Supplemental Guarantor Information - Consolidating Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Supplemental Guarantor Information [Line Items]
Net sales	$ 3,606.4	$ 3,256.0
Cost of sales	3,002.5	2,702.5
Gross profit	603.9	553.5
Selling and administrative expenses	362.7	347.4
Advertising expense	37.1	35.4
Income from operations	204.1	170.7
Interest expense, net	(37.7)	(39.7)
Net loss on extinguishments of long-term debt	0.0	(57.4)
Other (expense) income	(0.7)	0.9
Income before income taxes	165.7	74.5
Income tax (expense) benefit	(38.7)	(16.3)
Income (loss) before equity in earnings of subsidiaries	127.0	58.2
Equity in earnings of subsidiaries	0.0	0.0
Net income	127.0	58.2
Consolidating Adjustments
Supplemental Guarantor Information [Line Items]
Net sales	0.0	0.0
Cost of sales	0.0	0.0
Gross profit	0.0	0.0
Selling and administrative expenses	0.0	0.0
Advertising expense	0.0	0.0
Income from operations	0.0	0.0
Interest expense, net	0.0	0.0
Net loss on extinguishments of long-term debt		0.0
Other (expense) income	0.0	0.0
Income before income taxes	0.0	0.0
Income tax (expense) benefit	0.0	0.0
Income (loss) before equity in earnings of subsidiaries	0.0	0.0
Equity in earnings of subsidiaries	(305.0)	(187.1)
Net income	(305.0)	(187.1)
Parent Guarantor | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	0.0	0.0
Cost of sales	0.0	0.0
Gross profit	0.0	0.0
Selling and administrative expenses	0.0	0.0
Advertising expense	0.0	0.0
Income from operations	0.0	0.0
Interest expense, net	0.0	0.0
Net loss on extinguishments of long-term debt		0.0
Other (expense) income	0.0	0.0
Income before income taxes	0.0	0.0
Income tax (expense) benefit	(0.1)	0.0
Income (loss) before equity in earnings of subsidiaries	(0.1)	0.0
Equity in earnings of subsidiaries	127.1	58.2
Net income	127.0	58.2
Subsidiary Issuer | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	0.0	0.0
Cost of sales	0.0	0.0
Gross profit	0.0	0.0
Selling and administrative expenses	34.5	31.5
Advertising expense	0.0	0.0
Income from operations	(34.5)	(31.5)
Interest expense, net	(37.1)	(39.1)
Net loss on extinguishments of long-term debt		(57.4)
Other (expense) income	0.0	0.0
Income before income taxes	(71.6)	(128.0)
Income tax (expense) benefit	20.8	57.3
Income (loss) before equity in earnings of subsidiaries	(50.8)	(70.7)
Equity in earnings of subsidiaries	177.9	128.9
Net income	127.1	58.2
Guarantor Subsidiaries | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	3,123.4	2,886.3
Cost of sales	2,597.0	2,393.0
Gross profit	526.4	493.3
Selling and administrative expenses	272.4	269.8
Advertising expense	35.2	34.0
Income from operations	218.8	189.5
Interest expense, net	1.0	1.0
Net loss on extinguishments of long-term debt		0.0
Other (expense) income	0.4	0.2
Income before income taxes	220.2	190.7
Income tax (expense) benefit	(55.3)	(70.6)
Income (loss) before equity in earnings of subsidiaries	164.9	120.1
Equity in earnings of subsidiaries	0.0	0.0
Net income	164.9	120.1
Non-Guarantor Subsidiaries | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	483.0	369.7
Cost of sales	405.5	309.5
Gross profit	77.5	60.2
Selling and administrative expenses	55.8	46.1
Advertising expense	1.9	1.4
Income from operations	19.8	12.7
Interest expense, net	(1.6)	(1.6)
Net loss on extinguishments of long-term debt		0.0
Other (expense) income	(1.1)	0.7
Income before income taxes	17.1	11.8
Income tax (expense) benefit	(4.1)	(3.0)
Income (loss) before equity in earnings of subsidiaries	13.0	8.8
Equity in earnings of subsidiaries	0.0	0.0
Net income	13.0	8.8
Co-Issuer | Reportable Legal Entities
Supplemental Guarantor Information [Line Items]
Net sales	0.0	0.0
Cost of sales	0.0	0.0
Gross profit	0.0	0.0
Selling and administrative expenses	0.0	0.0
Advertising expense	0.0	0.0
Income from operations	0.0	0.0
Interest expense, net	0.0	0.0
Net loss on extinguishments of long-term debt		0.0
Other (expense) income	0.0	0.0
Income before income taxes	0.0	0.0
Income tax (expense) benefit	0.0	0.0
Income (loss) before equity in earnings of subsidiaries	0.0	0.0
Equity in earnings of subsidiaries	0.0	0.0
Net income	$ 0.0	$ 0.0