Change in Financial Statement due to adoption of Policy (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Item Effected [Line Items]
Net Cash Provided By Used In Operating Activities	$ (47.7)	$ 546.4
Net Cash Provided By Used In Financing Activities	$ 1,177.6	(640.4)
As Previously Reported [Member]
Item Effected [Line Items]
Net Cash Provided By Used In Operating Activities		528.8
Net Cash Provided By Used In Financing Activities		(622.8)
Adoption Adjustment [Member]
Item Effected [Line Items]
Net Cash Provided By Used In Operating Activities		17.6
Net Cash Provided By Used In Financing Activities		$ (17.6)