Revenue and Contracts with Customers (Revenue from External Customers by Geographic Areas) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue	$ 99.1	$ 62.4	$ 134.4	$ 118.0
Product [Member]
Revenue	85.5	45.2	103.2	83.3
Product [Member] | United States
Revenue	7.3	45.2	19.9	54.8
Product [Member] | Other Foreign
Revenue	$ 78.2	$ 0.0	$ 83.3	$ 28.5