Postretirement Benefit Plans - Rollforward of the Projected Benefit Obligations (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
Change in benefit obligation
Benefit obligation as of January 1		$ 214.3		$ 242.8
Service cost		1.8		2.1
Interest cost		3.5		2.8
Amendments		(8.1)		0.0
Actuarial gain(a)	[1]	(44.6)		(14.6)
Benefits paid		(11.1)		(10.3)
Settlement		0.0		(0.2)
Foreign currency translation		(6.0)		(8.3)
Benefit obligation as of December 31		149.8		214.3	$ 242.8
Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1		107.9
Service cost		1.2		1.4	1.5
Interest cost		1.3		1.0	7.9
Benefit obligation as of December 31		79.1		107.9
Other Postretirement Benefits Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1		106.4		118.3
Service cost		0.6		0.7	0.8
Interest cost		2.2		1.8	2.8
Amendments		(8.1)		0.0
Actuarial gain(a)	[1]	(23.3)		(8.2)
Benefits paid		(7.1)		(6.2)
Settlement		0.0		0.0
Foreign currency translation		0.0		0.0
Benefit obligation as of December 31		70.7		106.4	118.3
International Plan [Member] | Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1		93.1		109.0
Service cost		1.2		1.4	1.5
Interest cost		1.0		0.7	1.0
Amendments		0.0		0.0
Actuarial gain(a)	[1]	(18.3)		(6.3)
Benefits paid		(3.1)		(3.2)
Settlement		0.0		(0.2)
Foreign currency translation		(6.0)		(8.3)
Benefit obligation as of December 31		67.9		93.1	109.0
United States | Pension Plan [Member]
Change in benefit obligation
Benefit obligation as of January 1		14.8		15.5
Service cost		0.0		0.0	0.0
Interest cost		0.3		0.3	6.9
Amendments		0.0		0.0
Actuarial gain(a)		(3.0)	[1]	(0.1)
Benefits paid		(0.9)		(0.9)
Settlement		0.0		0.0
Foreign currency translation		0.0		0.0
Benefit obligation as of December 31		$ 11.2		$ 14.8	$ 15.5

[1] The actuarial gain in 2022 and 2021 is primarily due to an increase in discount rates.