Consolidated Statements of Equity (USD $) In Millions	Total USD ($)	Shares of Common Stock [Member]	Common Stock and Additional Paid-In Capital [Member] USD ($)	Retained Earnings [Member] USD ($)	Accumulated Other Comprehensive Income [Member] USD ($)	Total Cisco Shareholders' Equity [Member] USD ($)	Noncontrolling Interests [Member] USD ($)
BALANCE, Value at Jul. 25, 2009	$ 38,677		$ 34,344	$ 3,868	$ 435	$ 38,647	$ 30
BALANCE, Shares at Jul. 25, 2009		5,785
Net income	5,832			5,832		5,832
Change in:
Unrealized gains and losses on investments	225				233	233	(8)
Derivative instruments	(4)				(4)	(4)
Cumulative translation adjustment and other	12				12	12
Comprehensive income (loss)	6,065					6,073	(8)
Issuance of common stock, Shares		167
Issuance of common stock, Value	2,780		2,780			2,780
Repurchase of common stock, Shares		(230)
Repurchase of common stock, Value	(5,588)		(1,458)	(4,130)		(5,588)
Tax benefits/(effects) from employee stock incentive plans, including transfer pricing adjustments	710		710			710
Purchase acquisitions	82		82			82
Share-based compensation expense	1,126		1,126			1,126
BALANCE, Value at May. 01, 2010	43,852		37,584	5,570	676	43,830	22
BALANCE, Shares at May. 01, 2010		5,722
BALANCE, Value at Jul. 31, 2010	44,285		37,793	5,851	623	44,267	18
BALANCE, Shares at Jul. 31, 2010		5,655
Net income	5,258			5,258		5,258
Change in:
Unrealized gains and losses on investments	178				153	153	25
Derivative instruments	37				37	37
Cumulative translation adjustment and other	494				494	494
Comprehensive income (loss)	5,967					5,942	25
Issuance of common stock, Shares		110
Issuance of common stock, Value	1,516		1,516			1,516
Repurchase of common stock, Shares	(256)	(264)
Repurchase of common stock, Value	(5,442)		(1,879)	(3,563)		(5,442)
Cash dividends declared ($0.06 per common share)	(329)			(329)		(329)
Tax benefits/(effects) from employee stock incentive plans, including transfer pricing adjustments	(40)		(40)			(40)
Purchase acquisitions	12		12			12
Share-based compensation expense	1,237		1,237			1,237
BALANCE, Value at Apr. 30, 2011	$ 47,206		$ 38,639	$ 7,217	$ 1,307	$ 47,163	$ 43
BALANCE, Shares at Apr. 30, 2011		5,501