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Pension and Post-Employment Benefits - Fair Value of Pension Assets (Detail) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Fair value of pension assets
Total plan assets	$ 48.1	$ 159.8
Non-US [Member]
Fair value of pension assets
Debt securities	436.1	733.7
Cash	16.0	105.2
Total plan assets	452.1	838.9
Non-US [Member] | Debt Securities Issued by Non-U.S. Government and Government Agencies [Member]
Fair value of pension assets
Debt securities	4.3	80.3
Non-US [Member] | Corporate Debt Securities [Member]
Fair value of pension assets
Debt securities	0.0	445.7
Non-US [Member] | Real Estate [Member]
Fair value of pension assets
Debt securities		47.0
Non-US [Member] | Insurance Contracts [Member]
Fair value of pension assets
Debt securities	431.8	162.2
Non-US [Member] | Other Financial Derivatives [Member]
Fair value of pension assets
Debt securities	0.0	(1.5)
Non-US [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value of pension assets
Debt securities	4.3	127.3
Cash	16.0	105.2
Total plan assets	20.3	232.5
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	4.3	80.3
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
Non-US [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value of pension assets
Debt securities	0.0	444.2
Total plan assets	0.0	444.2
Non-US [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Debt Securities [Member]
Fair value of pension assets
Debt securities		445.7
Non-US [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other Financial Derivatives [Member]
Fair value of pension assets
Debt securities		(1.5)
Non-US [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of pension assets
Debt securities	431.8	162.2
Total plan assets	431.8	162.2
Non-US [Member] | Significant Unobservable Inputs (Level 3) [Member] | Insurance Contracts [Member] | Other Asset Backed Securitites [Member]
Fair value of pension assets
Debt securities	$ 431.8	$ 162.2

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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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