Commitments, Contingencies and Guarantees - Unrecorded Unconditional Purchase Obligations (Detail) pure in Millions, $ in Millions	Dec. 31, 2015 USD ($)
Facility Construction or Improvement Contracts [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2016	$ 211
2017	2
Total	213
Facility Construction or Improvement Contracts [Member] | American Airlines, Inc. [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2016	211
2017	2
Total	213
Information Technology Contracts [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2016	160
2017	136
2018	107
2019	88
2020	6
Total	497
Information Technology Contracts [Member] | American Airlines, Inc. [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2016	160
2017	136
2018	107
2019	88
2020	6
Total	497
Capacity Purchase Arrangements [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2016	1,672
2017	1,553
2018	1,249
2019	1,075
2020	881
2021 and Thereafter	$ 2,393
Total	8,823
Capacity Purchase Arrangements [Member] | American Airlines, Inc. [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
2016	$ 1,672
2017	1,553
2018	1,249
2019	1,075
2020	881
2021 and Thereafter	2,393
Total	$ 8,823