SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
	Jun. 01, 2021 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Apr. 20, 2021 $ / shares shares	Nov. 18, 2020 USD ($) $ / shares shares
Property, Plant and Equipment [Line Items]
Assets		$ 6,760,402		$ 6,300,113
Liabilities		5,738,790		5,493,866
Revenue		598,720	$ 548,271
Advertising Expense		5,400	7,500
Amortization of intangible assets		55,875	62,100
Naming rights liability		107,756		109,807
Number of common shares called by warrant (in shares) | shares					909,090
Exercise price of warrants (in dollars per share) | $ / shares					$ 55.00
Percent of warrants and options subject to approval	0.199
Provision (benefit) for income taxes		$ 137,742	$ (5,575)
Effective Income Tax Rate Reconciliation, Percent		43.60%	151.20%
Rhode Island Joint Venture
Property, Plant and Equipment [Line Items]
Equity Method Investment, Ownership Percentage		40.00%
Income (Loss) from Equity Method Investments		$ 2,100
Bally's Interactive
Property, Plant and Equipment [Line Items]
Advertising Expense		45,900	$ 57,700
Variable Interest Entity, Primary Beneficiary | Breckenridge Curacao B.V
Property, Plant and Equipment [Line Items]
Assets		147,300		93,400
Liabilities		81,100		77,100
Revenue		84,000	86,900
Penny Warrant
Property, Plant and Equipment [Line Items]
Number of common shares called by warrant (in shares) | shares						4,915,726
Exercise price of warrants (in dollars per share) | $ / shares						$ 0.01
Fair value of underlying shares	$ 150,400
Performance Warrant
Property, Plant and Equipment [Line Items]
Exercise price of warrants (in dollars per share) | $ / shares						$ 0.01
Performance Warrant | Maximum
Property, Plant and Equipment [Line Items]
Number of common shares called by warrant (in shares) | shares						3,279,337
Option on Securities
Property, Plant and Equipment [Line Items]
Number of common shares called by warrant (in shares) | shares						1,639,669
Option on Securities | Maximum
Property, Plant and Equipment [Line Items]
Exercise price of warrants (in dollars per share) | $ / shares						$ 45.00
Option on Securities | Minimum
Property, Plant and Equipment [Line Items]
Exercise price of warrants (in dollars per share) | $ / shares						$ 30.00
Penny Warrant and Options
Property, Plant and Equipment [Line Items]
Equity, Fair Value Adjustment				59,700
Naming Rights
Property, Plant and Equipment [Line Items]
Amortization of intangible assets		(7,700)	(8,400)
Sinclair Agreement
Property, Plant and Equipment [Line Items]
Naming rights, total fees						$ 88,000
Naming rights liability		58,900		59,300
Accretion expense			$ 1,100
Tax benefit shared, in percent						0.60
Estimate in tax receivable agreement liability		17,900		19,400
Sinclair Agreement | Accrued Liabilities
Property, Plant and Equipment [Line Items]
Short-term portion of liability		6,500		6,000
Sinclair Agreement | Naming Rights Liability
Property, Plant and Equipment [Line Items]
Long-term portion of liability		52,400		53,300
Sinclair Agreement
Property, Plant and Equipment [Line Items]
Initial term	10 years
Naming rights, intangible assets		$ 247,900		$ 255,600