Retirement Benefit Plans - Reconciliation of Beginning and Ending Balances of Foreign Pension Plan Assets Measured at Fair Value (Detail) - Foreign [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Schedule of Fair Values of Plan Assets [Line Items]
Plan assets at fair market value - beginning of year	$ 821.2	$ 756.7
Translation gain	(37.9)	(23.0)
Plan assets at fair market value - end of year	667.2	821.2
Fair Value Measurements at Reporting Date Using: Significant Unobservable Inputs (Level 3) [Member]
Schedule of Fair Values of Plan Assets [Line Items]
Plan assets at fair market value - beginning of year	160.6
Change in fair value of assets	8.0
Net purchases and sales	(0.9)
Translation gain	(2.2)
Plan assets at fair market value - end of year	$ 165.5	$ 160.6