Landfill and Environmental Remediation Liabilities - Changes (Detail) $ in Millions	3 Months Ended
Mar. 31, 2024 USD ($)
Landfill and Environmental Remediation Liabilities
Ending balance, environmental remediation	$ 211
Landfill [Member]
Landfill and Environmental Remediation Liabilities
Beginning balance, landfill	2,853
Obligations incurred and capitalized	20
Obligations settled	(20)
Interest accretion	33
Revisions in estimates	(10)
Acquisitions, divestitures and other adjustments	(1)
Ending balance, landfill	2,875
Environmental Remediation Liabilities [Member]
Landfill and Environmental Remediation Liabilities
Beginning balance, environmental remediation	209
Obligations settled	(6)
Revisions in estimates and interest rate assumptions	8
Ending balance, environmental remediation	$ 211

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

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