Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 25, 2026	Jan. 26, 2025	Jan. 28, 2024
Income Tax Contingency [Line Items]
Deferred tax assets	$ 13,258	$ 10,979
Deferred tax liability	1,774	886
Undistributed earnings of foreign subsidiaries	1,400
Valuation allowance	768	1,610
Release of valuation allowance	711
Unrecognized tax benefits that would affect effective tax rate	3,700
Interest and taxes recognized related to unrecognized tax benefits	103	92	$ 42
Interest and penalties accrued	374	$ 251
Federal
Income Tax Contingency [Line Items]
Net operating loss carryforwards	747
Research tax credit carryforwards	56
Federal | Capital Loss Carryforward
Income Tax Contingency [Line Items]
Federal capital loss carryforwards	902
State
Income Tax Contingency [Line Items]
Net operating loss carryforwards	427
Research tax credit carryforwards	1,400
Foreign
Income Tax Contingency [Line Items]
Net operating loss carryforwards	503
California
Income Tax Contingency [Line Items]
Research tax credit carryforwards	1,300
Other states
Income Tax Contingency [Line Items]
Research tax credit carryforwards	$ 132