INCOME TAXES - Net Deferred Income Tax Assets And Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred income tax assets:
Self-insurance accruals	$ 131	$ 110
Net operating loss carryforwards	33	94
Accrued compensation and benefits	102	87
Pension benefits	35	50
Deferred revenue	23	133
Interest expense limitation	75	28
Other	47	39
Deferred tax assets gross	446	541
Valuation allowance	(12)	(87)
Deferred tax assets net	434	454
Deferred income tax liabilities:
Property and equipment basis differences	(1,979)	(2,012)
Intangible assets bases difference	(92)	(65)
Other	(20)	(22)
Deferred tax liabilities, gross	(2,091)	(2,099)
Net deferred income tax liability	(1,657)	(1,645)
Deferred tax assets included in Sales-type lease and other assets	$ 14	$ 13