Supplementary Data Other Expense, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Expense, Net [Abstract]
Gain (Loss) on Disposition of Business	$ (19.9)	$ (3.2)	$ (43.2)	$ (11.8)
Other Expense, Net, Other	1.6	0.6	0.1	(1.1)
Other Nonoperating Income (Expense)	$ (21.5)	$ (3.8)	$ (43.3)	$ (10.7)