Condensed Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Sales	$ 1,348.2	$ 518.0
Operating expenses:
Cost of goods sold	1,175.4	433.2
Selling and administration	88.1	47.0
Restructuring charges	92.8	1.2
Acquisition-related costs	10.2	10.4
Other operating income (expense)	10.9	(0.2)
Operating (loss) income	(7.4)	26.0
Earnings of non-consolidated affiliates	0.2	0.4
Interest expense	48.5	7.1
Interest income	0.3	0.3
Income (loss) before taxes	(55.4)	19.6
Income tax (benefit) provision	(17.5)	6.5
Net (loss) income	$ (37.9)	$ 13.1
Net (loss) income per common share:
Basic	$ (0.23)	$ 0.17
Diluted	(0.23)	0.17
Dividends per common share	$ 0.20	$ 0.20
Average common shares outstanding:
Basic	165.1	77.4
Diluted	165.1	78.5