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Business Combination, Contingent Consideration Arrangements, Installment Amount

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Business Combination, Contingent Consideration Arrangements, Number Of Annual Payments Remaining

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Business Combination, Contingent Consideration Arrangements, Number Of Installments

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of unrealized loss on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity), classified as noncurrent.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Amount, after allowance for credit loss, of financing receivable, classified as noncurrent.

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Fair Value Measurements - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
Fair Value Measurements - Narrative (Details) $ in Millions	Sep. 30, 2021 USD ($) payment installment	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) payment installment	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	May 31, 2020	Jan. 19, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 176.8		$ 176.8		$ 143.1
Loss on ordinary shares	20.1
Unrealized gains (losses)	10.1	$ 67.9	28.9	$ 75.6
HitPoint
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Installment amount of contingent consideration	$ 1.0		$ 1.0
Number of installments for contingent consideration \| installment	3		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		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%		5.625%
Convertible Notes \| 2.75% Convertible Notes due 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate	2.75%		2.75%			2.75%
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		$ 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	$ 15.1		$ 15.1		$ 15.1
Retama Nominal Holder, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Ownership interest	1.00%		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%		75.50%