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Principles of Consolidation Principles of Consolidation - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2023
Nov. 30, 2022
Dec. 31, 2022
Nov. 30, 2023
Oct. 01, 2022
Hearst Corporation | Domestic DTC Sports Business          
Schedule of Equity Method Investments          
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners     20.00%    
Contribution to Subsidiary, Noncontrolling Owner     $ 178    
Hulu LLC | Equity Interest Held by NBC Universal          
Schedule of Equity Method Investments          
Equity Method Investment, Ownership Percentage       33.00%  
Redeemable Noncontrolling Interest, Equity, Redemption Value       $ 27,500  
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests $ 8,600        
Percentage of Tax Benefit Shared Arising from Noncontrolling Interest Acquisition       50.00%  
Tax Benefit Amortization Period Arising from Noncontrolling Interest Acquisition       15 years  
BAMTech, LLC | MLB          
Schedule of Equity Method Investments          
Equity Method Investment, Ownership Percentage   15.00%      
Redeemable Noncontrolling Interest, Equity, Redemption Value   $ 900     $ 828
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest   $ 72