Consolidated Investment Products (Private Equity) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Private Equity Fund Of Funds [Member]
Schedule of Investments [Line Items]
Weighted Average Remaining Term
Private Equity Funds [Member]
Schedule of Investments [Line Items]
Fair Value		$ 368.2
Unfunded Commitments	$ 52.5	$ 218.1
Weighted Average Remaining Term	6 years 8 months	2 years 9 months