Segment Information - Reconciliation of Adjusted EBITDA to Net Income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting [Abstract]
Net income attributable to common stockholders	$ 82.3	$ 8.6
Add (subtract):
Income from discontinued operations, net of tax	0.0	(0.2)
Income tax expense	31.1	4.1
Interest expense, net	12.9	16.7
Depreciation expense	9.4	10.5
Amortization expense	29.7	29.4
EBITDA	165.4	69.1
Adjustments to reconcile to Adjusted EBITDA:
Amortization of inventory step-up	0.0	1.4
Restructuring expense	2.3	1.0
Acquisition and integration (income) expense	(2.7)	6.6
Foreign exchange (gain) loss on internal debt	(28.0)	29.1
Other, net	0.9	2.9
Adjusted EBITDA	$ 137.9	$ 110.1