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COMMITMENTS (Tables) | 3 Months Ended
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Mar. 31, 2020
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, 2020 (in millions):
|  |  |  |  |  |  |  |  | Aircraft Commitments(a) |  | Capacity Purchase Agreements (b) |  | Aircraft Maintenance Deposits
Remainder of 2020 |  |  |  |  |  |  |  |  | $ | 416 |  |  | $ | 108 |  |  | $ | 38 |
2021 |  |  |  |  |  |  |  |  | 556 |  |  | 166 |  |  | 55 |
2022 |  |  |  |  |  |  |  |  | 340 |  |  | 174 |  |  | 47 |
2023 |  |  |  |  |  |  |  |  | 200 |  |  | 179 |  |  | 24 |
2024 |  |  |  |  |  |  |  |  | 27 |  |  | 184 |  |  | 6 |
Thereafter |  |  |  |  |  |  |  |  | 26 |  |  | 880 |  |  | 2 |
Total |  |  |  |  |  |  |  |  | $ | 1,565 |  |  | $ | 1,691 |  |  | $ | 172 |
(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. Subsequent to quarter end, Alaska entered into an agreement with SkyWest to defer a portion of 2020 payments.

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