Segment Information - Reconciliation of Adjusted EBITDA to Net Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting [Abstract]
Net loss attributable to common stockholders	$ 75.7	$ 92.2	$ (324.4)
Add (subtract):
Net income attributable to the non-controlling interests	0.0	0.7	4.5
Loss (income) from discontinued operations, net of tax	1.1	(13.3)	242.9
Income tax expense	4.3	61.3	23.8
Interest expense, net	63.4	90.7	311.0
Depreciation expense	42.2	41.5	44.6
Amortization expense	119.2	113.2	112.1
EBITDA	305.9	386.3	414.5
Adjustments to reconcile to Adjusted EBITDA:
Restructuring expense	6.3	14.1	6.3
Amortization of inventory step-up	2.4	0.7	0.0
Acquisition and integration costs	12.3	1.9	12.1
Foreign exchange loss (gain) on foreign denominated external and internal long-term debt	35.4	(31.9)	6.0
Debt refinancing costs	45.7	62.0	0.5
Foundation contributions	5.0	0.0	0.0
Gain on sale of equity investment	0.0	0.0	(11.3)
Change in fair value of contingent consideration	0.0	(17.4)	(21.8)
Other, net	9.6	1.0	14.4
Adjusted EBITDA	$ 422.6	$ 416.7	$ 420.7