Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Operating leases:
Operating lease ROU assets	$ 8,094	$ 7,850
Current operating lease liabilities	1,465	1,507
Noncurrent operating lease liabilities	6,559	6,610
Total operating lease liabilities	8,024	8,117
Finance leases:
Property and equipment, at cost	1,364	1,201
Accumulated amortization	(779)	(653)
Property and equipment, net	585	548
Current finance lease liabilities	216	174
Noncurrent finance lease liabilities	545	563
Total finance lease liabilities	$ 761	$ 737
Weighted average remaining lease term:
Operating leases	8 years 3 months 18 days	7 years 7 months 6 days
Finance leases	5 years 1 month 6 days	4 years 7 months 6 days
Weighted average discount rate:
Operating leases	7.40%	6.30%
Finance leases	7.20%	6.10%
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current maturities of long-term debt and finance leases	Current maturities of long-term debt and finance leases
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-Term Debt and Lease Obligation	Long-Term Debt and Lease Obligation
American Airlines, Inc.
Operating leases:
Operating lease ROU assets	$ 8,033	$ 7,810
Current operating lease liabilities	1,449	1,496
Noncurrent operating lease liabilities	6,512	6,578
Total operating lease liabilities	7,961	8,074
Finance leases:
Property and equipment, at cost	1,336	1,201
Accumulated amortization	(767)	(653)
Property and equipment, net	569	548
Current finance lease liabilities	209	174
Noncurrent finance lease liabilities	535	563
Total finance lease liabilities	$ 744	$ 737
Weighted average remaining lease term:
Operating leases	8 years 3 months 18 days	7 years 7 months 6 days
Finance leases	5 years	4 years 7 months 6 days
Weighted average discount rate:
Operating leases	7.40%	6.20%
Finance leases	7.10%	6.10%
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization	Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current maturities of long-term debt and finance leases	Current maturities of long-term debt and finance leases
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-Term Debt and Lease Obligation	Long-Term Debt and Lease Obligation