Supplemental Balance Sheet Information - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 96.4	$ 103.6
Allowance for credit losses	(6.7)	(4.9)
Accounts receivable, net	89.7	98.7
Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	36.0	37.3
Simulcast and online wagering receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	35.3	40.2
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 25.1	$ 26.1