Investments in Affiliated Companies (Balance Sheet, Affiliates) (Details 5) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Identifiable assets	$ 11,326.0	$ 10,072.0	$ 9,541.7
Shareholders’ equity	2,273.0	2,029.6	$ 2,019.2
Total Liabilities and Shareholders’ Equity	11,326.0	10,072.0
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule of Equity Method Investments [Line Items]
Current assets	495.9	490.7
Noncurrent assets	4,108.3	4,186.1
Identifiable assets	4,604.2	4,676.8
Current liabilities	351.5	631.8
Liabilities, Noncurrent	3,024.1	2,916.3
Shareholders’ equity	1,228.6	1,128.7
Total Liabilities and Shareholders’ Equity	$ 4,604.2	$ 4,676.8