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Revenue Recognition - Narrative (Details) - USD ($)
$ in Thousands
 6 Months Ended 9 Months Ended
Jun. 30, 2024
Sep. 30, 2024
Dec. 31, 2023
Revenue Recognition [Abstract]      
Contract with Customer, Liability, Current   $ 397,000 $ 353,488
Contract with Customer, Liability, Forward Bookings   34590000000.00%  
Contract with Customer, Liability, Credit Voucher Bookings   5110000000.00%  
Revenue, Performance Obligation, Description of Timing   12 months  
Air Traffic Liability, Recognized $ 353,500    
Air Traffic Liability, Revenue Recognition, Percentage   87.20%