Postretirement Benefit Plans - Rollforward of the Projected Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025		Dec. 31, 2024	Dec. 31, 2023
Change in benefit obligation
Benefit obligation as of January 1	$ 129.6		$ 150.6
Service cost	$ 1.0		$ 1.1
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)		Other Nonoperating Income (Expense)
Interest cost	$ 5.3		$ 5.6
Amendments	0.0		0.5
Actuarial loss (gain)(a)	(4.7)	[1]	(12.6)
Benefits paid	(8.5)		(8.2)
Divestitures/Settlement	(0.5)		(2.7)
Foreign currency translation	7.8		(4.7)
Benefit obligation as of December 31	130.0		129.6	$ 150.6
Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1	71.6
Service cost	0.7		0.8	0.8
Interest cost	2.8		2.7	3.0
Benefit obligation as of December 31	71.4		71.6
Other Postretirement Benefits Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1	58.0		66.2
Service cost	0.3		0.3	0.3
Interest cost	2.5		2.9	3.1
Amendments	0.0		0.0
Actuarial loss (gain)(a)	1.7	[1]	(7.0)
Benefits paid	(3.9)		(4.0)
Divestitures/Settlement	0.0		(0.4)
Foreign currency translation	0.0		0.0
Benefit obligation as of December 31	58.6		58.0	66.2
United States | Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1	10.4		11.2
Service cost	0.0		0.0	0.0
Interest cost	0.6		0.5	0.6
Amendments	0.0		0.0
Actuarial loss (gain)(a)	0.4		(0.4)
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	10.5		10.4	11.2
International Plan [Member] | Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1	61.2		73.2
Service cost	0.7		0.8	0.8
Interest cost	2.2		2.2	2.4
Amendments	0.0		0.5
Actuarial loss (gain)(a)	(6.8)	[1]	(5.2)
Benefits paid	(3.7)		(3.3)
Divestitures/Settlement	(0.5)		(2.3)
Foreign currency translation	7.8		(4.7)
Benefit obligation as of December 31	$ 60.9		$ 61.2	$ 73.2

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