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Employee Benefit Plans - Schedule of Allocation of Plan Assets (Details) | Dec. 31, 2023
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Equity |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 61.00%
Equity | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 30.00%
Equity | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 85.00%
U.S. Large |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 19.00%
U.S. Large | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 10.00%
U.S. Large | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 40.00%
U.S. Small/Mid |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 5.00%
U.S. Small/Mid | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
U.S. Small/Mid | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 10.00%
International Large |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 13.00%
International Large | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 5.00%
International Large | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 25.00%
International Small/Mid |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 3.00%
International Small/Mid | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
International Small/Mid | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 10.00%
Emerging Markets |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 6.00%
Emerging Markets | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
Emerging Markets | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 15.00%
Private Equity |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 15.00%
Private Equity | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 5.00%
Private Equity | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 30.00%
Fixed Income |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 39.00%
Fixed Income | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 15.00%
Fixed Income | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 70.00%
Public U.S. Fixed Income |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 30.00%
Public U.S. Fixed Income | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 15.00%
Public U.S. Fixed Income | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 60.00%
Private Income |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 9.00%
Private Income | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
Private Income | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 20.00%
Other |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
Other | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
Other | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 5.00%
Cash Equivalents |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
Cash Equivalents | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
Cash Equivalents | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 20.00%
American Airlines, Inc. | Equity |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 61.00%
American Airlines, Inc. | Equity | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 30.00%
American Airlines, Inc. | Equity | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 85.00%
American Airlines, Inc. | U.S. Large |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 19.00%
American Airlines, Inc. | U.S. Large | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 10.00%
American Airlines, Inc. | U.S. Large | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 40.00%
American Airlines, Inc. | U.S. Small/Mid |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 5.00%
American Airlines, Inc. | U.S. Small/Mid | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
American Airlines, Inc. | U.S. Small/Mid | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 10.00%
American Airlines, Inc. | International Large |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 13.00%
American Airlines, Inc. | International Large | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 5.00%
American Airlines, Inc. | International Large | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 25.00%
American Airlines, Inc. | International Small/Mid |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 3.00%
American Airlines, Inc. | International Small/Mid | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
American Airlines, Inc. | International Small/Mid | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 10.00%
American Airlines, Inc. | Emerging Markets |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 6.00%
American Airlines, Inc. | Emerging Markets | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
American Airlines, Inc. | Emerging Markets | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 15.00%
American Airlines, Inc. | Private Equity |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 15.00%
American Airlines, Inc. | Private Equity | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 5.00%
American Airlines, Inc. | Private Equity | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 30.00%
American Airlines, Inc. | Fixed Income |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 39.00%
American Airlines, Inc. | Fixed Income | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 15.00%
American Airlines, Inc. | Fixed Income | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 70.00%
American Airlines, Inc. | Public U.S. Fixed Income |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 30.00%
American Airlines, Inc. | Public U.S. Fixed Income | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 15.00%
American Airlines, Inc. | Public U.S. Fixed Income | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 60.00%
American Airlines, Inc. | Private Income |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 9.00%
American Airlines, Inc. | Private Income | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
American Airlines, Inc. | Private Income | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 20.00%
American Airlines, Inc. | Other |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
American Airlines, Inc. | Other | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
American Airlines, Inc. | Other | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 5.00%
American Airlines, Inc. | Cash Equivalents |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
American Airlines, Inc. | Cash Equivalents | Minimum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 0.00%
American Airlines, Inc. | Cash Equivalents | Maximum |
Defined Benefit Plan Disclosure [Line Items] |
Strategic target asset allocation | 20.00%

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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