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Segment Information - Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 26, 2020	Oct. 27, 2019	Jul. 28, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 26, 2020	Jan. 27, 2019	Jan. 28, 2018
Segment Reporting Information [Line Items]
Revenue	$ 3,105	$ 3,014	$ 2,579	$ 2,220	$ 2,205	$ 3,181	$ 3,123	$ 3,207	$ 10,918	$ 11,716	$ 9,714
Depreciation and amortization expense									381	262	199
Operating income (loss)									2,846	3,804	3,210
All Other
Segment Reporting Information [Line Items]
Revenue									0	0	43
Depreciation and amortization expense									15	18	39
Operating income (loss)									(1,156)	(880)	(600)
GPU \| Operating segments
Segment Reporting Information [Line Items]
Revenue									9,465	10,175	8,137
Depreciation and amortization expense									322	197	123
Operating income (loss)									3,806	4,443	3,507
Tegra Processor \| Operating segments
Segment Reporting Information [Line Items]
Revenue									1,453	1,541	1,534
Depreciation and amortization expense									44	47	37
Operating income (loss)									$ 196	$ 241	$ 303