Balance Sheet Components (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 26, 2020	Apr. 28, 2019	Jan. 26, 2020
Inventories:
Raw materials	$ 341		$ 249
Work in-process	287		265
Finished goods	500		465
Total inventories	1,128		979
Accrued and Other Current Liabilities:
Customer program accruals	444		462
Deferred revenue	174		141
Accrued payroll and related expenses	164		185
Operating lease liabilities	100		91
Licenses and royalties	78		66
Taxes payable	74		61
Product warranty and return provisions	25		24
Professional service fee	20		18
Other	63		49
Total accrued and other current liabilities	1,142		1,097
Other Long-Term Liabilities:
Income taxes payable	535		528
Licenses payable	84		110
Deferred revenue	67		60
Deferred income tax liability	32		29
Employee benefits liability	23		22
Other	33		26
Total other long-term liabilities	774		$ 775
One time transition tax payable, noncurrent	317
Unrecognized tax benefits	185
Interest and penalties related to unrecognized tax benefits	33
Change in Deferred Revenue
Balance at beginning of period	201	$ 138
Deferred revenue added during the period	110	49
Revenue recognized during the period	(70)	(53)
Balance at end of period	$ 241	$ 134