Fair Value Measurements - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($) installment payment	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Jul. 01, 2021	Feb. 28, 2021	Jan. 19, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 48.2		$ 84.3
Equity securities, FV-NI, unrealized loss	(38.7)	$ 26.1
HitPoint
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Installment amount of contingent consideration	$ 1.0
Number of installments for contingent consideration | installment	3
Plainridge Park Casino
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Period of actual earnings used to calculate contingent consideration	10 years
Number of remaining annual payments | payment	4
Senior Notes | 5.625% Notes due 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate	5.625%		5.625%			5.625%
Senior Notes | 4.125% Notes due 2029
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate	4.125%		4.125%	4.125%
Other long-term obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Effective yield					27.00%
Pinnacle Retama Partners, LLC | Other Assets | Local Government Bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment, at amortized cost	$ 6.7
Pinnacle Retama Partners, LLC | Other Assets | Retama Development Corporation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Promissory notes	$ 7.9		$ 15.1
Retama Nominal Holder, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Ownership interest	1.00%
Pinnacle Retama Partners, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Ownership interest by parent	75.50%