Other Charges , Net Other Charges, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Income and Expenses [Abstract]
Non-service pension costs (benefits)	$ (3.0)	$ (1.2)	$ (5.9)	$ (2.3)