Reportable Segments Earnings from Equity Method Investments Included in Non-Operating Income and Expense (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Earnings from equity method investments	$ 2.6	$ 3.8
U.S. Markets
Segment Reporting Information [Line Items]
Earnings from equity method investments	0.6	0.6
International
Segment Reporting Information [Line Items]
Earnings from equity method investments	$ 1.9	$ 3.2

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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