Investments in Unconsolidated Affiliates - Summarized Financial Information (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020 USD ($) item	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) item	Jun. 30, 2019 USD ($)
Investments in Unconsolidated Affiliates - Summarized Information
Number of joint ventures \| item	1		1
Summarized Financial Information, Net Income
Sales	$ 225.4	$ 418.4	$ 547.5	$ 787.6
Gross profit	31.3	85.9	38.4	140.1
Net income	$ 20.1	$ 72.8	$ 11.8	$ 115.7

The amount of net income (loss) reported by an equity method investment of the entity.

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