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Shareholders' Equity - Additional Information (Details)
shares in Millions
12 Months Ended
Sep. 26, 2020
USD ($)
shares
Share Repurchase Program [Line Items]  
Amount authorized for repurchase of common stock (up to) $ 225,000,000,000
Share repurchase program, amount utilized $ 168,600,000,000
Number of shares repurchased (in shares) | shares 917
Amount of share repurchases $ 72,500,000,000
November 2019 accelerated share repurchase arrangement  
Share Repurchase Program [Line Items]  
Number of shares repurchased (in shares) | shares 141
Amount of share repurchases, accelerated share repurchase arrangement $ 10,000,000,000.0
May 2020 accelerated share repurchase arrangement  
Share Repurchase Program [Line Items]  
Number of shares repurchased (in shares) | shares 64
Amount of share repurchases, accelerated share repurchase arrangement $ 6,000,000,000.0