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Goodwill and Intangible Assets - Schedule of Goodwill Activity (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Goodwill [Roll Forward]    
Goodwill, beginning balance $ 456,807 $ 456,807
Activity 0 0
Goodwill, ending balance 456,807 456,807
Sphere    
Goodwill [Roll Forward]    
Goodwill, beginning balance 32,299 32,299
Activity 0 0
Goodwill, ending balance 32,299 32,299
MSG Networks    
Goodwill [Roll Forward]    
Goodwill, beginning balance 424,508 424,508
Activity 0 0
Goodwill, ending balance $ 424,508 $ 424,508