Contract Assets and Deferred Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Contract assets - current	$ 26.3		$ 26.3		$ 42.0
Contract assets - long-term	13.6		13.6		17.4
Deferred revenue - current	(206.2)		(206.2)		(253.2)
Deferred revenue - long-term	(127.2)		(127.2)		$ (150.7)
Revenue recognized that was included in deferred revenue at the beginning of the period	$ 40.7	$ 47.5	$ 185.5	$ 210.4