Commitments and Contingencies (Cost/Income Asbestos Related Claims after Recoveries) (Details) - Asbestos Issue [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Liability for Asbestos and Environmental Claims, Net, Incurred Loss	$ 0.0	$ 39.7	$ 3.6	$ 38.3
Continuing Operations [Member]
Liability for Asbestos and Environmental Claims, Net, Incurred Loss	0.0	3.7	14.8	7.8
Discontinued Operations [Member]
Liability for Asbestos and Environmental Claims, Net, Incurred Loss	$ 0.0	$ 36.0	$ (11.2)	$ 30.5