Condensed Consolidating Financial Statements (Statements of Operations and Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Condensed Consolidating Statements of Operations
Net sales	$ 1,019.2	$ 992.5	$ 1,734.4	$ 1,678.3
Cost of goods sold	704.2	709.1	1,235.8	1,231.9
Gross profit	315.0	283.4	498.6	446.4
Operating Expenses:
Selling, general and administrative expenses	159.4	152.9	299.7	286.2
Losses and other expenses, net	0.4	3.3	4.7	8.9
Restructuring charges	0.8	1.8	0.6	2.1
Income from equity method investments	(6.3)	(5.5)	(10.8)	(8.8)
Operating income	160.7	130.9	204.4	158.0
Interest expense, net	6.8	6.4	12.7	12.2
Other expense, net	(0.2)	0.0	(0.3)	0.0
Income from continuing operations before income taxes	154.1	124.5	192.0	145.8
Provision for income taxes	42.9	42.9	55.9	50.2
Income from continuing operations	111.2	81.6	136.1	95.6
Loss from discontinued operations	0.5	0.4	0.5	0.5
Net income	110.7	81.2	135.6	95.1
Other comprehensive income (loss), net of tax	4.1	(0.2)	18.1	(25.4)
Comprehensive income	114.8	81.0	153.7	69.7
Eliminations [Member]
Condensed Consolidating Statements of Operations
Net sales	(48.7)	(53.8)	(91.1)	(97.9)
Cost of goods sold	(48.7)	(53.2)	(89.1)	(96.9)
Gross profit	0.0	(0.6)	(2.0)	(1.0)
Operating Expenses:
Selling, general and administrative expenses	0.0	0.0	0.0	0.0
Losses and other expenses, net	(0.1)	0.0	0.0	(0.1)
Restructuring charges	0.0	0.0	0.0	0.0
Income from equity method investments	123.9	84.4	151.4	99.0
Operating income	(123.8)	(85.0)	(153.4)	(99.9)
Interest expense, net	0.0	0.0	0.0	0.0
Other expense, net	0.0	0.0	0.0
Income from continuing operations before income taxes	(123.8)	(85.0)	(153.4)	(99.9)
Provision for income taxes	0.1	(0.3)	(0.7)	(0.4)
Income from continuing operations	(123.9)	(84.7)	(152.7)	(99.5)
Loss from discontinued operations	0.0	0.0	0.0	0.0
Net income	(123.9)	(84.7)	(152.7)	(99.5)
Other comprehensive income (loss), net of tax	0.8	0.3	1.8	(1.4)
Comprehensive income	(123.1)	(84.4)	(150.9)	(100.9)
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	0.0	0.4	(0.6)	0.5
Restructuring charges	0.0	0.0	0.0	0.0
Income from equity method investments	(115.5)	(85.6)	(143.5)	(103.1)
Operating income	115.5	85.2	144.1	102.6
Interest expense, net	6.3	6.2	11.7	11.7
Other expense, net	0.0	0.0	0.0
Income from continuing operations before income taxes	109.2	79.0	132.4	90.9
Provision for income taxes	(1.5)	(2.2)	(3.1)	(4.2)
Income from continuing operations	110.7	81.2	135.5	95.1
Loss from discontinued operations	0.0	0.0	0.0	0.0
Net income	110.7	81.2	135.5	95.1
Other comprehensive income (loss), net of tax	0.3	0.3	4.9	1.3
Comprehensive income	111.0	81.5	140.4	96.4
Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Operations
Net sales	884.5	864.6	1,498.3	1,440.7
Cost of goods sold	611.7	617.2	1,072.4	1,060.8
Gross profit	272.8	247.4	425.9	379.9
Operating Expenses:
Selling, general and administrative expenses	139.9	130.1	258.6	238.0
Losses and other expenses, net	0.7	1.1	3.1	5.0
Restructuring charges	1.0	(0.5)	1.0	(0.4)
Income from equity method investments	(9.5)	0.2	(9.5)	2.6
Operating income	140.7	116.5	172.7	134.7
Interest expense, net	(0.5)	(0.6)	(1.0)	(1.1)
Other expense, net	0.0	0.0	0.0
Income from continuing operations before income taxes	141.2	117.1	173.7	135.8
Provision for income taxes	34.8	40.4	46.8	48.2
Income from continuing operations	106.4	76.7	126.9	87.6
Loss from discontinued operations	0.0	0.0	0.0	0.0
Net income	106.4	76.7	126.9	87.6
Other comprehensive income (loss), net of tax	0.3	(1.3)	2.4	(5.2)
Comprehensive income	106.7	75.4	129.3	82.4
Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Statements of Operations
Net sales	183.4	181.7	327.2	335.5
Cost of goods sold	141.2	145.1	252.5	268.0
Gross profit	42.2	36.6	74.7	67.5
Operating Expenses:
Selling, general and administrative expenses	19.5	22.8	41.1	48.2
Losses and other expenses, net	(0.2)	1.8	2.2	3.5
Restructuring charges	(0.2)	2.3	(0.4)	2.5
Income from equity method investments	(5.2)	(4.5)	(9.2)	(7.3)
Operating income	28.3	14.2	41.0	20.6
Interest expense, net	1.0	0.8	2.0	1.6
Other expense, net	(0.2)	0.0	(0.3)
Income from continuing operations before income taxes	27.5	13.4	39.3	19.0
Provision for income taxes	9.5	5.0	12.9	6.6
Income from continuing operations	18.0	8.4	26.4	12.4
Loss from discontinued operations	0.5	0.4	0.5	0.5
Net income	17.5	8.0	25.9	11.9
Other comprehensive income (loss), net of tax	2.7	0.5	9.0	(20.1)
Comprehensive income	$ 20.2	$ 8.5	$ 34.9	$ (8.2)