Other Charges , Net Other Charges, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Non-service pension costs (benefits)	$ (3.1)	$ (1.2)	$ (9.0)	$ (3.5)