Operating Segments and Related Disclosures - Schedule of Operating Revenues (Details) - USD ($) $ in Thousands	2 Months Ended	10 Months Ended	12 Months Ended
	Mar. 12, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	$ 755,354	$ 3,041,393	$ 4,913,421	$ 5,362,549
Reporting Segment
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	755,354	3,041,393	4,913,421	5,362,549
DOT—Domestic | Reporting Segment
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	663,201	2,673,384	4,358,205	4,676,143
DOT—Latin America | Reporting Segment
Revenues from External Customers and Long-Lived Assets [Line Items]
Total operating revenues	$ 92,153	$ 368,009	$ 555,216	$ 686,406