LEASES - Narrative (Details) $ in Millions	Dec. 31, 2025 USD ($) aircraft
Starlink Satellite Wi-Fi Equipment And Regional Aircraft Under Capacity Purchase Agreements ("CPAs")
Lessee, Lease, Description [Line Items]
Liability for leases not yet commenced | $	$ 342
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term (in years)	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term (in years)	10 years
B-737-800
Lessee, Lease, Description [Line Items]
Number of leased aircraft	10
B-737-800 Freighter
Lessee, Lease, Description [Line Items]
Number of leased aircraft	2
B-737-900
Lessee, Lease, Description [Line Items]
Number of leased aircraft	14
A-330-200
Lessee, Lease, Description [Line Items]
Number of leased aircraft	12
Number of leased aircraft, finance lease	4
A321-200neo
Lessee, Lease, Description [Line Items]
Number of leased aircraft	4
Number of leased aircraft, finance lease	2
A-330-300
Lessee, Lease, Description [Line Items]
Number of leased aircraft not accounted as leases	10
Embraer E175 aircraft | SkyWest
Lessee, Lease, Description [Line Items]
Number of leased aircraft	42
Embraer E175 aircraft | Minimum | SkyWest
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term (in years)	4 years
Embraer E175 aircraft | Maximum | SkyWest
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term (in years)	9 years