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Changes in Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2025

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 six months ended June 30, 2025 and 2024 (in millions):

			Accumulated Other Comprehensive Loss for the Six Months Ended June 30, 2025																								Accumulated Other Comprehensive Loss for the Six Months Ended June 30, 2024
			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			$	(823)					$	10					$	11					$	(802)					$	(666)					$	(2)					$	(6)					$	(674)
Other comprehensive income (loss) before reclassifications			310						—						(26)						284						42						(3)						10						49
Amounts reclassified from accumulated other comprehensive loss			(1)						—						—						(1)						(29)						—						—						(29)
Net current-period other comprehensive income (loss)			309						—						(26)						283						13						(3)						10						20
Ending balance			$	(514)					$	10					$	(15)					$	(519)					$	(653)					$	(5)					$	4					$	(654)

Schedule of Reclassifications Out of Accumulated Other Comprehensive Loss

The following table presents reclassifications out of accumulated other comprehensive loss for the quarters and six months ended June 30, 2025 and 2024 (in millions):

						Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income
Details About Accumulated Other Comprehensive Loss Components						Quarter Ended June 30, 2025									Quarter Ended June 30, 2024						Six Months Ended June 30, 2025						Six Months Ended June 30, 2024												Affected Line Item in Statements of Comprehensive Income (Loss)
Gain (loss) on cash flow derivative hedges:
Interest rate swaps						$	6								$	12					$	13					$	25											Interest expense, net of interest capitalized
Foreign currency forward contracts						(6)									(6)						(12)						(11)												Depreciation and amortization expenses
Foreign currency forward contracts						—									—						—						—												Other (expense) income
Fuel swaps						—									—						—						—												Other (expense) income
Fuel swaps						(4)									11						—						15												Fuel
						$	(4)								$	17					$	1					$	29

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- Definition

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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