 Months Ended
	Feb. 14, 2013	Jan. 23, 2013 Capacity Purchase Arrangements [Member]	Dec. 31, 2012 Capacity Purchase Arrangements [Member]	Dec. 31, 2012 Purchase Commitment [Member]	Jan. 23, 2013 Purchase Commitment [Member] American Jet Aircraft And Engines [Member]	Jan. 23, 2013 Boeing Seven Eight Seven Eight For Boeing Seven Eight Seven Nine [Member]	Jan. 23, 2013 Boeing 737 Family [Member]	Jan. 23, 2013 Boeing Seven Seven Seven Family [Member]	Jan. 23, 2013 Boeing 787 Family [Member]	Jan. 23, 2013 Boeing 737 MAX Aircraft [Member]	Jan. 23, 2013 Embraer One Seven Five [Member]	Jan. 23, 2013 Embraer One Seven Five [Member] Maximum [Member]	Jan. 23, 2013 Embraer One Seven Five [Member] Minimum [Member]	Jan. 24, 2013 New Eetc [Member]	Jan. 24, 2013 New Eetc [Member] Boeing 737-823 [Member]	Jan. 24, 2013 New Eetc [Member] Boeing 777-223ER [Member]	Jan. 24, 2013 New Eetc [Member] Boeing 777-300 ER Aircraft [Member]	Dec. 31, 2012 Refinancing Eetc [Member]	Dec. 31, 2012 Refinancing Eetc [Member] Boeing 737-823 [Member]	Dec. 31, 2012 Refinancing Eetc [Member] Boeing 777-223ER [Member]	Dec. 31, 2012 Refinancing Eetc [Member] Boeing 757-223 [Member]	Dec. 31, 2012 Refinancing Eetc [Member] Boeing 767-323ER [Member]
Subsequent Event [Line Items]
Restructured Aircraft Purhase Agreement Aircraft Substitution						20
Option to Purchase Aircraft							40	13	58	60
Aircraft to be acquired										100
Unrecorded Unconditional Purchase Obligation, Due within Two Years		$ 589,000,000	$ 188,000,000	$ 1,000,000,000	$ 1,500,000,000
Unrecorded Unconditional Purchase Obligation, Due within Three Years		739,000,000	179,000,000	314,000,000	1,700,000,000
Unrecorded Unconditional Purchase Obligation, Due within Four Years		736,000,000	170,000,000	355,000,000	2,100,000,000
Unrecorded Unconditional Purchase Obligation, Due within Five Years		580,000,000	11,000,000	745,000,000	2,100,000,000
Aircraft to be acquired by Republic Airlines											53
Unrecorded Unconditional Purchase Obligation, Due within One Year		353,000,000	249,000,000	2,100,000,000	2,300,000,000
First Class Seats											12
Main Cabin Seats											64
Aircraft phased into operation each month												3	2
Unrecorded Unconditional Purchase Obligation, Due after Five Years		4,800,000,000	0	6,600,000,000	12,800,000,000
Amount of Refinancing EETC to be offered pursuant to Rule 144A																		1,500,000,000
Term of Unrecorded Unconditional Purchase Obligation		12
Number of Aircraft to be Collateralized															8	1	4		41	19	14	1
Amount of New EETC to be offered pursuant to Rule 144A														750,000,000
Merger - Portion of Shares to US Air Stakeholders	28.00%
Merger - Portion of Shares to AMR Stakeholders	72.00%
Merger - AMR Termination Fee	135,000,000
Merger - US Air Termination Fee	55,000,000
Merger - Termination Fee in Event of Breach	$ 195,000,000
Merger - Claims Held by Claimholders in Support Agreement	1,200,000,000
Merger - Price per Share US Air Stock at Close	$ 10.4
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%