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Changes in Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2026

Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Loss by Component

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)

Schedule of Reclassifications Out of Accumulated Other Comprehensive Loss

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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Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss).

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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

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