Revenue Recognition (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue from Contract with Customer [Abstract]
Primary term of contract			5 years
Performance obligations satisfied in prior period, amount recognized	$ 0.0	$ 1.8	$ 2.1	$ 1.8
Revenue recognized in contract liability	0.2	$ 0.2	0.7	$ 0.7
Contract assets recognized	$ 0.0		$ 0.0