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Equity Method Investments in Affiliates - Change in Equity Method Investments (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Change in Equity Method Investments in Affiliates [Roll Forward] |  |
Balance, as of December 31, 2020 | $ 2,074.8 |
Distributions of earnings | (157.9) | $ (124.4)
Balance, as of March 31, 2021 | 1,999.5 |
Equity Method Investee |  |
Change in Equity Method Investments in Affiliates [Roll Forward] |  |
Balance, as of December 31, 2020 | 2,074.8 |
Earnings | 86.9 |
Intangible amortization and impairments | (35.2) |
Distributions of earnings | (157.9) |
Foreign currency translation | 23.0 |
Investments in Affiliates | 11.7 |
Other | (3.8) |
Balance, as of March 31, 2021 | $ 1,999.5 |

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