Income Taxes (Summary of Operating Loss Carryforwards - U.S and Non-U.S) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Non-U.S. [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 21.4	$ 10.6
Operating loss carryforwards, not subject to valuation allowances	11.7	2.0
Non-U.S. [Member] | Subject to Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	6.8	5.5
Non-U.S. [Member] | No Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	14.6	5.1
U.S [Member] | Subject to Expiration Date [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 0.8	$ 1.0