Goodwill - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Aug. 22, 2023	Dec. 31, 2022
Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 899.9	$ 900.2		$ 723.8
Additions	177.1
Operating Segments | Live and Historical Racing
Indefinite-lived Intangible Assets [Line Items]
Goodwill	376.2	376.3		280.3
Additions	95.9
Operating Segments | Wagering Services and Solutions
Indefinite-lived Intangible Assets [Line Items]
Goodwill	233.4	$ 233.6		$ 152.2
Additions	81.2
Exacta Systems
Indefinite-lived Intangible Assets [Line Items]
Goodwill	177.4		$ 177.4
Exacta Systems | Live and Historical Racing
Indefinite-lived Intangible Assets [Line Items]
Goodwill			96.0
Exacta Systems | Wagering Services and Solutions
Indefinite-lived Intangible Assets [Line Items]
Goodwill			$ 81.4
Exacta Systems | Operating Segments | Live and Historical Racing
Indefinite-lived Intangible Assets [Line Items]
Additions	96.0
Exacta Systems | Operating Segments | Wagering Services and Solutions
Indefinite-lived Intangible Assets [Line Items]
Additions	$ 81.4