Other Balance Sheet Items - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 78.9	$ 87.2
Allowance for doubtful accounts	(4.9)	(5.7)
Accounts receivable, net	74.0	81.5
Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	13.2	12.5
Simulcast and online wagering receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	45.0	54.1
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 20.7	$ 20.6