XML 74 R60.htm IDEA: XBRL DOCUMENT v3.26.1
Summary of Significant Accounting Policies - Concentrations of Risk (Details) - employeeGroup
2 Months Ended 10 Months Ended 12 Months Ended
Mar. 12, 2025
Dec. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Total operating expenses | Aircraft fuel expenditure concentration risk | Fuel Costs          
Concentration Risk [Line Items]          
Concentration of risk 21.00% 22.00%   25.00% 31.00%
Number of employees, total | Unionized employees concentration risk          
Concentration Risk [Line Items]          
Concentration of risk     81.00%    
Number of union-represented employee groups   6 6