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Self-Insurance (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Insurance [Line Items] |  |
Self-insurance reserves - current portion | $ 657.5 | $ 574.2
Self-insurance reserves - long-term portion | 333.0 | 322.3
Self-insurance reserves [Member] |  |
Insurance [Line Items] |  |
Self-insurance reserves - current portion | 37.6 | 44.6
Self-insurance reserves - long-term portion | 56.9 | 51.2
Total self-insurance liabilities | $ 94.5 | $ 95.8

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