Investments in Affiliated Companies (Balance Sheet, Affiliates) (Details 5) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Summarized balance sheet for all affiliated companies
Current assets	$ 203.6	$ 303.8
Noncurrent assets	5,015.9	4,417.5
Total assets	5,219.5	4,721.3
Current liabilities	525.5	827.8
Noncurrent liabilities	3,703.6	3,001.8
Shareholders’ equity	990.4	891.7
Total liabilities and shareholders' equity	$ 5,219.5	$ 4,721.3

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