Retirement Benefit Plan - Changes in Fair Value of Plan Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
United States [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets at fair market value - beginning of year	$ 499.5	$ 474.1
Actual return on plan assets	(81.5)	50.5
Employer contributions	1.7	3.1
Settlements		(14.9)
Benefits paid	(23.5)	(13.3)
Plan assets at fair market value - end of year	396.2	499.5
Funded status	29.4	(3.6)
Foreign [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Plan assets at fair market value - beginning of year	821.2	756.7
Actual return on plan assets	(93.8)	86.6
Employer contributions	19.8	22.4
Employee contributions	24.5	23.4
Settlements	(2.3)	(3.0)
Benefits paid	(64.1)	(41.7)
Expenses paid	(0.2)	(0.2)
Translation (loss) gain	(37.9)	(23.0)
Plan assets at fair market value - end of year	667.2	821.2
Funded status	$ 99.3	$ 13.3