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Changes in Accumulated Other Comprehensive Loss | 3 Months Ended
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Mar. 31, 2026
Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Changes in Accumulated Other Comprehensive Loss | Note 10. Changes in Accumulated Other Comprehensive Loss The following table presents the changes in accumulated other comprehensive loss by component for the quarters ended March 31, 2026 and 2025 (in millions):
| Accumulated Other Comprehensive Loss for the Quarter Ended March 31, 2026 |  | Accumulated Other Comprehensive Loss for the Quarter Ended March 31, 2025
| Changes related to cash flow derivative hedges |  | Changes in defined benefit plans |  | Foreign currency translation adjustments |  | Accumulated other comprehensive loss |  | Changes related to cash flow derivative hedges |  | Changes in defined benefit plans |  | Foreign currency translation adjustments |  | Accumulated other comprehensive loss
Accumulated comprehensive loss at beginning of the year | $ | (595) |  |  | $ | 6 |  |  | $ | (15) |  |  | $ | (604) |  |  | $ | (823) |  |  | $ | 10 |  |  | $ | 11 |  |  | $ | (802) |
Other comprehensive income (loss) before reclassifications | 239 |  |  | (2) |  |  | — |  |  | 237 |  |  | 133 |  |  | (4) |  |  | (17) |  |  | 112 |
Amounts reclassified from accumulated other comprehensive loss | (18) |  |  | — |  |  | — |  |  | (18) |  |  | (5) |  |  | — |  |  | — |  |  | (5) |
Net current-period other comprehensive income (loss) | 221 |  |  | (2) |  |  | — |  |  | 219 |  |  | 128 |  |  | (4) |  |  | (17) |  |  | 107 |
Ending balance | $ | (374) |  |  | $ | 4 |  |  | $ | (15) |  |  | $ | (385) |  |  | $ | (695) |  |  | $ | 6 |  |  | $ | (6) |  |  | $ | (695) |
The following table presents reclassifications out of accumulated other comprehensive loss for the quarters ended March 31, 2026 and 2025 (in millions):
|  | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income |  |
Details About Accumulated Other Comprehensive Loss Components |  | Quarter Ended March 31, 2026 |  |  | Quarter Ended March 31, 2025 |  |  |  |  |  |  | Affected Line Item in Statements of Comprehensive Income (Loss)
Gain (loss) on cash flow derivative hedges: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 4 |  |  |  | $ | 7 |  |  |  |  |  |  |  | Interest expense, net of interest capitalized
Foreign currency forward contracts |  | (5) |  |  |  | (6) |  |  |  |  |  |  |  | Depreciation and amortization expenses
Fuel swaps |  | 19 |  |  |  | 4 |  |  |  |  |  |  |  | Fuel
|  | $ | 18 |  |  |  | $ | 5 |  |  |  |  |  |  |  |

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/220/tableOfContent + Details
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