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Related Party Transactions - Schedule of Transactions by Type (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Related Party Transaction [Line Items]
Revenues	$ 273,395	$ 321,330	$ 314,157	$ 118,007	$ 129,099	$ 162,062	$ 159,541	$ 123,129	$ 1,026,889	$ 573,831	$ 610,055
Operating (expenses) credits:
Operating loss	$ (71,377)	$ (40,393)	$ (159,682)	$ (69,789)	$ (70,346)	$ (101,906)	$ (49,735)	$ (51,055)
Restructuring costs									3,363
Related Party
Related Party Transaction [Line Items]
Revenues									3,585	2,079	1,220
Operating (expenses) credits:
Operating loss									(309,524)	(175,482)	(130,709)
Direct operating costs									(182,051)	(206,804)	(167,928)
Selling, general and administrative expense									127,473	31,322	37,219
Media rights fees | Related Party
Operating (expenses) credits:
Operating income (expense)									(175,462)	(172,581)	(163,131)
Cost reimbursement from MSG Sports - MSG Sports Services Agreement | MSG Sports
Operating (expenses) credits:
Operating income (expense)									0	29,836	38,254
Corporate general and administrative expenses, net - MSGE TSA | MSG Entertainment
Operating (expenses) credits:
Operating income (expense)									(110,966)	(27,494)	0
Origination, master control and technical services | Related Party
Operating (expenses) credits:
Operating income (expense)									(5,079)	(4,982)	(4,880)
Other operating expenses, net | Related Party
Operating (expenses) credits:
Operating income (expense)									$ (18,017)	$ (261)	$ (952)

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