Condensed Consolidating Financial Statements (Statements of Operations and Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Condensed Consolidating Statements of Operations
Net sales	$ 1,010.0	$ 955.0	$ 2,744.4	$ 2,633.3
Cost of goods sold	699.7	681.6	1,935.5	1,913.5
Gross profit	310.3	273.4	808.9	719.8
Operating Expenses:
Selling, general and administrative expenses	156.5	143.8	456.2	430.0
Losses and other expenses, net	0.7	6.0	5.5	14.9
Restructuring charges (gains)	(0.6)	0.4	(1.2)	(1.8)
Income from equity method investments	(4.4)	(3.0)	(15.3)	(11.8)
Operating income	156.9	127.0	361.3	284.9
Interest expense, net	7.0	5.7	19.6	17.9
Other expense, net	0.0	(0.7)	(0.2)	(0.7)
Income from continuing operations before income taxes	149.9	122.0	341.9	267.7
Provision for income taxes	48.2	41.7	104.0	91.9
Income from continuing operations	101.7	80.3	237.9	175.8
Loss from discontinued operations	0.0	0.0	0.6	0.5
Net income	101.7	80.3	237.3	175.3
Other comprehensive income (loss), net of tax	(0.4)	(30.9)	17.7	(56.3)
Comprehensive income	101.3	49.4	255.0	119.0
Eliminations [Member]
Condensed Consolidating Statements of Operations
Net sales	(47.4)	(58.1)	(138.5)	(156.0)
Cost of goods sold	(47.4)	(58.5)	(136.4)	(155.4)
Gross profit	0.0	0.4	(2.1)	(0.6)
Operating Expenses:
Selling, general and administrative expenses	0.0	0.0	0.0	0.0
Losses and other expenses, net	0.0	0.0	(0.1)	(0.1)
Restructuring charges (gains)	0.0	0.0	0.0	0.0
Income from equity method investments	113.8	86.0	265.1	185.0
Operating income	(113.8)	(85.6)	(267.1)	(185.5)
Interest expense, net	0.0	0.0	0.0	0.0
Other expense, net	0.0	0.0	0.0	0.0
Income from continuing operations before income taxes	(113.8)	(85.6)	(267.1)	(185.5)
Provision for income taxes	0.0	0.2	(0.7)	(0.2)
Income from continuing operations	(113.8)	(85.8)	(266.4)	(185.3)
Loss from discontinued operations	0.0	0.0	0.0	0.0
Net income	(113.8)	(85.8)	(266.4)	(185.3)
Other comprehensive income (loss), net of tax	(0.4)	(1.8)	1.3	(3.2)
Comprehensive income	(114.2)	(87.6)	(265.1)	(188.5)
Parent [Member]
Condensed Consolidating Statements of Operations
Net sales	0.0	0.0	0.0	0.0
Cost of goods sold	0.0	0.0	0.0	0.0
Gross profit	0.0	0.0	0.0	0.0
Operating Expenses:
Selling, general and administrative expenses	0.0	0.0	0.0	0.0
Losses and other expenses, net	(1.1)	0.6	(1.7)	1.1
Restructuring charges (gains)	0.0	0.0	0.0	0.0
Income from equity method investments	(105.0)	(84.2)	(248.5)	(187.2)
Operating income	106.1	83.6	250.2	186.1
Interest expense, net	6.1	5.4	17.7	17.1
Other expense, net	0.0	0.0	0.0	0.0
Income from continuing operations before income taxes	100.0	78.2	232.5	169.0
Provision for income taxes	(1.7)	(2.1)	(4.9)	(6.3)
Income from continuing operations	101.7	80.3	237.4	175.3
Loss from discontinued operations	0.0	0.0	0.0	0.0
Net income	101.7	80.3	237.4	175.3
Other comprehensive income (loss), net of tax	2.7	(4.3)	7.7	(2.9)
Comprehensive income	104.4	76.0	245.1	172.4
Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Operations
Net sales	870.5	827.9	2,368.8	2,268.6
Cost of goods sold	603.4	589.9	1,675.6	1,650.7
Gross profit	267.1	238.0	693.2	617.9
Operating Expenses:
Selling, general and administrative expenses	135.9	124.0	394.6	362.0
Losses and other expenses, net	1.1	2.7	4.3	7.7
Restructuring charges (gains)	(0.5)	0.2	(1.5)	0.5
Income from equity method investments	(10.0)	(2.7)	(19.5)	(0.3)
Operating income	139.6	114.2	312.3	249.0
Interest expense, net	(0.5)	(0.4)	(1.5)	(1.5)
Other expense, net	0.0	0.0	0.0	0.0
Income from continuing operations before income taxes	140.1	114.6	313.8	250.5
Provision for income taxes	42.3	39.0	89.1	87.2
Income from continuing operations	97.8	75.6	224.7	163.3
Loss from discontinued operations	0.0	0.0	0.0	0.0
Net income	97.8	75.6	224.7	163.3
Other comprehensive income (loss), net of tax	(0.4)	(8.6)	2.0	(13.8)
Comprehensive income	97.4	67.0	226.7	149.5
Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Operations
Net sales	186.9	185.2	514.1	520.7
Cost of goods sold	143.7	150.2	396.3	418.2
Gross profit	43.2	35.0	117.8	102.5
Operating Expenses:
Selling, general and administrative expenses	20.6	19.8	61.6	68.0
Losses and other expenses, net	0.7	2.7	3.0	6.2
Restructuring charges (gains)	(0.1)	0.2	(0.3)	(2.3)
Income from equity method investments	(3.2)	(2.1)	(12.4)	(9.3)
Operating income	25.0	14.8	65.9	35.3
Interest expense, net	1.4	0.7	3.4	2.3
Other expense, net	0.0	0.7	(0.2)	0.7
Income from continuing operations before income taxes	23.6	14.8	62.7	33.7
Provision for income taxes	7.6	4.6	20.5	11.2
Income from continuing operations	16.0	10.2	42.2	22.5
Loss from discontinued operations	0.0	0.0	0.6	0.5
Net income	16.0	10.2	41.6	22.0
Other comprehensive income (loss), net of tax	(2.3)	(16.2)	6.7	(36.4)
Comprehensive income	$ 13.7	$ (6.0)	$ 48.3	$ (14.4)