Contingent Consideration - Changes in Contingent Consideration Liabilities (Details) - Contingent cash and other consideration payable to non-Carlyle personnel - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Loss Contingency Accrual [Roll Forward]
Balance, beginning of period	$ 29.6	$ 37.6
Change in carrying value	3.3	17.8
Payments	(0.4)	(22.9)
Balance, end of period	$ 32.5	$ 32.5