Amount of investment in equity method investee and investment in and advance to affiliate.

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Investments in Affiliated Companies (Future Debt Maturities) (Details 8) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Investments in Affiliated Companies	$ 512.6	$ 464.5	$ 441.0
2016	350.0
2017	600.0
2018	250.0
2019	250.0
2020	529.9
Thereafter	2,834.0
Total debt principal	4,813.9	4,473.1
RRPF Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
2016	432.3
2017	298.0
2018	342.6
2019	381.6
2020	168.1
Thereafter	2,189.1
Total debt principal	3,811.7
Rail North America [Member]
Schedule of Equity Method Investments [Line Items]
Investments in Affiliated Companies		$ 0.2	$ 6.8
Rail North America [Member] \| Adler Funding Llc [Member]
Schedule of Equity Method Investments [Line Items]
Investments in Affiliated Companies	$ 0.2