Business Segment Information (Summary of Operations by Reportable Segments) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Net revenues	$ 3,355.5	$ 3,017.6
Segment Adjusted EBITDA	508.2	504.0
Interest Expense	(56.0)	(60.7)
Depreciation and amortization	(77.3)	(76.0)
Restructuring and Related Cost, Incurred Cost	(1.3)	(10.3)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	6.5	0.0	$ 2.5
Unallocated corporate expense	(48.6)	(71.7)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	331.5	285.3
Americas [Member]
Net revenues	2,633.2	2,325.7
Segment Adjusted EBITDA	405.6	383.8
EMEA [Member]
Net revenues	441.3	443.9
Segment Adjusted EBITDA	59.1	76.7
Asia Pacific [Member]
Net revenues	281.0	248.0
Segment Adjusted EBITDA	$ 43.5	$ 43.5