Landfill and Environmental Remediation Liabilities - Changes (Detail) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($)
Landfill and environmental remediation liabilities
Ending balance, environmental remediation	$ 209
Landfill [Member]
Landfill and environmental remediation liabilities
Beginning balance, landfill	2,664
Obligations incurred and capitalized	79
Obligations settled	(147)
Interest accretion	124
Revisions in estimates and interest rate assumptions	131
Acquisitions, divestitures and other adjustments	2
Ending balance, landfill	2,853
Environmental Remediation Liabilities [Member]
Landfill and environmental remediation liabilities
Beginning balance, environmental remediation	204
Obligations settled	(27)
Interest accretion	6
Revisions in estimates and interest rate assumptions	26
Ending balance, environmental remediation	$ 209

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

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