Commitments and Contingencies (Detail) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2024 USD ($) site	Dec. 31, 2023 USD ($)
Commitments and Contingencies
Number of landfills adjacent to or near homeowners' properties with agreements guaranteeing market value \| site	19
Aggregate increase potential liability	$ 18
Environmental remediation liabilities	$ 211
Number of sites listed on the EPA's NPL for which we have been notified we are a PRP \| site	73
Number of owned sites listed on the EPA's NPL for which we have been notified we are a PRP \| site	14
Number of non-owned sites listed on the EPA's NPL for which we have been notified we are a PRP \| site	59
Workforce covered by collective bargaining (as a percent)	20.00%
San Jacinto Waste Pits [Member]
Commitments and Contingencies
Revisions in estimate		$ 17
Environmental remediation liabilities	$ 85	$ 85
Revolving Credit Facility [Member]
Commitments and Contingencies
Credit Facility, aggregate capacity	$ 3,500

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

Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 410
-SubTopic 30
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
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