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Related Party Transactions (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Related Party Transactions |  |
Other liabilities | $ 203.6 | $ 149.4
Non-controlling interests | 770.4 | 806.9
Prior Owner | Private Equity Investment Partnerships of Affiliate |  |
Related Party Transactions |  |
Other liabilities | 65.1 | 67.8
Non-controlling interests | 1.3 | 2.5
Affiliated Entity | Other Liabilities |  |
Related Party Transactions |  |
Contingent payment arrangements liability | $ 7.8 | $ 8.6

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