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Investment in Unconsolidated Affiliate and Related Party Transactions Summarized Income Statement of Equity Method Investment (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Equity Method Investments and Joint Ventures [Abstract] |  |  |
Equity Method Investment, Summarized Financial Information, Revenue | $ 2,960.0 | $ 3,431.0 | $ 2,803.0
Equity Method Investment, Summarized Financial Information, Cost of Sales | 1,279.0 | 1,819.0 | 1,381.0
Equity Method Investment, Summarized Financial Information, Operating Income | 569.0 | 648.0 | 528.0
Net income | $ 360.0 | $ 485.3 | $ 400.3

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