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COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) € in Millions	1 Months Ended					4 Months Ended	6 Months Ended
	Sep. 30, 2021 USD ($) shares	Dec. 31, 2020 EUR (€)	Jul. 31, 2020 EUR (€)	Jul. 31, 2019 EUR (€)	May 31, 2019 EUR (€)	Mar. 31, 2015	Jun. 30, 2022 USD ($)
Aggregate purchase price \| $							$ 627,000
Consideration in cash \| $							$ 20,000.0
Zuffa [Member]
New claims filed, number						5
UFC Fighters [Member]
New claims filed, number						11
OpenBet [Member]
Aggregate purchase price \| $	$ 800,000,000.0
Consideration in cash \| $	$ 750,000,000.0
OpenBet [Member] \| Common Class A [Member]
Number of shares issued \| shares	2,305,794
Value of shares issued for acquisition \| $	$ 50,000,000.0
Breach of Competition Law [Member] \| Italian Competition Authority [Member]
Loss contingency, loss in period \| €					€ 0.3
Breach of Competition Law [Member] \| Lega Nazionale [Member]
Loss contingency, damages sought, value \| €			€ 1,592.2
Breach of Competition Law [Member] \| Ten Other Clubs [Member]
Loss contingency, damages sought, value \| €		€ 92.1
Breach of Competition Law [Member] \| Three Football Clubs [Member]
Loss contingency, damages sought, value \| €				€ 554.6
Breach of Competition Law [Member] \| Four Additional Football Club [Member]
Loss contingency, damages sought, value \| €		€ 251.5