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Borrowings - Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
Jul. 30, 2022
Jul. 31, 2021
Debt Instrument [Line Items]    
Total $ 9,000 $ 11,500
Unaccreted discount/issuance costs (75) (80)
Hedge accounting fair value adjustments (10) 106
Total 8,915 11,526
Short-term debt 499 2,508
Long-term debt $ 8,416 $ 9,018
Fixed Rate Notes, 1.85% Due September 20, 2021    
Debt Instrument [Line Items]    
Interest rate, stated percentage   1.85%
Senior notes   $ 2,000
Effective Rate   1.90%
Fixed-Rate Notes, 3.00%, Due June 15, 2022    
Debt Instrument [Line Items]    
Interest rate, stated percentage   3.00%
Senior notes   $ 500
Effective Rate   1.13%
Fixed-Rate Notes, 2.60%, Due February 28, 2023    
Debt Instrument [Line Items]    
Interest rate, stated percentage 2.60%  
Senior notes $ 500 $ 500
Effective Rate 2.68% 2.68%
Fixed Rate Notes, 2.20%, Due September 20, 2023    
Debt Instrument [Line Items]    
Interest rate, stated percentage 2.20%  
Senior notes $ 750 $ 750
Effective Rate 2.27% 2.27%
Fixed-Rate Notes,3.625%, Due March 4, 2024    
Debt Instrument [Line Items]    
Interest rate, stated percentage 3.625%  
Senior notes $ 1,000 $ 1,000
Effective Rate 2.69% 1.00%
Fixed-Rate Notes,3.50%, Due June 15, 2025    
Debt Instrument [Line Items]    
Interest rate, stated percentage 3.50%  
Senior notes $ 500 $ 500
Effective Rate 3.20% 1.29%
Fixed-Rate Notes,2.95%, Due February 28, 2026    
Debt Instrument [Line Items]    
Interest rate, stated percentage 2.95%  
Senior notes $ 750 $ 750
Effective Rate 3.01% 3.01%
Fixed Rate Notes, 2.50%, Due September 20, 2026    
Debt Instrument [Line Items]    
Interest rate, stated percentage 2.50%  
Senior notes $ 1,500 $ 1,500
Effective Rate 2.55% 2.55%
Fixed-Rate Notes, 5.90%, Due February 15, 2039    
Debt Instrument [Line Items]    
Interest rate, stated percentage 5.90%  
Senior notes $ 2,000 $ 2,000
Effective Rate 6.11% 6.11%
Fixed-Rate Notes, 5.50%, Due January 15, 2040    
Debt Instrument [Line Items]    
Interest rate, stated percentage 5.50%  
Senior notes $ 2,000 $ 2,000
Effective Rate 5.67% 5.67%