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Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 | Mar. 31, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Related Party Transactions |  |  |  |  |  |
Other liabilities | $ 170.3 |  |  | $ 170.3 |  | $ 213.3
Non-controlling interests | 847.1 |  |  | 847.1 |  | 932.0
Imputed interest expense and contingent payment arrangements | 0.9 |  | $ 0.3 | (0.2) | $ (40.0) |
Prior Owner | Private Equity Investment Partnerships of Affiliate |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |
Other liabilities | 72.1 |  |  | 72.1 |  | 75.0
Non-controlling interests | 3.3 |  |  | 3.3 |  | 5.1
Affiliated Entity |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |
Imputed interest expense and contingent payment arrangements |  |  |  |  | $ 44.7 |
Affiliated Entity | Imputed interest expense and contingent payment arrangements |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |
Imputed interest expense and contingent payment arrangements |  | $ 2.8 |  |  |  |
Affiliated Entity | Other Liabilities |  |  |  |  |  |
Related Party Transactions |  |  |  |  |  |
Contingent payment arrangements liability | $ 8.2 |  |  | 8.2 |  | $ 10.2
Payments for contingent payment arrangements liabilities |  |  | $ 17.5 | $ 0.0 |  |

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