Income Taxes (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
U.S. federal				$ (12.4)	$ (71.9)	$ 27.1
Non-U.S.				14.4	3.7	(61.1)
State				0.5	(0.6)	3.3
Total current				2.5	(68.8)	(30.7)
Deferred:
U.S. federal				(82.1)	(117.4)	111.0
Non-U.S.				(12.8)	(15.0)	68.5
State				(2.1)	(5.9)	(1.4)
Total deferred				(97.0)	(138.3)	178.1
Income tax (benefit) provision	$ 7.9	$ 67.4	$ (22.7)	$ (94.5)	$ (207.1)	$ 147.4