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Commitments and Contingencies (Detail) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) | Jun. 30, 2024 USD ($) site | Dec. 31, 2023 USD ($)
Commitments and Contingencies |  |  |
Number of landfills adjacent to or near homeowners' properties with agreements guaranteeing market value | site |  | 19 |
Increase environmental remediation liabilities |  | $ 18 |
Environmental remediation liabilities |  | $ 208 |
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 |
Dollar threshold for environmental matters requiring disclosure under item 103 of the SEC's Regulation S-K |  | $ 1 |
Workforce covered by collective bargaining (as a percent) |  | 20.00% |
Tax Year 2017 [Member] |  |  |
Commitments and Contingencies |  |  |
Income tax deposit paid | $ 103 |  |
San Jacinto Waste Pits [Member] |  |  |
Commitments and Contingencies |  |  |
Environmental remediation liabilities |  | $ 85 | $ 85
Revolving Credit Facility [Member] |  |  |
Commitments and Contingencies |  |  |
Credit Facility, aggregate capacity |  | $ 3,500 |

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