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Retirement Benefit Plans - Plans with Benefit Obligations in Excess of Plan Assets (Detail) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
United States [Member]    
Pension Plans, Postretirement and Other Employee Benefits [Line Items]    
Projected benefit obligation $ 1.5 $ 468.5
Plan assets at fair market value   462.2
Foreign [Member]    
Pension Plans, Postretirement and Other Employee Benefits [Line Items]    
Projected benefit obligation 26.8 38.8
Plan assets at fair market value $ 7.9 $ 8.1