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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 |

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- Definition Best estimate of the reasonably possible loss exposure in excess of the amount accrued for remediation, site restoration, postclosure, monitoring commitments, or other exit costs associated with the sale, disposal or abandonment of a particular property resulting from unanticipated contamination of the assets. + References No definition available. + Details
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- Definition Number of landfills adjacent to or near homeowners properties with agreements guaranteeing market value. + References No definition available. + Details
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