v3.25.4
Cash Equivalents and Marketable Securities - Cash Equivalents and Marketable Securities (Details)
$ in Millions
 3 Months Ended
Apr. 27, 2025
segment
Jan. 25, 2026
USD ($)
Jan. 26, 2025
USD ($)
Debt Securities, Available-for-sale [Line Items]      
Unrealized Gain   $ 174 $ 100
Unrealized Loss   (6) (56)
Estimated Fair Value   39,520  
Cash Equivalents   8,285 7,866
Cost of Amortized Cost, Total   47,182 42,062
Estimated fair Value, Total   65,076 42,487
Marketable Securities, Total   51,951 34,621
Number of investments reclassified | segment 1    
Debt securities issued by the U.S. Treasury | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Cost or Amortized Cost   21,635 16,749
Unrealized Gain   77 42
Unrealized Loss   (3) (22)
Estimated Fair Value   21,709 16,769
Cash Equivalents   0 1,801
Marketable Securities     14,968
Corporate debt securities | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Cost or Amortized Cost   15,410 18,504
Unrealized Gain   92 51
Unrealized Loss   (3) (29)
Estimated Fair Value   15,499 18,526
Cash Equivalents   345 2,071
Marketable Securities     16,455
Debt securities issued by U.S. government agencies | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Cost or Amortized Cost   2,157 2,775
Unrealized Gain   4 7
Unrealized Loss   0 (5)
Estimated Fair Value   2,161 2,777
Cash Equivalents   0 0
Marketable Securities     2,777
Certificates of deposit | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Cost or Amortized Cost   110 97
Unrealized Gain   0 0
Unrealized Loss   0 0
Estimated Fair Value   110 97
Cash Equivalents   110 97
Marketable Securities     0
Foreign government bonds | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Cost or Amortized Cost   40 177
Unrealized Gain   1 0
Unrealized Loss   0 0
Estimated Fair Value   41 177
Cash Equivalents   0 137
Marketable Securities     40
Money market funds | Level 1      
Debt Securities, Available-for-sale [Line Items]      
Cost or Amortized Cost   7,830 3,760
Unrealized Gain   0 0
Unrealized Loss   0 0
Estimated Fair Value   7,830 3,760
Cash Equivalents   7,830 3,760
Marketable Securities     0
Publicly-held equity securities      
Debt Securities, Available-for-sale [Line Items]      
Short-term investments   10,500  
Publicly-held equity securities | Level 1      
Debt Securities, Available-for-sale [Line Items]      
Publicly-held equity securities   17,726 $ 381
Marketable Securities      
Debt Securities, Available-for-sale [Line Items]      
Marketable Securities, Total   51,951  
Marketable Securities | Debt securities issued by the U.S. Treasury | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Marketable Securities   21,709  
Marketable Securities | Corporate debt securities | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Marketable Securities   15,154  
Marketable Securities | Debt securities issued by U.S. government agencies | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Marketable Securities   2,161  
Marketable Securities | Certificates of deposit | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Marketable Securities   0  
Marketable Securities | Foreign government bonds | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Marketable Securities   41  
Marketable Securities | Money market funds | Level 1      
Debt Securities, Available-for-sale [Line Items]      
Marketable Securities   0  
Marketable Securities | Publicly-held equity securities | Level 1      
Debt Securities, Available-for-sale [Line Items]      
Publicly-held equity securities   12,886  
Other Assets      
Debt Securities, Available-for-sale [Line Items]      
Other Assets   4,840  
Other Assets | Debt securities issued by the U.S. Treasury | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Other Assets   0  
Other Assets | Corporate debt securities | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Other Assets   0  
Other Assets | Debt securities issued by U.S. government agencies | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Other Assets   0  
Other Assets | Certificates of deposit | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Other Assets   0  
Other Assets | Foreign government bonds | Level 2      
Debt Securities, Available-for-sale [Line Items]      
Other Assets   0  
Other Assets | Money market funds | Level 1      
Debt Securities, Available-for-sale [Line Items]      
Other Assets   0  
Other Assets | Publicly-held equity securities | Level 1      
Debt Securities, Available-for-sale [Line Items]      
Publicly-held equity securities   $ 4,840