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Derivative Instruments - Effect of Derivative Instruments Designated as Fair Value Hedges (Details) - Interest and other income (loss), net - Interest rate derivatives - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jan. 29, 2022
Jan. 23, 2021
Jan. 29, 2022
Jan. 23, 2021
Derivative [Line Items]        
Hedged items $ 32 $ 14 $ 58 $ 33
Derivatives designated as hedging instruments (32) (14) (59) (34)
Total $ 0 $ 0 $ (1) $ (1)