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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, 2021 | Jun. 30, 2020
Change in Equity Method Investments in Affiliates [Roll Forward] |  |
Balance, as of December 31, 2020 | $ 2,074.8 |
Distributions of earnings | (226.6) | $ (160.2)
Balance, as of June 30, 2021 | 2,119.1 |
Equity Method Investee |  |
Change in Equity Method Investments in Affiliates [Roll Forward] |  |
Balance, as of December 31, 2020 | 2,074.8 |
Investments in Affiliates | 144.2 |
Earnings | 153.7 |
Intangible amortization and impairments | (64.5) |
Distributions of earnings | (226.6) |
Foreign currency translation | 28.4 |
Other | 9.1 |
Balance, as of June 30, 2021 | $ 2,119.1 |

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