Postretirement Benefit Plans - Rollforward of the Projected Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024		Dec. 31, 2023	Dec. 31, 2022
Change in benefit obligation
Benefit obligation as of January 1	$ 150.6		$ 149.8
Service cost	$ 1.1		$ 1.1
DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleListNotDisclosedFlag	Interest cost		Interest cost
Interest cost	$ 5.6		$ 6.1
Amendments	0.5		0.0
Actuarial loss (gain)(a)	(12.6)	[1]	0.8
Benefits paid	(8.2)		(9.1)
Divestitures/Settlement	(2.7)		(0.4)
Foreign currency translation	(4.7)		2.3
Benefit obligation as of December 31	129.6		150.6	$ 149.8
Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1	84.4
Service cost	0.8		0.8	1.2
Interest cost	2.7		3.0	1.3
Benefit obligation as of December 31	71.6		84.4
Other Postretirement Benefits Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1	66.2		70.7
Service cost	0.3		0.3	0.6
Interest cost	2.9		3.1	2.2
Amendments	0.0		0.0
Actuarial loss (gain)(a)	(7.0)	[1]	(2.9)
Benefits paid	(4.0)		(5.0)
Divestitures/Settlement	(0.4)		0.0
Foreign currency translation	0.0		0.0
Benefit obligation as of December 31	58.0		66.2	70.7
United States | Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1	11.2		11.2
Service cost	0.0		0.0	0.0
Interest cost	0.5		0.6	0.3
Amendments	0.0		0.0
Actuarial loss (gain)(a)	(0.4)		0.3
Benefits paid	(0.9)		(0.9)
Divestitures/Settlement	0.0		0.0
Foreign currency translation	0.0		0.0
Benefit obligation as of December 31	10.4		11.2	11.2
International Plan [Member] | Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1	73.2		67.9
Service cost	0.8		0.8	1.2
Interest cost	2.2		2.4	1.0
Amendments	0.5		0.0
Actuarial loss (gain)(a)	(5.2)	[1]	3.4
Benefits paid	(3.3)		(3.2)
Divestitures/Settlement	(2.3)		(0.4)
Foreign currency translation	(4.7)		2.3
Benefit obligation as of December 31	$ 61.2		$ 73.2	$ 67.9

[1] The actuarial gain in 2024 is primarily due to an increase in discount rates during the year.