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Borrowings - Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
Jan. 27, 2024
Jul. 29, 2023
Debt Instrument [Line Items]    
Total $ 7,750 $ 8,500
Unaccreted discount/issuance costs (66) (68)
Hedge accounting fair value adjustments (18) (41)
Total 7,666 8,391
Current portion of long-term debt 997 1,733
Long-term debt $ 6,669 6,658
Fixed-Rate Notes, 2.20%, Due September 20, 2023    
Debt Instrument [Line Items]    
Interest rate, stated percentage 2.20%  
Amount $ 0 $ 750
Effective Rate 0.00% 2.27%
Fixed-Rate Notes, 3.625%, Due March 4, 2024    
Debt Instrument [Line Items]    
Interest rate, stated percentage 3.625%  
Amount $ 1,000 $ 1,000
Effective Rate 6.35% 6.08%
Fixed-Rate Notes, 3.50%, Due June 15, 2025    
Debt Instrument [Line Items]    
Interest rate, stated percentage 3.50%  
Amount $ 500 $ 500
Effective Rate 6.66% 6.38%
Fixed-Rate Notes, 2.95%, Due February 28, 2026    
Debt Instrument [Line Items]    
Interest rate, stated percentage 2.95%  
Amount $ 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%  
Amount $ 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%  
Amount $ 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%  
Amount $ 2,000 $ 2,000
Effective Rate 5.67% 5.67%