Reportable Segments Earnings from Equity Method Investments Included in Non-Operating Income and Expense - Level 4 Tag - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Earnings from equity method investments	$ 2.1	$ 3.3	$ 4.6	$ 7.1
U.S. Markets
Segment Reporting Information [Line Items]
Earnings from equity method investments	0.6	0.6	1.3	1.3
International
Segment Reporting Information [Line Items]
Earnings from equity method investments	$ 1.4	$ 2.7	$ 3.3	$ 5.8