Condensed Consolidated Statements of Earnings - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net sales	$ 1,379.1	$ 1,279.8	$ 4,056.8	$ 3,733.5
Cost of sales	728.0	664.0	2,139.8	1,922.4
Gross profit	651.1	615.8	1,917.0	1,811.1
Operating and administrative expenses	369.2	353.8	1,099.5	1,045.8
Gain on sale of property and equipment	0.0	(0.3)	(0.8)	(0.5)
Operating income	281.9	262.3	818.3	765.8
Interest income	0.1	0.1	0.3	0.3
Interest expense	(3.6)	(3.0)	(11.3)	(8.9)
Earnings before income taxes	278.4	259.4	807.3	757.2
Income tax expense	64.9	61.8	195.1	174.1
Net earnings	$ 213.5	$ 197.6	$ 612.2	$ 583.1
Basic net earnings per share (in dollars per share)	$ 0.37	$ 0.34	$ 1.07	$ 1.02
Diluted net earnings per share (in dollars per share)	$ 0.37	$ 0.34	$ 1.07	$ 1.01
Basic weighted average shares outstanding (in shares)	573,452,002	574,013,820	572,934,475	574,526,758
Diluted weighted average shares outstanding (in shares)	574,366,773	574,526,444	573,977,305	574,916,816