Supplemental Guarantor Information - Consolidating Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Supplemental Guarantor Information [Line Items]
Net sales	$ 4,373.2	$ 3,933.2	$ 12,165.7	$ 11,080.8
Cost of sales	3,659.6	3,291.0	10,152.6	9,244.3
Gross profit	713.6	642.2	2,013.1	1,836.5
Selling and administrative expenses	390.7	351.9	1,134.8	1,062.8
Advertising expense	48.1	46.3	133.9	128.1
Income from operations	274.8	244.0	744.4	645.6
Interest expense, net	(36.6)	(37.8)	(111.5)	(113.4)
Net loss on extinguishments of long-term debt	0.0	0.0	0.0	(57.4)
Other income, net	0.2	0.7	1.0	1.9
Income before income taxes	238.4	206.9	633.9	476.7
Income tax (expense) benefit	(54.7)	(77.6)	(150.2)	(148.4)
Income (Loss) before equity in earnings (loss) of subsidiaries	183.7	129.3	483.7	328.3
Equity in earnings of subsidiaries	0.0	0.0	0.0	0.0
Net income	183.7	129.3	483.7	328.3
Consolidating Adjustments
Supplemental Guarantor Information [Line Items]
Net sales	0.0	0.0	0.0	0.0
Cost of sales	0.0	0.0	0.0	0.0
Gross profit	0.0	0.0	0.0	0.0
Selling and administrative expenses	0.0	0.0	0.0	0.0
Advertising expense	0.0	0.0	0.0	0.0
Income from operations	0.0	0.0	0.0	0.0
Interest expense, net	0.0	0.0	0.0	0.0
Net loss on extinguishments of long-term debt				0.0
Other income, net	0.0	0.0	0.0	0.0
Income before income taxes	0.0	0.0	0.0	0.0
Income tax (expense) benefit	0.0	0.0	0.0	0.0
Income (Loss) before equity in earnings (loss) of subsidiaries	0.0	0.0	0.0	0.0
Equity in earnings of subsidiaries	(416.9)	(301.7)	(1,119.7)	(808.8)
Net income	(416.9)	(301.7)	(1,119.7)	(808.8)
Parent Guarantor | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	0.0	0.0	0.0	0.0
Cost of sales	0.0	0.0	0.0	0.0
Gross profit	0.0	0.0	0.0	0.0
Selling and administrative expenses	0.0	0.0	0.0	0.0
Advertising expense	0.0	0.0	0.0	0.0
Income from operations	0.0	0.0	0.0	0.0
Interest expense, net	0.0	0.0	0.0	0.0
Net loss on extinguishments of long-term debt				0.0
Other income, net	0.0	0.0	0.0	0.0
Income before income taxes	0.0	0.0	0.0	0.0
Income tax (expense) benefit	(0.1)	0.0	(0.3)	0.0
Income (Loss) before equity in earnings (loss) of subsidiaries	(0.1)	0.0	(0.3)	0.0
Equity in earnings of subsidiaries	183.8	129.3	484.0	328.3
Net income	183.7	129.3	483.7	328.3
Subsidiary Issuer | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	0.0	0.0	0.0	0.0
Cost of sales	0.0	0.0	0.0	0.0
Gross profit	0.0	0.0	0.0	0.0
Selling and administrative expenses	33.7	31.8	103.3	95.8
Advertising expense	0.0	0.0	0.0	0.0
Income from operations	(33.7)	(31.8)	(103.3)	(95.8)
Interest expense, net	(36.1)	(37.3)	(109.9)	(111.8)
Net loss on extinguishments of long-term debt				(57.4)
Other income, net	0.0	(0.2)	0.0	0.0
Income before income taxes	(69.8)	(69.3)	(213.2)	(265.0)
Income tax (expense) benefit	20.5	26.2	61.5	112.8
Income (Loss) before equity in earnings (loss) of subsidiaries	(49.3)	(43.1)	(151.7)	(152.2)
Equity in earnings of subsidiaries	233.1	172.4	635.7	480.5
Net income	183.8	129.3	484.0	328.3
Guarantor Subsidiaries | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	3,921.6	3,552.1	10,743.7	9,966.3
Cost of sales	3,286.6	2,974.9	8,966.6	8,315.4
Gross profit	635.0	577.2	1,777.1	1,650.9
Selling and administrative expenses	299.8	271.8	861.8	826.4
Advertising expense	45.9	43.8	128.3	122.6
Income from operations	289.3	261.6	787.0	701.9
Interest expense, net	0.9	1.0	2.8	3.1
Net loss on extinguishments of long-term debt				0.0
Other income, net	0.1	0.3	0.6	0.4
Income before income taxes	290.3	262.9	790.4	705.4
Income tax (expense) benefit	(75.3)	(100.5)	(202.6)	(251.8)
Income (Loss) before equity in earnings (loss) of subsidiaries	215.0	162.4	587.8	453.6
Equity in earnings of subsidiaries	0.0	0.0	0.0	0.0
Net income	215.0	162.4	587.8	453.6
Non-Guarantor Subsidiaries | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	451.6	381.1	1,422.0	1,114.5
Cost of sales	373.0	316.1	1,186.0	928.9
Gross profit	78.6	65.0	236.0	185.6
Selling and administrative expenses	57.2	48.3	169.7	140.6
Advertising expense	2.2	2.5	5.6	5.5
Income from operations	19.2	14.2	60.7	39.5
Interest expense, net	(1.4)	(1.5)	(4.4)	(4.7)
Net loss on extinguishments of long-term debt				0.0
Other income, net	0.1	0.6	0.4	1.5
Income before income taxes	17.9	13.3	56.7	36.3
Income tax (expense) benefit	0.2	(3.3)	(8.8)	(9.4)
Income (Loss) before equity in earnings (loss) of subsidiaries	18.1	10.0	47.9	26.9
Equity in earnings of subsidiaries	0.0	0.0	0.0	0.0
Net income	18.1	10.0	47.9	26.9
Co-Issuer | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	0.0	0.0	0.0	0.0
Cost of sales	0.0	0.0	0.0	0.0
Gross profit	0.0	0.0	0.0	0.0
Selling and administrative expenses	0.0	0.0	0.0	0.0
Advertising expense	0.0	0.0	0.0	0.0
Income from operations	0.0	0.0	0.0	0.0
Interest expense, net	0.0	0.0	0.0	0.0
Net loss on extinguishments of long-term debt				0.0
Other income, net	0.0	0.0	0.0	0.0
Income before income taxes	0.0	0.0	0.0	0.0
Income tax (expense) benefit	0.0	0.0	0.0	0.0
Income (Loss) before equity in earnings (loss) of subsidiaries	0.0	0.0	0.0	0.0
Equity in earnings of subsidiaries	0.0	0.0	0.0	0.0
Net income	$ 0.0	$ 0.0	$ 0.0	$ 0.0