Significant Accounting Policies - Concentration of Credit Risk and Receivables (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision for credit losses	$ (8.0)	$ (8.8)
Accounts receivable, net	195.0	96.4
Markers and returned checks
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	15.1	14.8
Credit card and other advances to customers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	11.5	8.9
Receivables from ATM and cash kiosk transactions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	20.9	10.9
Hotel and banquet
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	4.1	2.7
Racing settlements
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	12.8	7.7
Online gaming and licensing receivables from third party operators, including taxes
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	70.0	16.4
Media receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	10.3	0.0
Insurance Receivable - Hurricane Laura
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	28.7	23.0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	$ 29.6	$ 20.8