ACQUISITIONS AND DIVESTITURES - Additional Information (Detail) - USD ($) $ in Thousands			1 Months Ended						9 Months Ended	12 Months Ended
	Mar. 20, 2020	Jan. 01, 2020	Sep. 30, 2022	Aug. 31, 2022	May 31, 2022	Apr. 30, 2022	Jan. 31, 2022	Jan. 31, 2020	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2021	Apr. 30, 2021
Business Acquisition [Line Items]
Acquisitions										$ 1,500	$ 4,245
Acquisition cash paid										1,434,515	436,372	$ 317,929
Goodwill										5,284,697	4,506,554	4,181,179
Proceeds from business divestitures, net of cash sold										924,751	0	0
Cash and cash equivalents										16,600
Net gain recognized										$ 463,600
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]										Nonoperating Income (Expense)
Gain related to the remeasurement of retained interest										$ 121,100
Transaction costs										15,000
Revenue										5,268,137	5,077,713	3,478,743
Net income (loss) attributable to EGH common shareholders										129,133	$ (296,625)	0
Deconsolidation, Gain (Loss), Amount		$ 8,100
Endeavor [Member]
Business Acquisition [Line Items]
Proceeds from business divestitures, net of cash sold										666,300
Fair Value of Equity Method Investment										196,300
Wishstar Enterprises Limited [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage													100.00%
Asian Tour Limited [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage		50.00%
Assets Held For Sale [Member]
Business Acquisition [Line Items]
Assets and liabilities held for sale										12,000
Liabilities Held For Sale [Member]
Business Acquisition [Line Items]
Assets and liabilities held for sale										$ 2,700
Maximum [Member] | Endeavor [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage											50.00%
Minimum [Member] | Endeavor [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage										6.00%
On Location Events, LLC [Member]
Business Acquisition [Line Items]
Acquisitions								$ 441,100
Cash consideration								$ 366,400
Business Acquisition, Percentage of Voting Interests Acquired								13.50%
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable								$ 65,200
Business Combination, Consideration Transferred, Contingent Premium Payment								$ 9,500		$ 41,000
Share Price Per Unit Percentage								32.00%
Business Acquisition, Transaction Costs												13,700
Goodwill												$ 387,542
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life												10 years 8 months 12 days
On Location Events, LLC [Member] | Endeavor [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage								44.90%
On Location Events, LLC [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived contract based intangible asset												$ 75,400
Other 2020 Acquisition [Member]
Business Acquisition [Line Items]
Acquisitions	$ 37,000
Business Acquisition, Percentage of Voting Interests Acquired	50.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage	50.00%
Finite-lived contract based intangible asset	$ 46,400
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life	2 years
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ 27,100
Other 2020 Acquisition [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Goodwill	$ 8,600
FlightScope and NCSA [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs														$ 10,700
FlightScope [Member]
Business Acquisition [Line Items]
Goodwill											$ 33,550
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life											4 years 4 months 24 days
FlightScope [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived contract based intangible asset											$ 0
NCSA [Member]
Business Acquisition [Line Items]
Goodwill											$ 214,106
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life											5 years 2 months 12 days
NCSA [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived contract based intangible asset											$ 21,100
Mailman [Member]
Business Acquisition [Line Items]
Goodwill											$ 22,342
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life											7 years 7 months 6 days
Mailman [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived contract based intangible asset											$ 800
DBH [Member]
Business Acquisition [Line Items]
Acquisitions							$ 64,200		$ 280,100
Goodwill										25,585
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life											18 years 2 months 12 days
Net gain recognized										23,300
DBH [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived contract based intangible asset										0
Mutua Madrid Open [Member]
Business Acquisition [Line Items]
Acquisitions						$ 386,100
Consideration payable						31,800
Contingent consideration payable						$ 600
Goodwill										14,419
Mutua Madrid Open [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived contract based intangible asset										0
Barrett Jackson Holdings Llc [Member]
Business Acquisition [Line Items]
Acquisitions				$ 256,900
Aggregate consideration				$ 244,400
Business Acquisition, Percentage of Voting Interests Acquired				55.00%
Goodwill										$ 330,880
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life										6 years 2 months 12 days
Barrett Jackson Holdings Llc [Member] | Common Class A [Member]
Business Acquisition [Line Items]
Number of shares issued to acquire entity				563,935
Issuance of Class A common stock due to exchanges				$ 12,500
Barrett Jackson Holdings Llc [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived contract based intangible asset										$ 120,900
OpenBet [Member]
Business Acquisition [Line Items]
Acquisitions			$ 847,100
Aggregate consideration			$ 800,400
Goodwill										$ 477,282
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life										11 years 7 months 6 days
OpenBet [Member] | Common Class A [Member]
Business Acquisition [Line Items]
Number of shares issued to acquire entity			2,305,794
Issuance of Class A common stock due to exchanges			$ 46,700
OpenBet [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived contract based intangible asset										$ 67,000
Diamond Baseball Holdings and Madrid Open [Member]
Business Acquisition [Line Items]
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life										18 years 8 months 12 days
Diamond Baseball Holdings and Madrid Open [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs										$ 31,600
Four PDL Clubs, Madrid Open, Barrett-Jackson, and OpenBet [Member]
Business Acquisition [Line Items]
Revenue										149,800
Net income (loss) attributable to EGH common shareholders										$ 32,000
EGH [Member]
Business Acquisition [Line Items]
Total purchase price									3,900
Purchase price including contingent consideration			$ 900						$ 900
Acquisition intangible					$ 13,800
Cash consideration					$ 15,600
Business Acquisition, Percentage of Voting Interests Acquired					73.50%
Acquisition cash paid					$ 4,600
Finite-lived contract based intangible asset					$ 4,200
EGH [Member] | Common Class A [Member]
Business Acquisition [Line Items]
Number of shares issued to acquire entity					396,917
Value of shares issued for acquisition					$ 11,000
EGH [Member] | Maximum [Member]
Business Acquisition [Line Items]
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life					10 years
EGH [Member] | Minimum [Member]
Business Acquisition [Line Items]
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life					5 years
Flightscope, Next College Student Athlete, and Mailman [Member]
Business Acquisition [Line Items]
Acquisitions											$ 469,600