Shareholders' Equity and Long-Term Incentive Compensation - AOCI (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Components of accumulated other comprehensive income, net of tax [Roll Forward]
Beginning Balance	$ 640.1
Other comprehensive income (loss) before reclassifications	(0.5)	$ 4.9
Amounts reclassified from accumulated other comprehensive income (loss)	15.9	(0.7)
Current-period other comprehensive income (loss)	15.4	4.2
Ending Balance	1,102.9	640.1
Accum. Other Comprehensive Income
Components of accumulated other comprehensive income, net of tax [Roll Forward]
Beginning Balance	248.5	244.3
Ending Balance	263.9	248.5
Foreign Currency Translation Adjustment
Components of accumulated other comprehensive income, net of tax [Roll Forward]
Beginning Balance	238.6	228.0
Other comprehensive income (loss) before reclassifications	(5.8)	10.6
Amounts reclassified from accumulated other comprehensive income (loss)	19.9	0.0
Current-period other comprehensive income (loss)		10.6
Ending Balance	252.7	238.6
Net Unrealized Gains (losses) on Qualifying Cash Flow Hedges
Components of accumulated other comprehensive income, net of tax [Roll Forward]
Beginning Balance	(4.4)	(1.6)
Other comprehensive income (loss) before reclassifications	5.3	(5.7)
Amounts reclassified from accumulated other comprehensive income (loss)	(0.4)	2.9
Current-period other comprehensive income (loss)	4.9	(2.8)
Ending Balance	0.5	(4.4)
Pension and postretirement liability adjustment and other, tax (provision) benefit	(0.1)	1.4	$ 0.5
Pension and Postretirement Liability Adjustment and Other
Components of accumulated other comprehensive income, net of tax [Roll Forward]
Beginning Balance	14.3	17.9
Other comprehensive income (loss) before reclassifications	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss)	(3.6)	(3.6)
Current-period other comprehensive income (loss)	(3.6)	(3.6)
Ending Balance	10.7	14.3
Pension and postretirement liability adjustment and other, tax (provision) benefit	$ (3.7)	$ (4.9)	$ (6.1)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of tax expense (benefit) allocated to accumulated other comprehensive income (loss) attributable to parent.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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