Retirement Benefit Plans - Total Accumulated Benefit Obligations and Plans with Accumulated 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]
Total accumulated benefit obligations	$ 366.8	$ 503.1
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated 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]
Total accumulated benefit obligations	548.6	783.0
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligation	24.5	36.4
Plan assets at fair market value	$ 7.9	$ 8.1