Deferred Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Deferred costs	$ 72.4	$ 72.0
Amortization expense for deferred costs	54.5	44.0	$ 34.1
Impairment loss	$ 0.0	$ 0.0	$ 0.0