Discontinued Operations and Assets and Liabilities Held for Sale (Assets and Liabilities Held For Sale) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]
Cash and cash equivalents	$ 0.0	$ 3.7
Held-for-sale
Disposal Group, Including Discontinued Operation, Assets, Current [Abstract]
Inventories	0.0	8.7
Property, Plant & Equipment (net)	22.6	52.0
Cash and cash equivalents	0.0	3.7
Other assets	0.0	1.2
Held for sale assets	22.6	65.6
Disposal Group, Including Discontinued Operation, Liabilities, Current [Abstract]
Accounts payable	0.0	8.6
Other liabilities	0.0	2.8
Held for sale liabilities	$ 0.0	$ 11.4