Retirement Benefit Plans - Changes in Plan Assets and Benefit Obligations in AOCL (Details) - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
U.S. Plans
Changes in prior service cost recognized in accumulated other comprehensive loss (income):
Accumulated other comprehensive loss at beginning of year	$ 1.5	$ 2.7
Prior service cost	0.0	0.0
Recognized prior service cost	(1.2)	(1.2)
Foreign currency impact	0.0	0.0
Accumulated other comprehensive income at ending of year	0.3	1.5
International Plans
Changes in prior service cost recognized in accumulated other comprehensive loss (income):
Accumulated other comprehensive loss at beginning of year	4.2	3.9
Prior service cost	0.0	0.5
Recognized prior service cost	(0.1)	(0.2)
Foreign currency impact	(0.5)	0.0
Accumulated other comprehensive income at ending of year	$ 3.6	$ 4.2