Regional Expenses (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Regional Expenses [Line Items]
Aircraft fuel and related taxes	$ 217	$ 1,995	$ 1,612	$ 3,722
Salaries, wages and benefits	2,538	3,200	5,679	6,290
Maintenance, materials and repairs	287	575	915	1,136
Other rent and landing fees	315	535	783	1,039
Aircraft rent	334	334	669	661
Selling expenses	43	401	348	771
Depreciation and amortization	499	489	1,059	969
Special items, net	(1,672)	121	(447)	259
Other	568	1,271	1,744	2,521
Total regional expenses	801	1,886	2,724	3,648
American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	217	1,995	1,612	3,722
Salaries, wages and benefits	2,538	3,198	5,676	6,286
Maintenance, materials and repairs	287	575	915	1,136
Other rent and landing fees	315	535	783	1,039
Aircraft rent	334	334	669	661
Selling expenses	43	401	348	771
Depreciation and amortization	499	489	1,059	969
Special items, net	(1,697)	121	(472)	259
Other	568	1,272	1,765	2,522
Total regional expenses	756	1,911	2,647	3,702
Regional Carrier [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	92	487	480	909
Salaries, wages and benefits	368	439	838	848
Capacity purchases from third-party regional carriers	179	352	533	692
Maintenance, materials and repairs	56	101	171	195
Other rent and landing fees	104	162	257	329
Aircraft rent	3	8	8	15
Selling expenses	14	106	94	197
Depreciation and amortization	84	83	168	162
Special items, net	(178)	0	(85)	0
Other	79	148	260	301
Total regional expenses	801	1,886	2,724	3,648
Regional Carrier [Member] \| American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	92	487	480	909
Salaries, wages and benefits	71	85	155	165
Capacity purchases from third-party regional carriers	570	907	1,483	1,765
Maintenance, materials and repairs	1	5	6	9
Other rent and landing fees	98	154	242	313
Aircraft rent	3	8	8	15
Selling expenses	14	105	94	197
Depreciation and amortization	71	71	141	138
Special items, net	(203)	0	(110)	0
Other	39	89	148	191
Total regional expenses	756	$ 1,911	2,647	3,702
Regional Carrier [Member] \| Republic Airline Inc. [Member]
Regional Expenses [Line Items]
Capacity purchases from third-party regional carriers	61		211	292
Regional Carrier [Member] \| Republic Airline Inc. [Member] \| American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Capacity purchases from third-party regional carriers	$ 61		$ 211	$ 292
Republic Airways Holdings, Inc. [Member] \| American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Ownership percentage	25.00%		25.00%

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Restructuring And Other, Net

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Maintenance costs incurred and directly related to services rendered by an entity during the reporting period. Includes the cost of inspections and repairs, materials and routine maintenance costs for all aircraft and engines.

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Fuel costs incurred that are directly related to goods produced and sold and services rendered during the reporting period.

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Direct costs incurred at airports in which the entity conducts flight operations. The costs primarily consist of fees paid to the airport authority for takeoff and landing, gate space and facilities, allocations of common space such as security and other terminal costs and fuel storage facilities.

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