Organization and Summary of Accounting Policies - Schedule of Non-Controlling Interests - Redeemable (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Non-Controlling Interests - Redeemable [Roll Forward]
Beginning balance	$ 321.0	$ 326.6
Net income attributable to non-controlling interests—redeemable	5.5	7.6
Acquisition and disposal of shares of non-controlling interests, net—redeemable	(1.6)	(9.3)
Distributions to non-controlling interest—redeemable holders	(9.1)	(10.3)
Ending balance	$ 315.8	$ 314.6