DEBT - Summary of Outstanding Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total principal	$ 5,254,596	$ 5,061,164
Unamortized discount	(10,474)	(11,192)
Unamortized issuance costs	(16,025)	(21,661)
Total debt	5,228,097	5,028,311
Less: current portion	(2,323,825)	(58,894)
Long-term debt	2,904,272	4,969,417
First Lien Term Loan (due May 2025) [Member]
Debt Instrument [Line Items]
Total principal	2,221,185	2,243,784
Revolving Credit Facility (due April 2025) [Member]
Debt Instrument [Line Items]
Total principal	75,000	0
Zuffa First Lien Term Loan (due April 2026) [Member]
Debt Instrument [Line Items]
Total principal	2,705,516	2,728,766
Other Debt (3.25%-14.50% Notes due at various dates through 2034) [Member]
Debt Instrument [Line Items]
Total principal	$ 252,895	$ 88,614