Commitments And Contingencies (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Undrawn capital and purchase commitments			$ 233.9	$ 185.6
Regulatory investigations fee	$ (4.9)	$ 0.0	$ 1.1