CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended								12 Months Ended			74 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016
Income Statement [Abstract]
Sales	$ 1,385.7	$ 1,452.7	$ 1,364.0	$ 1,348.2	$ 1,267.4	$ 533.6	$ 535.4	$ 518.0	$ 5,550.6	$ 2,854.4	$ 2,241.2
Operating expenses:
Cost of goods sold	1,227.0	1,284.4	1,236.9	1,175.4	1,148.1	460.0	445.5	433.2	4,923.7	2,486.8	1,853.2
Selling and administration									323.2	186.3	166.1
Restructuring charges									112.9	2.7	15.7	$ 190.2
Acquisition-related costs									48.8	123.4	4.2
Other operating income									10.6	45.7	1.5
Operating income									152.6	100.9	203.5
Earnings of non-consolidated affiliates									1.7	1.7	1.7
Interest expense									191.9	97.0	43.8
Interest income									3.4	1.1	1.3
Income (loss) from continuing operations before taxes									(34.2)	6.7	162.7
Income tax (benefit) provision									(30.3)	8.1	57.7
Income (loss) from continuing operations									(3.9)	(1.4)	105.0
Income from discontinued operations, net									0.0	0.0	0.7
Net (loss) income	$ 17.5	$ 17.5	$ (1.0)	$ (37.9)	$ (62.7)	$ 5.9	$ 42.3	$ 13.1	$ (3.9)	$ (1.4)	$ 105.7
Basic (loss) income per common share:
Income (loss) from continuing operations									$ (0.02)	$ (0.01)	$ 1.33
Income from discontinued operations, net									0.00	0.00	0.01
Net (loss) income	$ 0.11	$ 0.11	$ (0.01)	$ (0.23)	$ (0.39)	$ 0.08	$ 0.55	$ 0.17	(0.02)	(0.01)	1.34
Diluted (loss) income per common share:
Income (loss) from continuing operations									(0.02)	(0.01)	1.32
Income from discontinued operations, net									0.00	0.00	0.01
Net (loss) income	$ 0.10	$ 0.11	$ (0.01)	$ (0.23)	$ (0.39)	$ 0.08	$ 0.54	$ 0.17	$ (0.02)	$ (0.01)	$ 1.33
Average common shares outstanding:
Basic									165.2	103.4	78.6
Diluted									165.2	103.4	79.7