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Debt - Additional Information (Details) - USD ($)
$ in Millions
Dec. 25, 2021
Sep. 25, 2021
Debt Instrument [Line Items]    
Commercial paper $ 5,000 $ 6,000
Floating- and fixed-rate notes, aggregate carrying amount 117,800 118,700
Commercial paper    
Debt Instrument [Line Items]    
Commercial paper 5,000 6,000
Level 2    
Debt Instrument [Line Items]    
Floating- and fixed-rate notes, aggregate fair value $ 123,500 $ 125,300