Segment Information - Reconciliation of Adjusted EBITDA to Net Loss (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting [Abstract]
Net loss from continuing operations									$ 92.2	$ (324.4)	$ (296.2)
Add (subtract):
Net income attributable to the non-controlling interests									0.7	4.5	0.6
(Income) loss from discontinued operations, net of tax	$ (0.1)	$ 0.9	$ 13.3	$ (27.4)	$ (50.4)	$ 401.6	$ (61.4)	$ (46.9)	(13.3)	242.9	103.8
Income tax expense (benefit)									61.3	23.8	(68.6)
Interest expense, net									90.7	311.0	336.9
Depreciation expense									41.5	44.6	46.4
Amortization expense									113.2	112.1	109.6
EBITDA									386.3	414.5	232.5
Adjustments to reconcile to Adjusted EBITDA:
Restructuring expense									14.1	6.3	23.5
Amortization of inventory step-up									0.7	0.0	0.0
Acquisition and integration costs									1.9	12.1	4.1
Legal settlement									0.0	0.0	(10.8)
Foreign exchange (gain) loss on foreign denominated external and internal long-term debt									(31.9)	6.0	53.4
Debt refinancing costs									62.0	0.5	83.1
Pension plan settlement									0.0	0.0	10.5
Gain on sale of equity investment									0.0	(11.3)	0.0
Change in fair value of contingent consideration									(17.4)	(21.8)	3.4
Other, net									1.0	14.4	1.5
Adjusted EBITDA									$ 416.7	$ 420.7	$ 401.2