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Investments in Affiliated Companies (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Alpha Partners Leasing Limited [Domain] |  |  |  |
Equity Method Investment, Summarized Financial Information. Revenue. | $ 112.5 | $ 94.0 | $ 318.5 | $ 283.5
Equity Method Investment, Summarized Financial Information, Other Expenses | (95.9) | (75.1) | (271.0) | (227.7)
Equity Method Investment, Summarized Financial Information, Gains (Losses) | 10.0 | 6.8 | 48.2 | 33.1
RRPF Joint Ventures [Member] |  |  |  |
Equity Method Investment, Summarized Financial Information, Net Income (Loss) | $ 21.7 | $ 20.8 | $ 77.6 | $ 72.0

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