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Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2025
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Schedule of Components of Comprehensive Loss | The differences between Net loss and Comprehensive loss for the three months ended March 31, 2025 and 2024 were as follows:
| Three months ended March 31,
(in millions) | 2025 |  | 2024
NET LOSS | $ | (149) |  |  | $ | (231) |
Unrealized gain on fuel derivative instruments, net of deferred taxes of $— and $6 | — |  |  | 17 |
Other, net of deferred taxes of $— and $— | 1 |  |  | 2 |
Total other comprehensive income | $ | 1 |  |  | $ | 19 |
COMPREHENSIVE LOSS | $ | (148) |  |  | $ | (212) |
Schedule of Rollforward of the Amounts Included in AOCI, Net of Taxes | A rollforward of the amounts included in AOCI, net of taxes, is shown below for the three months ended March 31, 2025:
(in millions) | Fuel derivatives |  |  |  | Defined benefit plan items |  | Other |  | Deferred tax impact |  | Accumulated other comprehensive income (loss)
Balance at December 31, 2024 | $ | (193) |  |  |  |  | $ | 167 |  |  | $ | (7) |  |  | $ | 8 |  |  | $ | (25) |
Changes in fair value | (38) |  |  |  |  | — |  |  | — |  |  | 9 |  |  | (29) |
Reclassification to earnings | 38 |  |  |  |  | — |  |  | 1 |  |  | (9) |  |  | 30 |
Balance at March 31, 2025 | $ | (193) |  |  |  |  | $ | 167 |  |  | $ | (6) |  |  | $ | 8 |  |  | $ | (24) |
Schedule of Reclassification out of Accumulated Other Comprehensive Loss | The following table illustrates the significant amounts reclassified out of each component of AOCI for the three months ended March 31, 2025:
Three months ended March 31, 2025
(in millions) |  | Amounts reclassified from AOCI |  | Affected line item in the unaudited Condensed Consolidated Statement of Comprehensive Loss
AOCI components |  |
Unrealized loss on fuel derivative instruments |  | $ | 38 |  |  | Fuel and oil expense
|  | 9 |  |  | Less: Tax expense
|  | $ | 29 |  |  | Net of tax
Other |  | $ | 1 |  |  | Other operating expenses
|  | — |  |  | Less: Tax expense
|  | $ | 1 |  |  | Net of tax
Total reclassifications for the period |  | $ | 30 |  |  | Net of tax

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 1 -Section 45 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1 + Details
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