Landfill and Environmental Remediation Liabilities - Changes (Detail) $ in Millions	12 Months Ended
Dec. 31, 2024 USD ($)
Landfill and Environmental Remediation Liabilities
Ending balance, environmental remediation	$ 222
Landfill [Member]
Landfill and Environmental Remediation Liabilities
Beginning balance, landfill	2,853
Obligations incurred and capitalized	91
Obligations settled	(136)
Interest accretion	133
Revisions in estimates	121
Acquisitions, divestitures and other adjustments	(5)
Ending balance, landfill	3,057
Environmental Remediation Liabilities [Member]
Landfill and Environmental Remediation Liabilities
Beginning balance, environmental remediation	209
Obligations settled	(23)
Revisions in estimates and interest rate assumptions	36
Ending balance, environmental remediation	$ 222

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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