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Principles of Consolidation Principles of Consolidation - Additional Information (Details) - USD ($)
$ in Millions
Jun. 27, 2020
Sep. 28, 2019
May 13, 2019
Apr. 15, 2019
Mar. 20, 2019
Sep. 25, 2017
Schedule of Equity Method Investments            
Redeemable Noncontrolling Interests $ 9,162 $ 8,963        
BAMTech, LLC            
Schedule of Equity Method Investments            
Equity Method Investment, Ownership Percentage 75.00%          
MLB | BAMTech, LLC            
Schedule of Equity Method Investments            
Equity Method Investment, Ownership Percentage 15.00%          
Redeemable Noncontrolling Interest, Equity, Redemption Value $ 696          
MLB | BAMTech, LLC | Minimum            
Schedule of Equity Method Investments            
Redeemable Noncontrolling Interest, Equity, Redemption Value           $ 563
Preferred Stock Return on NCI, Accretion Percentage           8.00%
NHL | BAMTech, LLC            
Schedule of Equity Method Investments            
Equity Method Investment, Ownership Percentage 10.00%          
Redeemable Noncontrolling Interest, Equity, Redemption Value           $ 500
NHL | BAMTech, LLC | Maximum            
Schedule of Equity Method Investments            
Redeemable Noncontrolling Interest, Equity, Redemption Value           $ 350
Hulu LLC            
Schedule of Equity Method Investments            
Equity Method Investment, Ownership Percentage 67.00% 67.00%     60.00%  
Hulu LLC | Equity Interest Held by NBC Universal            
Schedule of Equity Method Investments            
Equity Method Investment, Ownership Percentage     33.00% 33.00%    
Redeemable Noncontrolling Interest, Equity, Redemption Value     $ 27,500      
Redeemable Noncontrolling Interests $ 8,100