Revenue From Contracts With Customers - Contract Balances (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Contract assets	$ 7.1		$ 7.1		$ 6.3
Credit losses on contract assets	0.0	$ 0.0	0.0	$ 0.0
Contract liabilities	23.6		23.6		10.0
Revenue recognized	9.4	3.5	8.0	5.8
Deferred contract costs	38.2		38.2		$ 20.4
Amortization of deferred contract costs	$ 14.4	$ 6.6	$ 19.1	$ 11.2