Retirement Benefit Plans - Components of Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Postretirement Medical Benefits
Defined Benefit Plan, Plan Assets, Category [Line Items]
Service cost	$ 0.0	$ 0.1	$ 0.1
Interest cost	0.2	0.1	0.2
Expected return on plan assets	0.0	0.0	0.0
Amortization of net actuarial loss	0.0	0.0	0.0
Net periodic benefit cost (credit)	0.2	0.2	0.3
UNITED STATES | Pension Plan
Defined Benefit Plan, Plan Assets, Category [Line Items]
Service cost	0.0	0.0	0.0
Interest cost	0.0	0.1	0.0
Expected return on plan assets	0.0	0.0	0.0
Amortization of net actuarial loss	0.1	0.0	0.1
Net periodic benefit cost (credit)	0.1	0.1	0.1
Non-U.S. Plan | Pension Plan
Defined Benefit Plan, Plan Assets, Category [Line Items]
Service cost	0.3	0.0	0.0
Interest cost	0.2	0.2	0.2
Expected return on plan assets	(0.4)	(0.4)	(0.3)
Amortization of net actuarial loss	0.0	0.1	0.0
Net periodic benefit cost (credit)	$ 0.1	$ (0.1)	$ (0.1)