Consolidated Statements Of Operations (Unaudited) - USD ($) shares in Millions, $ 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	$ 4,907.7	$ 4,373.2	$ 13,495.5	$ 12,165.7
Cost of sales	4,091.2	3,659.6	11,233.1	10,152.6
Gross profit	816.5	713.6	2,262.4	2,013.1
Selling and administrative expenses	444.9	390.7	1,269.3	1,134.8
Advertising expense	51.0	48.1	143.3	133.9
Operating income	320.6	274.8	849.8	744.4
Interest expense, net	(42.3)	(36.6)	(121.1)	(111.5)
Other (expense) income, net	(17.4)	0.2	(15.0)	1.0
Income before income taxes	260.9	238.4	713.7	633.9
Income tax expense	(59.2)	(54.7)	(162.5)	(150.2)
Net income	$ 201.7	$ 183.7	$ 551.2	$ 483.7
Net income per common share:
Basic (in dollars per share)	$ 1.39	$ 1.22	$ 3.78	$ 3.19
Diluted (in dollars per share)	$ 1.37	$ 1.20	$ 3.72	$ 3.14
Weighted-average common shares outstanding:
Basic (in shares)	144.5	150.9	145.7	151.6
Diluted (in shares)	147.2	153.7	148.2	154.1