Regional Expenses	9 Months Ended
Regional Expenses	Sep. 30, 2021
Regional Expenses [Line Items]
Regional Expenses	Regional Expenses Our regional carriers provide scheduled air transportation under the brand name “American Eagle.” The American Eagle carriers include our wholly-owned regional carriers as well as third-party regional carriers. Substantially all of our regional carrier arrangements are in the form of capacity purchase agreements. Expenses associated with American Eagle operations are classified as regional expenses on the condensed consolidated statements of operations. Beginning in the first quarter of 2021, aircraft fuel and related taxes as well as certain salaries, wages and benefits, other rent and landing fees, selling and other expenses are no longer allocated to regional expenses on our condensed consolidated statements of operations. The three and nine months ended September 30, 2020 condensed consolidated statements of operations have been recast to conform to the 2021 presentation. This statement of operations presentation change has no impact on total operating expenses or net loss. Regional expenses for the three months ended September 30, 2021 and 2020 include $78 million and $79 million of depreciation and amortization, respectively, and $1 million and $3 million of aircraft rent, respectively. Regional expenses for the nine months ended September 30, 2021 and 2020 include $236 million and $247 million of depreciation and amortization, respectively, and $5 million and $11 million of aircraft rent, respectively. During the three months ended September 30, 2021 and 2020, we recognized $125 million and $102 million, respectively, of expense under our capacity purchase agreement with Republic Airways Inc. (Republic). During the nine months ended September 30, 2021 and 2020, we recognized $343 million and $313 million, respectively, of expense under our capacity purchase agreement with Republic. We hold a 25% equity interest in Republic Airways Holdings Inc., the parent company of Republic.
American Airlines, Inc.
Regional Expenses [Line Items]
Regional Expenses	Regional Expenses American's regional carriers provide scheduled air transportation under the brand name “American Eagle.” The American Eagle carriers include AAG's wholly-owned regional carriers as well as third-party regional carriers. Substantially all of American's regional carrier arrangements are in the form of capacity purchase agreements. Expenses associated with American Eagle operations are classified as regional expenses on the condensed consolidated statements of operations. Beginning in the first quarter of 2021, aircraft fuel and related taxes as well as certain salaries, wages and benefits, other rent and landing fees, selling and other expenses are no longer allocated to regional expenses on American's condensed consolidated statements of operations. The three and nine months ended September 30, 2020 condensed consolidated statements of operations have been recast to conform to the 2021 presentation. This statement of operations presentation change has no impact on total operating expenses or net loss. Regional expenses for the three months ended September 30, 2021 and 2020 include $65 million and $66 million of depreciation and amortization, respectively, and $1 million and $3 million of aircraft rent, respectively. Regional expenses for the nine months ended September 30, 2021 and 2020 include $197 million and $207 million of depreciation and amortization, respectively, and $5 million and $11 million of aircraft rent, respectively. During the three months ended September 30, 2021 and 2020, American recognized $125 million and $102 million, respectively, of expense under its capacity purchase agreement with Republic Airways Inc. (Republic). During the nine months ended September 30, 2021 and 2020, American recognized $343 million and $313 million, respectively, of expense under its capacity purchase agreement with Republic. American holds a 25% equity interest in Republic Airways Holdings Inc., the parent company of Republic.