Profit Sharing, Retirement Savings Plans and Defined Benefit Pension Plans - Estimated Future Benefit Payments (Detail) $ in Millions	Dec. 31, 2018 USD ($)
Defined Benefit Plan Disclosure [Line Items]
2019	$ 39.9
2020	36.5
2021	38.9
2022	39.5
2023	38.8
2024 to 2028 (combined)	209.0
Total	402.6
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
2019	3.0
International | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
2019	28.2
2020	24.7
2021	27.2
2022	27.8
2023	27.0
2024 to 2028 (combined)	150.9
Total	285.8
U.S. | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
2019	11.7
2020	11.8
2021	11.7
2022	11.7
2023	11.8
2024 to 2028 (combined)	58.1
Total	$ 116.8