Supplemental Balance Sheet Information - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 124.1	$ 103.6
Allowance for credit losses	(5.7)	(4.9)
Accounts receivable, net	118.4	98.7
Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	49.1	37.3
Simulcast and online wagering receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	50.0	40.2
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 25.0	$ 26.1