Segment Information - Reconciling Items (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 25, 2026	Jan. 26, 2025	Jan. 28, 2024
Segment Reporting Information [Line Items]
Segment operating income	$ 130,387	$ 81,453	$ 32,972
Stock-based compensation expense	(6,386)	(4,737)	(3,549)
Interest income	2,300	1,786	866
Interest expense	(259)	(247)	(257)
Other income, net	9,022	1,034	237
Income before income tax	141,450	84,026	33,818
All Other
Segment Reporting Information [Line Items]
Segment operating income	139,297	87,960	37,862
Stock-based compensation expense	(6,386)	(4,737)	(3,549)
Unallocated operating expenses	(1,997)	(1,171)	(728)
Acquisition-related and other costs	(527)	(599)	(613)
Interest income	2,300	1,786	866
Interest expense	(259)	(247)	(257)
Other income, net	9,022	1,034	237
Income before income tax	$ 141,450	$ 84,026	$ 33,818