Landfill and Environmental Costs (Environmental Remediation Liabilities) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Activity in environmental remediation liabilities | |||
| Environmental remediation liabilities, beginning of year | $ 487.5 | $ 454.9 | $ 462.8 |
| Net additions charged to expense | 2.0 | 2.9 | 0.5 |
| Payments | (54.9) | (54.7) | (57.1) |
| Accretion expense (non-cash interest expense) | 18.2 | 17.3 | 17.1 |
| Acquisitions, net of divestitures and other adjustments | 32.6 | 67.1 | 31.6 |
| Environmental remediation liabilities, end of year | 485.4 | 487.5 | 454.9 |
| Less: current portion | (69.2) | (57.4) | (56.1) |
| Long-term portion | $ 416.2 | $ 430.1 | $ 398.8 |
| Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] | Accrued Capping, Closure, Post-closure and Environmental Costs, Long-term portion | Accrued Capping, Closure, Post-closure and Environmental Costs, Long-term portion | Accrued Capping, Closure, Post-closure and Environmental Costs, Long-term portion |
| Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration] | Accrued Capping, Closure, Post-closure and Environmental Costs | Accrued Capping, Closure, Post-closure and Environmental Costs | Accrued Capping, Closure, Post-closure and Environmental Costs |
| Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Long-term portion | Long-term portion | Long-term portion |
| X | ||||||||||
- Definition Accrual for environmental loss contingencies accretion expense. No definition available.
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| X | ||||||||||
- Definition Accrual For Environmental Loss Contingencies, Charges To Expenses For New Losses, Net No definition available.
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| X | ||||||||||
- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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| X | ||||||||||
- Definition Amount of increase (decrease) in the obligation for environmental loss contingencies from business acquisitions (divestitures). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of cash outflow to settle environmental loss contingencies. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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| X | ||||||||||
- Definition Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Indicates line item in statement of financial position that includes accrual for environmental loss contingency classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Indicates line item in statement of financial position that includes accrual for environmental loss contingency classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Indicates line item in statement of financial position that includes accrual for environmental loss contingency. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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