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