Commitments, Contingencies And Guarantees Commitments, Contingencies And Guarantees - Purchase and Lease Commitments (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013
Long-term Purchase Commitment [Line Items]
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months	$ 371	[1]
Unrecorded Unconditional Purchase Obligation, Due within Two Years	1,937	[1]
Unrecorded Unconditional Purchase Obligation, Due within Three Years	1,652	[1]
Unrecorded Unconditional Purchase Obligation, Due within Four Years	2,008	[1]
Unrecorded Unconditional Purchase Obligation, Due within Five Years	2,038	[1]
Unrecorded Unconditional Purchase Obligation, Due after Five Years	12,298	[1]
Unrecorded Unconditional Purchase Obligation	20,304	[1]
Lease [Member]
Long-term Purchase Commitment [Line Items]
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months	237
Unrecorded Unconditional Purchase Obligation, Due within Two Years	1,018
Unrecorded Unconditional Purchase Obligation, Due within Three Years	1,228
Unrecorded Unconditional Purchase Obligation, Due within Four Years	1,447
Unrecorded Unconditional Purchase Obligation, Due within Five Years	1,673
Unrecorded Unconditional Purchase Obligation, Due after Five Years	12,385
Unrecorded Unconditional Purchase Obligation	17,988
Capacity Purchase Arrangements [Member]
Long-term Purchase Commitment [Line Items]
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months	67
Unrecorded Unconditional Purchase Obligation, Due within Two Years	521
Unrecorded Unconditional Purchase Obligation, Due within Three Years	670
Unrecorded Unconditional Purchase Obligation, Due within Four Years	676
Unrecorded Unconditional Purchase Obligation, Due within Five Years	520
Unrecorded Unconditional Purchase Obligation, Due after Five Years	4,360
Unrecorded Unconditional Purchase Obligation	$ 6,814

[1] These amounts are net of purchase deposits currently held by the manufacturers. American has granted Boeing a security interest in American’s purchase deposits with Boeing. The Company’s purchase deposits totaled $709 million as of September 30, 2013.