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Equity Method Investments in Affiliates - Change in Equity Method Investments (Details) - USD ($) $ in Millions | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019
Change in Equity Method Investments in Affiliates [Roll Forward] |  |
Balance, as of December 31, 2019 | $ 2,195.6 |
Distributions of earnings | (160.2) | $ (155.9)
Balance, as of June 30, 2020 | 1,991.0 |
Equity Method Investee |  |
Change in Equity Method Investments in Affiliates [Roll Forward] |  |
Balance, as of December 31, 2019 | 2,195.6 |
Earnings | 120.4 |
Intangible amortization and impairments | (216.2) |
Distributions of earnings | (160.2) |
Foreign currency translation | (23.2) |
Investments in Affiliates | 86.5 |
Other | (11.9) |
Balance, as of June 30, 2020 | $ 1,991.0 |

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