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Revenue Recognition - Narrative (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Revenue Recognition [Abstract]    
Contract with Customer, Liability, Current $ 363,514 $ 370,915
Contract with Customer, Liability, Forward Bookings 32290000000.00%  
Contract with Customer, Liability, Credit Voucher Bookings 4060000000.00%  
Revenue, Performance Obligation, Description of Timing 12 months  
Air Traffic Liability, Recognized   $ 370,900
Air Traffic Liability, Revenue Recognition, Percentage 89.30%