Quarterly Financial Information (Unaudited) (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
Effect of Fourth Quarter Events [Line Items]
Net Sales	$ 1,519.8	$ 1,581.6	$ 1,552.8	$ 1,505.9	$ 1,509.3	$ 1,531.8	$ 1,510.9	$ 1,477.4	$ 6,160.1	$ 6,029.4	$ 4,405.6
Gross Profit	272.3	266.4	287.8	266.1	232.7	258.3	237.5	223.9	1,092.6	952.4
Business Combinations, Shutdown and Other Special Charges and Gain on Sale of Assets, Net	13.6	8.2	9.9	6.2	7.4	(27.4)	8.6	26.3	37.9	14.9	31.1
Income from Operations	132.1	122.9	144.4	134.2	107.6	166.6	110.1	74.2	533.6	458.5	327.9
Net Income	50.3	$ 83.5	$ 104.4	$ 95.3	$ 75.3	$ 135.4	$ 81.2	$ 45.3	$ 333.5	$ 337.2	$ 576.4
Prior Period Adjustment To Reduce Amortization Expense
Effect of Fourth Quarter Events [Line Items]
Prior period adjustment to amortization of intangible assets	$ (7.0)