Investments in and Advances to Affiliates Results for affiliates (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Due to affiliates	$ 0.1	$ 0.4
Net sales	1,892.5	1,934.8	$ 2,085.2
Net income (loss)	$ (88.1)	$ (75.4)	$ 177.1