Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Reserves and accrued expenses	$ 195.8	$ 175.0
Net operating loss carryforwards	101.5	153.6
R&D credits	12.5	26.2
Interest expense limitation carryforwards	10.9	63.0
Outside basis differences on assets held for sale	57.5	0.0
Lease liability	52.6	56.3
Valuation allowance	(44.4)	(37.7)
Total deferred tax assets	386.4	436.4
Deferred tax liabilities:
Reserves and accrued expenses	16.1	21.5
Amortizable intangible assets	1,670.2	1,762.8
Plant and equipment	3.8	7.4
Accrued tax on unremitted foreign earnings	24.7	18.6
ROU asset	50.0	54.4
Total deferred tax liabilities	$ 1,764.8	$ 1,864.7