Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 25, 2026	Jan. 26, 2025	Jan. 28, 2024
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
US Federal Statutory Tax Rate	$ 29,704	$ 17,645	$ 7,102
State income taxes, net of federal tax effect	258	554	120
Foreign-derived deduction eligible income	(4,208)	(2,976)	(1,408)
Stock-based compensation	(1,475)	(2,097)	(741)
U.S. federal research and development tax credit		(990)	(431)
Foreign tax rate differential		(984)	(467)
Other	(133)	(6)	(117)
Income tax expense	$ 21,383	$ 11,146	$ 4,058
Effective Income Tax Rate Reconciliation, Percent [Abstract]
US Federal Statutory Tax Rate	21.00%	21.00%	21.00%
State income taxes, net of federal tax effect	0.20%	0.70%	0.40%
Foreign-derived deduction eligible income	(3.00%)	(3.50%)	(4.20%)
Stock-based compensation	(1.00%)	(2.50%)	(2.20%)
U.S. federal research and development tax credit		(1.20%)	(1.30%)
Foreign tax rate differential		(1.20%)	(1.40%)
Other	(0.10%)	0.00%	(0.30%)
Income tax expense	15.10%	13.30%	12.00%