Related Party Transactions - Narrative (Details) - $ / shares		9 Months Ended
	Apr. 24, 2025	Mar. 31, 2025	Jun. 30, 2024	Oct. 01, 2015
Related Party Transaction [Line Items]
Aggregate voting power held by related party (as a percent)		70.70%
Arena License Agreements | MSG Entertainment
Related Party Transaction [Line Items]
License agreement term		35 years
Related party transaction, percentage of net profits from sales and catering services (as a percent)		50.00%
Sponsorship Sales and Service Representation Agreements | MSG Entertainment
Related Party Transaction [Line Items]
License agreement term		10 years
Media rights | MSG Networks
Related Party Transaction [Line Items]
License agreement term		20 years
Transaction Support Agreement | MSG Networks | Subsequent Event
Related Party Transaction [Line Items]
Related party transaction, penny warrants issued, exercisable, percentage of equity interests (in percent)	19.90%
Transaction Support Agreement | MSG Networks And New York Knicks | Subsequent Event
Related Party Transaction [Line Items]
Related party transaction, reduction in the annual rights fees (as a percent)	28.00%
Transaction Support Agreement | MSG Networks And New York Rangers | Subsequent Event
Related Party Transaction [Line Items]
Related party transaction, reduction in the annual rights fees (as a percent)	18.00%
Class B Common Stock
Related Party Transaction [Line Items]
Percentage of common stock owned by related party (as a percent)		100.00%
Common stock, par value (in USD per share)		$ 0.01	$ 0.01
Class A Common Stock
Related Party Transaction [Line Items]
Percentage of common stock owned by related party (as a percent)		2.60%
Common stock, par value (in USD per share)		$ 0.01	$ 0.01	$ 0.01