2025 Chapter 11 Bankruptcy Proceedings - Schedule of Liabilities Subject to Compromise (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Reorganizations [Abstract]
Lease liabilities	$ 4,184,100
Long-term debt	1,609,400
Accounts payable	124,400
Other current liabilities	45,700
Deferred gains and other long-term liabilities	19,400
Air traffic liability	500
Liabilities subject to compromise	$ 5,983,485	$ 1,635,104