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Segment Information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
Segment Information (Details) - USD ($) $ in Millions	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Oct. 29, 2017	Jul. 30, 2017	Apr. 30, 2017	Jan. 27, 2019	Jan. 28, 2018	Jan. 29, 2017
Segment Reporting Information [Line Items]
Revenue	$ 2,205	$ 3,181	$ 3,123	$ 3,207	$ 2,911	$ 2,636	$ 2,230	$ 1,937	$ 11,716	$ 9,714	$ 6,910
Depreciation and amortization expense									262	199	187
Operating income (loss)									3,804	3,210	1,934
All Other
Segment Reporting Information [Line Items]
Revenue									0	43	264
Depreciation and amortization expense									18	39	42
Operating income (loss)									(880)	(600)	(237)
GPU \| Operating segments
Segment Reporting Information [Line Items]
Revenue									10,175	8,137	5,822
Depreciation and amortization expense									197	123	116
Operating income (loss)									4,443	3,507	2,180
Tegra Processor \| Operating segments
Segment Reporting Information [Line Items]
Revenue									1,541	1,534	824
Depreciation and amortization expense									47	37	29
Operating income (loss)									$ 241	$ 303	$ (9)