Benefit Plans Benefit Plans - Summary of Benefit Plan (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Change in accumulated other comprehensive income
Acquired benefit plans and other		$ 0.1	$ 0.2	$ (3.2)
Pension Benefits
Change in plan assets
Employer contributions		13.6
Other Benefits
Change in benefit obligation
Benefit obligation at beginning of year		13.7	17.1
Service cost		0.1	0.1	0.1
Interest cost		0.7	0.8	1.0
Actuarial loss (gain)		8.0	1.3
Plan participant contributions		0.0	0.0
Benefits paid		(0.5)	(0.7)
Plan amendments		0.0	0.0
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment		0.0	0.0
Settlements		0.0	0.0
Recognition/establishment of Germany benefit obligation		0.0	0.0	0.0
Foreign currency impact		(0.3)	(2.3)
Acquired benefit plans and other		0.0	0.0
Benefit obligation at end of year		5.7	13.7	17.1
Change in plan assets
Fair value of plan assets at beginning of year		0.0	0.0
Actual return on plan assets		0.0	0.0
Employer contributions		0.5	0.7
Plan participant contributions		0.0	0.0
Benefits paid		(0.5)	(0.7)
Foreign currency impact		0.0	0.0
Settlements		0.0	0.0
Fair value of plan assets at end of year		0.0	0.0	0.0
Funded status		(5.7)	(13.7)
Amounts recognized in balance sheets
Assets for Plan Benefits, Defined Benefit Plan		0.0	0.0
Current liabilities		0.6	0.9
Noncurrent liabilities	[1]	5.1	12.9
Unrecognized net actuarial loss	[2]	4.8	(3.8)
Unrecognized prior service cost (benefit)	[2]	0.0	0.0
Net amount recognized		10.5	10.0
Change in accumulated other comprehensive income
Balance at beginning of year		(3.8)	(7.5)
Prior service credit/loss recognized during the year		0.0	0.0
Net actuarial gains (losses) recognized during the year		8.0	0.4
Net actuarial (losses) gains occurring during the year		0.2	1.3
Net actuarial losses recognized due to settlement		0.0	0.0
Acquired benefit plans and other		0.2	0.0
Foreign currency impact		0.2	2.0
Balance at end of year		4.8	(3.8)	(7.5)
United States | Pension Benefits
Change in benefit obligation
Benefit obligation at beginning of year		620.1	580.0
Service cost		0.0	3.8	3.7
Interest cost		15.9	18.9	22.1
Actuarial loss (gain)		(24.0)	47.7
Plan participant contributions		0.0	0.0
Benefits paid		(27.6)	(30.3)
Plan amendments		0.0	0.0
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment		0.0	0.0
Settlements		0.0	0.0
Recognition/establishment of Germany benefit obligation		0.0	0.0	0.0
Foreign currency impact		0.0	0.0
Acquired benefit plans and other		0.0	0.0
Benefit obligation at end of year		584.4	620.1	580.0
Change in plan assets
Fair value of plan assets at beginning of year		486.4	427.8
Actual return on plan assets		48.9	70.2
Employer contributions		3.5	18.7
Plan participant contributions		0.0	0.0
Benefits paid		(27.5)	(30.3)
Foreign currency impact		0.0	0.0
Settlements		0.0	0.0
Fair value of plan assets at end of year		511.3	486.4	427.8
Funded status		(73.1)	(133.7)
Amounts recognized in balance sheets
Assets for Plan Benefits, Defined Benefit Plan		0.0	2.7
Current liabilities		3.5	3.5
Noncurrent liabilities	[1]	69.6	132.9
Unrecognized net actuarial loss	[2]	(94.9)	(154.4)
Unrecognized prior service cost (benefit)	[2]	0.0	0.0
Net amount recognized		(21.8)	(20.7)
Change in accumulated other comprehensive income
Balance at beginning of year		(154.5)	(159.4)
Prior service credit/loss recognized during the year		0.0	0.0
Net actuarial gains (losses) recognized during the year		50.6	7.8
Net actuarial (losses) gains occurring during the year		9.0	(2.9)
Net actuarial losses recognized due to settlement		0.0	0.0
Acquired benefit plans and other		0.0	0.0
Foreign currency impact		0.0	0.0
Balance at end of year		(94.9)	(154.5)	(159.4)
Foreign Plan [Member] | Pension Benefits
Change in benefit obligation
Benefit obligation at beginning of year		468.7	456.1
Service cost		9.8	9.8	9.8
Interest cost		2.9	4.0	6.5
Actuarial loss (gain)		5.4	(14.6)
Plan participant contributions		1.4	1.4
Benefits paid		(6.5)	(21.7)
Plan amendments		(2.9)	2.1
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment		0.0	(1.1)
Settlements		(18.4)	(0.7)
Recognition/establishment of Germany benefit obligation		0.0	0.0	7.1
Foreign currency impact		(29.1)	37.6
Acquired benefit plans and other		0.0	(33.4)
Benefit obligation at end of year		420.5	468.7	456.1
Change in plan assets
Fair value of plan assets at beginning of year		394.1	359.6
Actual return on plan assets		41.6	15.0
Employer contributions		9.6	8.4
Plan participant contributions		1.4	1.4
Benefits paid		(6.5)	(21.7)
Foreign currency impact		(27.5)	32.1
Settlements		(18.3)	(0.7)
Fair value of plan assets at end of year		394.4	394.1	359.6
Funded status		(26.1)	(74.6)
Amounts recognized in balance sheets
Assets for Plan Benefits, Defined Benefit Plan		0.0	0.0
Current liabilities		3.3	11.5
Noncurrent liabilities	[1]	22.7	63.1
Unrecognized net actuarial loss	[2]	13.8	(4.9)
Unrecognized prior service cost (benefit)	[2]	3.9	1.1
Net amount recognized		43.7	70.8
Change in accumulated other comprehensive income
Balance at beginning of year		(3.8)	6.5
Prior service credit/loss recognized during the year		0.0	0.7
Net actuarial gains (losses) recognized during the year			(0.6)
Net actuarial (losses) gains occurring during the year		0.3	(12.0)
Net actuarial losses recognized due to settlement		(1.1)	1.1
Acquired benefit plans and other		(0.1)	0.2
Foreign currency impact		(1.2)	0.3
Balance at end of year		$ 17.7	$ (3.8)	$ 6.5

[1] Included in the consolidated balance sheets in pensions, post-retirement and other benefits

[2] Represents amounts in accumulated other comprehensive loss that have not yet been recognized as components of net periodic benefit cost.