Comprehensive Income (AOCI components) (Details) (USD $) In Millions, unless otherwise specified			3 Months Ended
Oct. 25, 2014	Jul. 26, 2014	Oct. 25, 2014 Net Unrealized Gains on Investments	Oct. 26, 2013 Net Unrealized Gains on Investments	Oct. 25, 2014 Net Unrealized Gains (Losses) Cash Flow Hedging Instruments	Oct. 26, 2013 Net Unrealized Gains (Losses) Cash Flow Hedging Instruments	Oct. 25, 2014 Cumulative Translation Adjustment and Other	Oct. 26, 2013 Cumulative Translation Adjustment and Other	Oct. 25, 2014 Accumulated Other Comprehensive Income	Oct. 26, 2013 Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance	$ 451	$ 677	$ 424	$ 379	$ (12)	$ 8	$ 265	$ 221	$ 677	$ 608
Other comprehensive income (loss) before reclassifications attributable to Cisco Systems, Inc.			(36)	170	(56)	38	(161)	76	(253)	284
(Gains) losses reclassified out of other comprehensive income			(7)	(83)	4	(9)	0	0	(3)	(92)
Tax benefit (expense)			16	(22)	3	(3)	11	(3)	30	(28)
Balance	$ 451	$ 677	$ 397	$ 444	$ (61)	$ 34	$ 115	$ 294	$ 451	$ 772

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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