Multiemployer Plan, Contributions By Employer, Percentage Of Total Contributions

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- Definition

Multiemployer Plans, Funded Status, Percentage

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Multiemployer Plans, Funding Improvement Plan And Rehabilitation Plan, Annual Percentage Increase In Contribution Rate By Employer

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- Definition

Amount of cost for defined contribution plan.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of contributions made to multiemployer plan by employer.

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- Definition

Amount of contributions made to multiemployer plan by all employers who participate in plan.

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Employee Benefit Plans - Defined Contribution and Multiemployer Plans (Details) - USD ($) $ in Millions		12 Months Ended
	Jun. 14, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 29, 2019
Defined Contribution Plan Disclosure [Line Items]
Contributions to defined contribution benefit plans		$ 860	$ 846	$ 820
American Airlines, Inc. [Member]
Defined Contribution Plan Disclosure [Line Items]
Contributions to defined contribution benefit plans		836	825	813
Pension Plan [Member] \| International Association of Machinists & Aerospace Workers (IAM) National Pension Fund [Member]
Defined Contribution Plan Disclosure [Line Items]
Contributions to multiemployer plan by company		32	31	31
Contributions to multiemployer plan by all employers			$ 467
Contributions to multiemployer plan by company, percentage of total contributions to plan (more than)			5.00%
Multiemployer plan, funded status percentage (over)					80.00%
Rehabilitation plan, percentage increase in company annual contributions	2.50%
Pension Plan [Member] \| International Association of Machinists & Aerospace Workers (IAM) National Pension Fund [Member] \| American Airlines, Inc. [Member]
Defined Contribution Plan Disclosure [Line Items]
Contributions to multiemployer plan by company		$ 32	$ 31	$ 31
Contributions to multiemployer plan by all employers			$ 467
Contributions to multiemployer plan by company, percentage of total contributions to plan (more than)			5.00%
Multiemployer plan, funded status percentage (over)					80.00%
Rehabilitation plan, percentage increase in company annual contributions	2.50%