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Accumulated Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated other comprehensive income (loss), net of tax | A rollforward of the amounts included in accumulated other comprehensive income (loss), net of taxes for the three months ended March 31, 2024 and 2023 is as follows (in millions):
| Aircraft fuel derivatives (1) |  | Available-for-sale securities |  | Total
Balance of accumulated loss, at December 31, 2023 | $ | (3) |  |  | $ | (1) |  |  | $ | (4) |
Reclassifications into earnings, net of taxes of $0 | 2 |  |  | — |  |  | 2 |
Change in fair value, net of taxes of $0 | 1 |  |  | — |  |  | 1 |
Balance of accumulated gain (loss), at March 31, 2024 | $ | — |  |  | $ | (1) |  |  | $ | (1) |
Balance of accumulated income (loss), at December 31, 2022 | $ | 1 |  |  | $ | (1) |  |  | $ | — |
Reclassifications into earnings, net of taxes $0 | (1) |  |  | — |  |  | (1) |
Change in fair value, net of taxes of $(1) | (4) |  |  | — |  |  | (4) |
Balance of accumulated loss, at March 31, 2023 | $ | (4) |  |  | $ | (1) |  |  | $ | (5) |
(1) Reclassified to aircraft fuel expense.

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