Condensed Consolidated Statements of Earnings - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 1,367.0	$ 1,309.3
Cost of sales	730.2	684.6
Gross profit	636.8	624.7
Operating and administrative expenses	365.9	363.6
Gain on sale of property and equipment	(0.4)	(0.3)
Operating income	271.3	261.4
Interest income	0.1	0.1
Interest expense	(2.2)	(4.0)
Earnings before income taxes	269.2	257.5
Income tax expense	66.6	63.4
Net earnings	$ 202.6	$ 194.1
Basic net earnings per share (in dollars per share)	$ 0.35	$ 0.34
Diluted net earnings per share (in dollars per share)	$ 0.35	$ 0.34
Basic weighted average shares outstanding (in shares)	573,904,156	572,172,602
Diluted weighted average shares outstanding (in shares)	575,318,830	572,993,962