Income Taxes - Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Net operating loss, capital loss and tax credit carry-forwards	$ 159	$ 137
Landfill and environmental remediation liabilities	162	195
Operating lease liabilities	276	128
Miscellaneous and other reserves, net	258	143
Total deferred tax assets	855	603
Valuation allowance	(199)	(181)
Deferred tax liabilities:
Property and equipment	(1,308)	(1,091)
Goodwill and other intangibles	(1,895)	(1,046)
Operating lease right-of-use assets	(263)	(111)
Net deferred tax liabilities	$ (2,810)	$ (1,826)