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COMMITMENTS (Tables) | 3 Months Ended
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Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Future Minimum Rental Payments for Operating Leases and Unrecorded Unconditional Purchase Obligtaions | Future minimum payments for commitments as of March 31, 2021 (in millions):
|  |  |  |  |  |  |  |  | Aircraft Commitments(a) |  | Capacity Purchase Agreements (b) |  |
Remainder of 2021 |  |  |  |  |  |  |  |  | $ | 111 |  |  | $ | 124 |  |  |
2022 |  |  |  |  |  |  |  |  | 1,325 |  |  | 173 |  |  |
2023 |  |  |  |  |  |  |  |  | 681 |  |  | 178 |  |  |
2024 |  |  |  |  |  |  |  |  | 183 |  |  | 183 |  |  |
2025 |  |  |  |  |  |  |  |  | 15 |  |  | 188 |  |  |
Thereafter |  |  |  |  |  |  |  |  | 12 |  |  | 877 |  |  |
Total |  |  |  |  |  |  |  |  | $ | 2,327 |  |  | $ | 1,723 |  |  |
(a)Includes non-cancelable contractual commitments for aircraft and engines, aircraft maintenance and parts management. (b)Includes all non-aircraft lease costs associated with capacity purchase agreements.

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