Segment Data - Schedule of adjusted EBITDA (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting [Abstract]
Net income (loss)	$ 1.9	$ (28.8)
Depreciation and amortization	26.7	32.5
Interest expense, net of interest income	52.3	58.7
Provision for income taxes	3.1	2.3
Unrealized loss on investments, net	0.7	1.0
Impairment of investments	6.5	0.0
Acquisition related costs	0.4	0.0
Cost savings initiatives	0.0	7.2
Other	4.6	5.2
Adjusted EBITDA	$ 96.2	$ 78.1