Segment Information - Reconciliation of Adjusted EBITDA to Net Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting [Abstract]
Net income attributable to common stockholders	$ 8.6	$ 23.2
Net income attributable to the non-controlling interests	0.0	0.7
Income from discontinued operations, net of tax	(0.2)	(27.4)
Income tax expense (benefit)	4.1	(10.4)
Interest expense, net	16.7	38.1
Depreciation expense	10.5	10.3
Amortization expense	29.4	28.4
EBITDA	69.1	62.9
Adjustments to reconcile to Adjusted EBITDA:
Amortization of inventory step-up	1.4	0.0
Restructuring expense	1.0	2.6
Acquisition and integration costs	6.6	1.4
Foreign exchange loss (gain) on foreign denominated external and internal long-term debt	29.1	(28.3)
Debt refinancing costs	0.0	60.7
Change in fair value of contingent consideration	0.0	2.4
Other, net	2.9	(3.1)
Adjusted EBITDA	$ 110.1	$ 98.6