v3.26.1
Borrowings - Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
Apr. 25, 2026
Jul. 26, 2025
Debt Instrument [Line Items]    
Other debt $ 2 $ 3
Total 23,002 24,753
Unaccreted discount/issuance costs (133) (142)
Total 22,869 24,611
Current portion of senior fixed-rate notes 3,498 1,750
Long-term debt $ 19,371 22,861
Fixed-Rate Notes 4.90%, Due February 2026    
Debt Instrument [Line Items]    
Interest rate, stated percentage 4.90%  
Amount $ 0 $ 1,000
Effective Rate 0.00% 5.00%
Fixed-Rate Notes 2.95%, Due February 2026    
Debt Instrument [Line Items]    
Interest rate, stated percentage 2.95%  
Amount $ 0 $ 750
Effective Rate 0.00% 3.01%
Fixed Rate Notes 2.50%, Due September 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 4.80%, Due February 2027    
Debt Instrument [Line Items]    
Interest rate, stated percentage 4.80%  
Amount $ 2,000 $ 2,000
Effective Rate 4.90% 4.90%
Fixed Rate Notes 4.55%, Due February 2028    
Debt Instrument [Line Items]    
Interest rate, stated percentage 4.55%  
Amount $ 1,000 $ 1,000
Effective Rate 4.61% 4.61%
Fixed Rate Notes 4.85%, Due February 2029    
Debt Instrument [Line Items]    
Interest rate, stated percentage 4.85%  
Amount $ 2,500 $ 2,500
Effective Rate 4.91% 4.91%
Fixed Rate Notes 4.75%, Due February 2030    
Debt Instrument [Line Items]    
Interest rate, stated percentage 4.75%  
Amount $ 1,000 $ 1,000
Effective Rate 4.73% 4.73%
Fixed Rate Notes 4.95%, Due February 2031    
Debt Instrument [Line Items]    
Interest rate, stated percentage 4.95%  
Amount $ 2,500 $ 2,500
Effective Rate 5.04% 5.04%
Fixed Rate Notes 4.95%, Due February 2032    
Debt Instrument [Line Items]    
Interest rate, stated percentage 4.95%  
Amount $ 1,000 $ 1,000
Effective Rate 4.94% 4.94%
Fixed Rate Notes 5.05%, Due February 2034    
Debt Instrument [Line Items]    
Interest rate, stated percentage 5.05%  
Amount $ 2,500 $ 2,500
Effective Rate 4.97% 4.97%
Fixed Rate Notes 5.10%, Due February 2035    
Debt Instrument [Line Items]    
Interest rate, stated percentage 5.10%  
Amount $ 1,250 $ 1,250
Effective Rate 5.11% 5.11%
Fixed-Rate Notes 5.90%, Due February 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 2040    
Debt Instrument [Line Items]    
Interest rate, stated percentage 5.50%  
Amount $ 2,000 $ 2,000
Effective Rate 5.67% 5.67%
Fixed-Rate Notes 5.30%, Due February 2054    
Debt Instrument [Line Items]    
Interest rate, stated percentage 5.30%  
Amount $ 2,000 $ 2,000
Effective Rate 5.28% 5.28%
Fixed-Rate Notes 5.50%, Due February 2055    
Debt Instrument [Line Items]    
Interest rate, stated percentage 5.50%  
Amount $ 750 $ 750
Effective Rate 5.49% 5.49%
Fixed-Rate Notes 5.35%, Due February 2064    
Debt Instrument [Line Items]    
Interest rate, stated percentage 5.35%  
Amount $ 1,000 $ 1,000
Effective Rate 5.42% 5.42%
Other debt    
Debt Instrument [Line Items]    
Effective Rate 1.13% 1.13%