Balance Sheet Components (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 28, 2019	Apr. 29, 2018	Jan. 27, 2019
Inventories:
Raw materials	$ 484		$ 613
Work in-process	189		238
Finished goods	753		724
Total inventories	1,426		1,575
Accrued and Other Current Liabilities:
Customer program accruals	263		302
Accrued payroll and related expenses	136		186
Taxes payable	107		91
Deferred revenue	85		92
Less short-term operating lease liabilities	80		0
Accrued legal settlement costs	25		24
Licenses payable	23		12
Warranty accrual	18		18
Professional service fees	10		14
Coupon interest on debt obligations	7		20
Accrued royalties	6		10
Other	55		49
Total accrued and other current liabilities	815		818
Other Long-Term Liabilities:
Income taxes payable	524		513
Deferred revenue	49		46
Licenses payable	34		1
Employee benefits liability	21		20
Deferred income tax liability	21		19
Deferred rent	0		21
Other	11		13
Total other long-term liabilities	660		$ 633
One time transition tax payable, noncurrent	351
Unrecognized tax benefits	151
Interest and penalties related to unrecognized tax benefits	22
Movement in Deferred Revenue [Roll Forward]
Balance at beginning of period	138	$ 63
Deferred revenue added during the period	49	86
Revenue recognized during the period	(53)	(75)
Balance at end of period	$ 134	$ 74