Merger (Details) - USD ($) $ / shares in Units, $ in Millions	Jul. 28, 2022	Jul. 27, 2022	Oct. 26, 2022
Frontier Merger Agreement
Business Acquisition [Line Items]
Termination agreement amount paid		$ 25.0
JetBlue Airways
Business Acquisition [Line Items]
Merger consideration, price per share (in dollars per share)	$ 33.50
Approval prepayment amount price per share (in dollars per share)	2.50
Additional approval prepayment amount price per share (in dollars per share)	0.10
Approval prepayment maximum share price threshold (in dollars per share)	$ 1.15
Business acquisition, breakup fee	$ 94.2
Payment to be received upon termination of merger agreement, antitrust regulatory clearance not approved	70.0
Payment to be received by stockholders' upon termination of merger agreement, antitrust regulatory clearance not approved	$ 400.0
JetBlue Airways | Subsequent Event
Business Acquisition [Line Items]
Approval prepayment amount price per share (in dollars per share)			$ 2.50
JetBlue Merger Agreement | JetBlue Airways
Business Acquisition [Line Items]
Reimbursement of prior business exit costs		$ 25.0