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Acquisitions, Disposals and Other Transactions - Narrative (Details)
$ in Millions
12 Months Ended
Jun. 30, 2024
USD ($)
business
Jun. 30, 2023
USD ($)
business
Jun. 30, 2022
USD ($)
business
Feb. 06, 2024
Jan. 12, 2024
Business Acquisition [Line Items]          
Number of businesses acquired | business 0 0 3    
Consideration transferred     $ 240    
Deconsolidation, gain (loss), amount $ 166 $ 0 $ 45    
ESPN And Warner Bros. Discovery Joint Venture          
Business Acquisition [Line Items]          
Joint venture, ownership percentage       33.33%  
United States Football League          
Business Acquisition [Line Items]          
Equity method investment, ownership percentage         42.00%
Disposal | United States Football League          
Business Acquisition [Line Items]          
Deconsolidation, gain (loss), amount $ 170