Investments in Affiliated Companies (Future Debt Maturities) (Details 8) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Investments in Affiliated Companies	$ 575.1	$ 588.4	$ 584.7
2016	500.0
2017	519.5
2018	514.1
2019	454.9
2020	417.8
Thereafter	4,085.9
Total debt principal	6,492.2	$ 5,930.0
RRPF Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
2016	506.9
2017	164.1
2018	210.6
2019	465.6
2020	317.9
Thereafter	1,212.0
Total debt principal	$ 2,877.1
Rail North America [Member]
Schedule of Equity Method Investments [Line Items]
Investments in Affiliated Companies			$ 0.0