LEASES - Maturities of Lease Liabilities (Details) $ in Millions	Dec. 31, 2025 USD ($)
Aircraft
Operating Leases
2026	$ 244
2027	233
2028	213
2029	194
2030	159
Thereafter	305
Total Lease Payments	1,348
Less: Imputed interest	(237)
Total	1,111
Finance Leases
2026	193
2027	16
2028	16
2029	16
2030	10
Thereafter	14
Total Lease Payments	265
Less: Imputed interest	(22)
Total	243
Other
Operating Leases
2026	35
2027	29
2028	27
2029	24
2030	24
Thereafter	394
Total Lease Payments	533
Less: Imputed interest	(286)
Total	247
Finance Leases
2026	0
2027	0
2028	0
2029	0
2030	0
Thereafter	7
Total Lease Payments	7
Less: Imputed interest	(4)
Total	$ 3