Consolidated Investment Products (Private Equity) (Details) (Private Equity Funds [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Private Equity Funds [Member]
Schedule of Investments [Line Items]
Fair Value	$ 410.0	$ 442.2
Unfunded Commitments	$ 196.3	$ 152.2

Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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