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Investments in Affiliates Equity Investee Summarized Financial Information (Details 2) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity Method Investment, Summarized Financial Information [Abstract]
Revenue	$ 69.6	$ 131.5	$ 356.4	$ 386.1	$ 293.9
Gross profit	23.0	7.0	68.3	93.2	103.7
Net income (loss)	$ 7.8	$ (24.6)	(9.8)	10.8	$ 20.1
Current assets			89.3	211.8
Noncurrent assets			66.9	879.1
Current liabilities			14.5	157.1
Noncurrent liabilities			$ 33.8	$ 516.6

The amount of current liabilities reported by an equity method investment of the entity.

The amount of net income (loss) reported by an equity method investment of the entity.

The amount of noncurrent assets reported by an equity method investment of the entity.

The amount of noncurrent liabilities reported by an equity method investment of the entity.