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Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
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 $01 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 $01 1 
Balance of accumulated income, at December 31, 20192 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. Losses 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.