Balance Sheet Components (Details) (USD $) In Millions, unless otherwise specified	Apr. 26, 2015		Jan. 25, 2015
Inventories
Raw materials	$ 151		$ 157
Work in-process	73		92
Finished goods	214		234
Total inventories	438		483
Outstanding Inventory Purchase Obligations	398
Accrued Liabilities and Other Current Liabilities
Unearned Revenue	377	[1]	296	[1]
Customer related liabilities	127	[2]	143	[2]
Accrued payroll and related expenses	87		112
Professional service fees	26		17
Warranty accrual	13	[3]	8	[3]
Facilities related liabilities	2		8
Coupon interest on Notes	6		3
Taxes payable	4		3
Other	19		13
Total accrued and other current liabilities	661		603
Other Long-Term Liabilities
Deferred income tax liability	254		232
Income taxes payable, long-term	121		121
Deferred Revenue, long-term	42		108
Asset retirement obligation	7		7
Other	24		21
Total other long-term liabilities	$ 448		$ 489

[1] This primarily includes deferred revenue.

[2] This primarily includes accrued customer programs. Please refer to Note 1 of the Notes to the Consolidated Financial Statements in our Annual Report on Form 10-K for the fiscal year ended January 25, 2015, for discussion regarding the nature of accrued customer programs and their accounting treatment related to our revenue recognition policies and estimates.

[3] Please refer to Note 9 of these Notes to Condensed Consolidated Financial Statements for discussion regarding the warranty accrual.