Supplemental Guarantor Information - Consolidating Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Supplemental Guarantor Information [Line Items]
Net sales	$ 4,074.8	$ 4,373.2	$ 4,186.1	$ 3,606.4	$ 3,752.1	$ 3,933.2	$ 3,891.7	$ 3,256.0	$ 16,240.5	$ 14,832.9	$ 13,672.7
Cost of sales									13,533.6	12,382.7	11,344.4
Gross profit	693.8	713.6	695.6	603.9	613.7	642.2	640.8	553.5	2,706.9	2,450.2	2,328.3
Selling and administrative expenses									1,537.1	1,410.0	1,345.4
Advertising expense									182.5	173.7	162.9
Operating income	242.9	274.8	265.5	204.1	221.1	244.0	230.8	170.7	987.3	866.5	820.0
Interest (expense) income, net									(148.6)	(150.5)	(146.5)
Net loss on extinguishments of long-term debt									0.0	(57.4)	(2.1)
Other income, net									1.8	2.1	1.8
Income before income taxes									840.5	660.7	673.2
Income tax expense									(197.5)	(137.6)	(248.1)
Income (loss) before equity in earnings of subsidiaries									643.0	523.1	425.1
Equity in earnings of subsidiaries									0.0	0.0	0.0
Net income	$ 159.3	$ 183.7	$ 173.0	$ 127.0	$ 194.8	$ 129.3	$ 140.9	$ 58.2	643.0	523.1	425.1
Reportable Legal Entities | Parent Guarantor
Supplemental Guarantor Information [Line Items]
Net sales									0.0	0.0	0.0
Cost of sales									0.0	0.0	0.0
Gross profit									0.0	0.0	0.0
Selling and administrative expenses									0.0	0.0	0.0
Advertising expense									0.0	0.0	0.0
Operating income									0.0	0.0	0.0
Interest (expense) income, net									0.0	0.0	0.0
Net loss on extinguishments of long-term debt										0.0	0.0
Other income, net									0.0	0.0	0.0
Income before income taxes									0.0	0.0	0.0
Income tax expense									(0.4)	(0.9)	0.0
Income (loss) before equity in earnings of subsidiaries									(0.4)	(0.9)	0.0
Equity in earnings of subsidiaries									643.4	524.0	425.1
Net income									643.0	523.1	425.1
Reportable Legal Entities | Subsidiary Issuer
Supplemental Guarantor Information [Line Items]
Net sales									0.0	0.0	0.0
Cost of sales									0.0	0.0	0.0
Gross profit									0.0	0.0	0.0
Selling and administrative expenses									138.3	127.2	114.9
Advertising expense									0.0	0.0	0.0
Operating income									(138.3)	(127.2)	(114.9)
Interest (expense) income, net									(146.7)	(148.3)	(145.8)
Net loss on extinguishments of long-term debt										(57.4)	(2.1)
Other income, net									(0.2)	(0.1)	0.2
Income before income taxes									(285.2)	(333.0)	(262.6)
Income tax expense									67.0	149.9	79.8
Income (loss) before equity in earnings of subsidiaries									(218.2)	(183.1)	(182.8)
Equity in earnings of subsidiaries									861.6	707.1	607.9
Net income									643.4	524.0	425.1
Reportable Legal Entities | Guarantor Subsidiaries
Supplemental Guarantor Information [Line Items]
Net sales									14,356.8	13,299.8	12,330.4
Cost of sales									11,962.7	11,103.5	10,225.5
Gross profit									2,394.1	2,196.3	2,104.9
Selling and administrative expenses									1,176.8	1,093.3	1,057.4
Advertising expense									173.9	166.4	157.2
Operating income									1,043.4	936.6	890.3
Interest (expense) income, net									3.5	4.1	6.7
Net loss on extinguishments of long-term debt										0.0	0.0
Other income, net									0.7	0.7	1.0
Income before income taxes									1,047.6	941.4	898.0
Income tax expense									(249.8)	(270.2)	(319.8)
Income (loss) before equity in earnings of subsidiaries									797.8	671.2	578.2
Equity in earnings of subsidiaries									0.0	0.0	0.0
Net income									797.8	671.2	578.2
Reportable Legal Entities | Non-Guarantor Subsidiaries
Supplemental Guarantor Information [Line Items]
Net sales									1,883.7	1,533.1	1,342.3
Cost of sales									1,570.9	1,279.2	1,118.9
Gross profit									312.8	253.9	223.4
Selling and administrative expenses									222.0	189.5	173.1
Advertising expense									8.6	7.3	5.7
Operating income									82.2	57.1	44.6
Interest (expense) income, net									(5.4)	(6.3)	(7.4)
Net loss on extinguishments of long-term debt										0.0	0.0
Other income, net									1.3	1.5	0.6
Income before income taxes									78.1	52.3	37.8
Income tax expense									(14.3)	(16.4)	(8.1)
Income (loss) before equity in earnings of subsidiaries									63.8	35.9	29.7
Equity in earnings of subsidiaries									0.0	0.0	0.0
Net income									63.8	35.9	29.7
Reportable Legal Entities | Affiliated Entity
Supplemental Guarantor Information [Line Items]
Net sales									0.0	0.0	0.0
Cost of sales									0.0	0.0	0.0
Gross profit									0.0	0.0	0.0
Selling and administrative expenses									0.0	0.0	0.0
Advertising expense									0.0	0.0	0.0
Operating income									0.0	0.0	0.0
Interest (expense) income, net									0.0	0.0	0.0
Net loss on extinguishments of long-term debt										0.0	0.0
Other income, net									0.0	0.0	0.0
Income before income taxes									0.0	0.0	0.0
Income tax expense									0.0	0.0	0.0
Income (loss) before equity in earnings of subsidiaries									0.0	0.0	0.0
Equity in earnings of subsidiaries									0.0	0.0	0.0
Net income									0.0	0.0	0.0
Consolidating Adjustments
Supplemental Guarantor Information [Line Items]
Net sales									0.0	0.0	0.0
Cost of sales									0.0	0.0	0.0
Gross profit									0.0	0.0	0.0
Selling and administrative expenses									0.0	0.0	0.0
Advertising expense									0.0	0.0	0.0
Operating income									0.0	0.0	0.0
Interest (expense) income, net									0.0	0.0	0.0
Net loss on extinguishments of long-term debt										0.0	0.0
Other income, net									0.0	0.0	0.0
Income before income taxes									0.0	0.0	0.0
Income tax expense									0.0	0.0	0.0
Income (loss) before equity in earnings of subsidiaries									0.0	0.0	0.0
Equity in earnings of subsidiaries									(1,505.0)	(1,231.1)	(1,033.0)
Net income									$ (1,505.0)	$ (1,231.1)	$ (1,033.0)