Balance Sheet Components - Deferred Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 25, 2026	Jan. 26, 2025
Movement in Deferred Revenue [Roll Forward]
Balance at beginning of period	$ 1,813	$ 1,337
Deferred revenue additions	11,137	5,083
Revenue recognized	(10,378)	(4,607)
Balance at end of period	2,572	1,813
Customer advances included in deferred revenue	9,000	3,600
Customer advances included in revenue recognized	$ 8,900	$ 3,700