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Entry into Merger Agreement with Spirit Airlines (Details) $ / shares in Units, $ in Millions			3 Months Ended
	Nov. 03, 2022 consumer	Jul. 28, 2022 $ / shares	Mar. 31, 2023 USD ($) $ / shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 $ / shares	May 16, 2022 USD ($)
Business Combination, Separately Recognized Transactions [Line Items]
Common Stock, Par or Stated Value Per Share			$ 0.01		$ 0.01
Payment for Spirit Airlines acquisition | $			$ (33)	$ 0
Number of plaintiffs | consumer	25
Goldman Sachs Bank U S A Bank Of America N A and Bof A Securities Inc | Bridge Loan | Senior Secured Bridge Facility
Business Combination, Separately Recognized Transactions [Line Items]
Debt instrument, face amount | $						$ 3,500
Spirit Airlines, Inc.
Business Combination, Separately Recognized Transactions [Line Items]
Common Stock, Par or Stated Value Per Share		$ 0.0001
Acquisition price (in dollars per share)		33.50
Business acquisition amount equal to extent paid (in dollars per share)		2.50
Payment of ticking fee, per share (in dollars per share)		$ 0.10
Additional prepayment period		5 days
Prepayments | $			$ 330
Spirit Airlines, Inc. | Minimum
Business Combination, Separately Recognized Transactions [Line Items]
Business acquisition amount equal to extent paid (in dollars per share)		$ 1.15

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