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Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2021

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

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 2021 and 2020:

(in millions)			Fuel derivatives						Interest rate derivatives						Defined benefit plan items						Other						Deferred tax impact						Accumulated other comprehensive income (loss)
Balance at December 31, 2019			$	(125)					$	(33)					$	20					$	59					$	18					$	(61)
Changes in fair value			(103)						(34)						(63)						32						39						(129)
Reclassification to earnings			109						1						—						—						(25)						85
Balance at December 31, 2020			$	(119)					$	(66)					$	(43)					$	91					$	32					$	(105)
Cumulative effect of adopting ASU 2016-01 as of January 1, 2018			—						—						—						(31)						11						(20)
Changes in fair value			601						3						109						—						(166)						547
Reclassification to earnings			10						6						—						(60)			(a)			10						(34)
Balance at December 31, 2021			$	492					$	(57)					$	66					$	—					$	(113)					$	388

(a) Investment gains related to prior periods that were reclassified from AOCI into Other (gains) losses, net. See Note 1.

Reclassification out of Accumulated Other Comprehensive Income

The following table illustrates the significant amounts reclassified out of each component of AOCI for the year ended December 31, 2021:

Year ended December 31, 2021
(in millions)						Amounts reclassified from AOCI						Affected line item in the Consolidated Statement of Income (Loss)
AOCI components
Unrealized loss on fuel derivative instruments						$	4					Fuel and oil expense
						6						Other (gains) losses, net
						2						Less: Tax expense
						$	8					Net of tax
Unrealized loss on interest rate derivative instruments						6						Other operating expenses
						1						Less: Tax expense
						$	5					Net of tax
Unrealized gain on deferred compensation plan investment						$	(60)					Other (gains) losses, net
						(13)						Less: Tax expense
						$	(47)					Net of tax
Total reclassifications for the period						$	(34)					Net of tax

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- Definition

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

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- Definition

Tabular disclosure of the components of accumulated other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

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