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Derivative Instruments - Cumulative Basis Adjustments For Fair Value Hedges (Details) - Derivatives designated as hedging instruments: - USD ($)
$ in Millions
Jan. 27, 2024
Jul. 29, 2023
Short-term debt    
Derivative [Line Items]    
CARRYING AMOUNT OF THE HEDGED ASSETS/(LIABILITIES) $ (997) $ (983)
CUMULATIVE AMOUNT OF FAIR VALUE HEDGING ADJUSTMENT INCLUDED IN THE CARRYING AMOUNT OF THE HEDGED ASSETS/LIABILITIES 3 17
Long-term debt    
Derivative [Line Items]    
CARRYING AMOUNT OF THE HEDGED ASSETS/(LIABILITIES) (485) (476)
CUMULATIVE AMOUNT OF FAIR VALUE HEDGING ADJUSTMENT INCLUDED IN THE CARRYING AMOUNT OF THE HEDGED ASSETS/LIABILITIES $ 15 $ 24