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Employee Benefits - Summary of Total Expense Related to All Postretirement Benefit Plans (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net periodic postretirement benefit cost relating to defined benefit plans | $ 8.4 | $ 5.6 | $ 4.1
Postretirement Benefit Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined contribution plan, cost | 18.1 | 17.1 | 13.9
Deferred compensation arrangement with individual, compensation expense | 1.2 | (0.6) | 0.7
Multiemployer plan, contributions by employer | 5.6 | 5.2 | 5.0
Net periodic postretirement benefit cost relating to defined benefit plans | 13.4 | 13.1 | 9.4
Total other employee benefit plans | $ 38.3 | $ 34.8 | $ 29.0

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