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Profit Sharing, Retirement Savings Plans and Defined Benefit Pension Plans - Narrative (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |
Provisions charged from operations for the profit sharing plan and retirement savings plans | $ 45.7 | $ 43.9 | $ 42.5
Contribution of common stock to profit sharing plan (in shares) | 504,626 | 350,668 | 633,875
Defined benefit pension plan corridor rate | 10.00% |  |
Plan assets | $ 596.1 | $ 570.4 |
Expected benefits paid | 4.3 |  |
Equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 73.2 | 75.1 |
Bulk Annuity Contract |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 107.0 | 98.4 |
Minimum | Equity funds | U.S plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation, percentage | 50.00% |  |
Pension Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 596.1 | $ 570.4 | $ 828.3
Expected contribution | $ 9.7 |  |
Pension Plan | U.S plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Reduction in weighted average discount rate basis points | (0.40%) | (2.70%) |
Plan assets | $ 106.6 | $ 113.5 | 150.8
Pension Plan | International plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Reduction in weighted average discount rate basis points | (0.60%) | (2.60%) |
Plan assets | $ 489.5 | $ 456.9 | $ 677.5

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