Investments in Affiliated Companies (Operating Results, Affiliates) (Details 4) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Revenues	$ 1,273.0	$ 1,257.4	$ 1,209.2
Net Income	155.9	143.1	151.3
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Revenues	417.7	407.4	491.0
Gains on sales of assets	22.9	79.5	115.7
Net Income	$ 73.9	$ 5.0	$ 146.1