ACQUISITIONS AND DIVESTITURE - Additional Information (Detail) - USD ($)	1 Months Ended				6 Months Ended
	May 31, 2022	Apr. 30, 2022	Jan. 31, 2022	Apr. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Business Acquisition [Line Items]
Consideration and transfer fees					$ 627,000
Consideration in cash					20,000.0
Acquisition cash paid					$ 431,105,000	$ 255,633,000
Divestiture Agreement Description					In February 2021, the Company signed a new franchise agreement and side letter (the "Franchise Agreements") directly with the Writer’s Guild of America East and the Writer’s Guild of America West (collectively, the "WGA"). These Franchise Agreements included terms that, among other things, prohibited the Company from (a) negotiating packaging deals after June 30, 2022 and (b) having more than a 20% non-controlling ownership or other financial interest in, or being owned or affiliated with any individual or entity that has more than a 20% non-controlling ownership or other financial interest in, any entity or individual engaged in the production or distribution of works written by WGA members under a WGA collective bargaining agreement. As a result, in the third quarter of 2021, the Company began marketing the restricted Endeavor Content business for sale and such assets and liabilities were reflected as held for sale in the consolidated balance sheet as of December 31, 2021. The sale of 80% of the restricted Endeavor Content business closed in January 2022. The Company received cash proceeds of $666.3 million and divested $16.6 million of cash and restricted cash on the date of sale. The retained 20% interest of the restricted Endeavor Content business is reflected as an equity method investment as of June 30, 2022 and was valued at $196.3 million at the date of sale. The fair value of the retained 20% interest of the restricted Endeavor Content business was determined using the market approach. The key input assumption was the transaction price paid for the Company's 80% interest in the restricted Endeavor Content business. The Company recorded a net gain of $463.6 million, inclusive of a $121.1 million gain related to the remeasurement of the retained interest in the restricted Endeavor Content business to fair value and $15.0 million of transaction costs, in other (expense) income, net during the six months ended June 30, 2022. The restricted Endeavor Content business was included in the Company’s Representation segment prior to the sale.
Cash proceeds received					$ 666,300,000
Equity-method investment					196,300,000
Cash and cash equivalents					16,600,000
Net gain recognized					463,600,000
Gain Related to The Remeasurement of Retained Interest					121,100,000
Transaction costs					15,000,000.0
Assets Held For Sale [Member]
Business Acquisition [Line Items]
Assets and liabilities held for sale					19,700,000
Liabilities Held For Sale [Member]
Business Acquisition [Line Items]
Assets and liabilities held for sale					$ 5,000,000.0
Minimum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					4 years 4 months 24 days
Maximum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					5 years 2 months 12 days
EGH [Member]
Business Acquisition [Line Items]
Acquisition purchase price	$ 15,600,000
Accquisition controlling interest	73.50%
Acquisition cash paid	$ 4,600,000
Acquisition intangible	10,800,000
Acquisition intangible assets	$ 3,400,000
EGH [Member] | Common Class A [Member]
Business Acquisition [Line Items]
Number of shares issued	396,917
Value of shares issued for acquisition	$ 11,000,000.0
EGH [Member] | Minimum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
EGH [Member] | Maximum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Diamond Baseball Holdings and Madrid Open [Member]
Business Acquisition [Line Items]
Consideration and transfer fees		$ 386,100,000
Consideration payable		31,800,000
Contingent consideration payable		$ 600,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life					18 years 8 months 12 days
Business acquisitions, proforma revenue					$ 72,200,000
Business acquisitions, proforma net loss					33,300,000
Diamond Baseball Holdings and Madrid Open [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs					7,500,000
FlightScope and NCSA [Member]
Business Acquisition [Line Items]
Consideration and transfer fees				$ 247,900,000
FlightScope and NCSA [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs				$ 4,200,000
FlightScope [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Acquisition intangible assets					0
NCSA [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Acquisition intangible assets					$ 21,100,000
Diamond Baseball Holdings [Member]
Business Acquisition [Line Items]
Consideration and transfer fees			$ 64,200,000