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Pension and Post-Employment Benefits - Fair Value of Pension Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair value of pension assets
Total plan assets	$ 159.8	$ 118.0
Non-US [Member]
Fair value of pension assets
Debt securities	733.7	843.8
Cash	105.2	32.9
Total plan assets	838.9	876.7
Non-US [Member] | Debt Securities Issued by Non-U.S. Government and Government Agencies [Member]
Fair value of pension assets
Debt securities	80.3	99.5
Non-US [Member] | Corporate Debt Securities [Member]
Fair value of pension assets
Debt securities	445.7	488.0
Non-US [Member] | Real Estate [Member]
Fair value of pension assets
Debt securities	47.0	40.2
Non-US [Member] | Insurance Contracts [Member]
Fair value of pension assets
Debt securities	162.2	167.4
Non-US [Member] | Investments Measured At Net Asset Value [Member]
Fair value of pension assets
Debt securities		51.0
Non-US [Member] | Other Financial Derivatives [Member]
Fair value of pension assets
Debt securities	(1.5)	(2.3)
Non-US [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension assets
Debt securities	127.3	139.7
Cash	105.2	32.9
Total plan assets	232.5	172.6
Non-US [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Debt Securities Issued by Non-U.S. Government and Government Agencies [Member]
Fair value of pension assets
Debt securities	80.3	99.5
Non-US [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Real Estate [Member]
Fair value of pension assets
Debt securities	47.0	40.2
Non-US [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of pension assets
Debt securities	444.2	485.7
Total plan assets	444.2	485.7
Non-US [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Securities [Member]
Fair value of pension assets
Debt securities	445.7	488.0
Non-US [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Financial Derivatives [Member]
Fair value of pension assets
Debt securities	(1.5)	(2.3)
Non-US [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension assets
Debt securities	162.2	167.4
Total plan assets	162.2	167.4
Non-US [Member] | Significant Unobservable Inputs (Level 3) [Member] | Insurance Contracts [Member] | Other Asset Backed Securitites [Member]
Fair value of pension assets
Debt securities	$ 162.2	$ 167.4

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

+ References

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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