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Comprehensive Loss (Tables)

3 Months Ended

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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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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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

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