Annual report pursuant to Section 13 and 15(d)

BASIS OF PRESENTATION, AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Life (Details)

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BASIS OF PRESENTATION, AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Estimated Useful Life (Details)
Dec. 31, 2023
Aircraft  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 30 years
Aircraft | Low  
Property, Plant and Equipment [Line Items]  
Salvage value 10.00%
Aircraft | High  
Property, Plant and Equipment [Line Items]  
Salvage value 25.00%
Aircraft accessories and spares | Low  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 5 years
Aircraft accessories and spares | High  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 7 years
Building  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 30 years
Salvage value 10.00%
Leasehold improvements  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 10 years
Other property and equipment | Low  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 3 years
Other property and equipment | High  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 15 years