Segment Information - Reconciliation of Adjusted EBITDA to Net Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting [Abstract]
Net income attributable to common stockholders	$ 1.2	$ 1.5	$ 9.8	$ 24.7
Net (loss) income attributable to the non-controlling interests	0.0	(0.1)	0.0	0.6
Loss (income) from discontinued operations, net of tax	1.1	13.3	0.9	(14.1)
Income tax expense (benefit)	5.8	(6.8)	9.9	(17.2)
Interest expense, net	16.9	18.2	33.6	56.3
Depreciation expense	10.5	10.4	21.0	20.7
Amortization expense	28.9	28.4	58.3	56.8
EBITDA	64.4	64.9	133.5	127.8
Adjustments to reconcile to Adjusted EBITDA:
Amortization of inventory step-up	0.0	0.0	1.4	0.0
Restructuring expense	3.3	3.2	4.3	5.8
Acquisition and integration costs	1.3	0.3	7.9	1.7
Foreign exchange loss on foreign denominated external and internal long-term debt	11.8	28.7	40.9	0.4
Debt refinancing costs	0.0	0.3	0.0	61.0
Change in fair value of contingent consideration	0.0	0.5	0.0	2.9
Other, net	4.0	2.6	6.9	(0.5)
Adjusted EBITDA	$ 84.8	$ 100.5	$ 194.9	$ 199.1