Condensed Consolidated Statements of Earnings - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Net sales	$ 1,413.3	$ 1,379.1	$ 4,289.3	$ 4,056.8
Cost of sales	772.7	728.0	2,340.3	2,139.8
Gross profit	640.6	651.1	1,949.0	1,917.0
Operating and administrative expenses	351.5	369.2	1,072.7	1,099.5
Gain on sale of property and equipment	(1.0)	0.0	(1.1)	(0.8)
Operating income	290.1	281.9	877.4	818.3
Interest income	0.1	0.1	0.3	0.3
Interest expense	(2.6)	(3.6)	(7.2)	(11.3)
Earnings before income taxes	287.6	278.4	870.5	807.3
Income tax expense	66.1	64.9	207.5	195.1
Net earnings	$ 221.5	$ 213.5	$ 663.0	$ 612.2
Basic net earnings per share (in dollars per share)	$ 0.39	$ 0.37	$ 1.16	$ 1.07
Diluted net earnings per share (in dollars per share)	$ 0.38	$ 0.37	$ 1.15	$ 1.07
Basic weighted average shares outstanding (in shares)	573,913,929	573,452,002	573,673,031	572,934,475
Diluted weighted average shares outstanding (in shares)	576,117,331	574,366,773	575,470,232	573,977,305