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Accumulated Other Comprehensive Income (Loss) | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Accumulated Other Comprehensive Income (Loss) | Accumulated Other Comprehensive Income (Loss) Comprehensive income (loss) includes changes in fair value of our aircraft fuel derivatives which qualify for hedge accounting. A rollforward of the amounts included in accumulated other comprehensive income (loss), net of taxes for the years ended December 31, 2020, 2019, and 2018 is as follows (in millions):
|  | Aircraft Fuel Derivatives(1)(2) |  | Total
Balance of accumulated income, at December 31, 2017 |  | $ | — |  |  | $ | — |
Reclassifications into earnings, net of deferred taxes of $0 |  | 1 |  |  | 1 |
Change in fair value, net of deferred taxes of $2 |  | (4) |  |  | (4) |
Balance of accumulated (loss), at December 31, 2018 |  | (3) |  |  | (3) |
Reclassifications into earnings, net of deferred taxes of $(1) |  | 4 |  |  | 4 |
Change in fair value, net of deferred taxes of $0 |  | 1 |  |  | 1 |
Balance of accumulated income, at December 31, 2019 |  | 2 |  |  | 2 |
Reclassifications into earnings, net of deferred taxes of $(5) |  | 9 |  |  | 9 |
Change in fair value, net of deferred taxes of $5 |  | (11) |  |  | (11) |
Balance of accumulated income, at December 31, 2020 |  | $ | — |  |  | $ | — |
(1)Reclassified to aircraft fuel expense. (2)In 2020, the Company made several capacity reductions in response to the COVID-19 pandemic. These capacity reductions led to the discontinuance of hedge accounting on a number of our aircraft fuel derivatives as the forecasted consumption of aircraft fuel was no longer probable. L osses of $5 million that were previously deferred in other comprehensive loss were reclassified to interest income and other during the year ended December 31, 2020.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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