Consolidated Statements Of Equity - USD ($) shares in Millions, $ in Millions	Total	Shares of Common Stock	Common Stock and Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total Cisco Shareholders’ Equity	Non-controlling Interests
Beginning balance (in shares) at Jul. 25, 2015		5,085
Beginning balance at Jul. 25, 2015	$ 59,707		$ 43,592	$ 16,045	$ 61	$ 59,698	$ 9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,430			2,430		2,430
Other comprehensive income (loss)	(314)				(313)	(313)	(1)
Issuance of common stock (in shares)		57
Issuance of common stock	385		385			385
Repurchase of common stock (in shares)		(45)
Repurchase of common stock	$ (1,207)		(386)	(821)		(1,207)
Shares repurchased for tax withholdings on vesting of restricted stock units (in shares)	(15)	(15)
Shares repurchased for tax withholdings on vesting of restricted stock units	$ (382)		(382)			(382)
Cash dividends declared (per common share)	(1,068)			(1,068)		(1,068)
Tax effects from employee stock incentive plans	39		39			39
Share-based compensation	376		376			376
Purchase acquisitions and other	19		19			19
Ending Balance (in shares) at Oct. 24, 2015		5,082
Ending Balance at Oct. 24, 2015	59,985		43,643	16,586	(252)	59,977	8
Beginning balance (in shares) at Jul. 30, 2016		5,029
Beginning balance at Jul. 30, 2016	63,585		44,516	19,396	(326)	63,586	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,322			2,322		2,322
Other comprehensive income (loss)	(190)				(198)	(198)	8
Issuance of common stock (in shares)		40
Issuance of common stock	$ 88		88			88
Repurchase of common stock (in shares)	(32)	(32)
Repurchase of common stock	$ (1,001)		(285)	(716)		(1,001)
Shares repurchased for tax withholdings on vesting of restricted stock units (in shares)	(13)	(13)
Shares repurchased for tax withholdings on vesting of restricted stock units	$ (401)		(401)			(401)
Cash dividends declared (per common share)	(1,308)			(1,308)		(1,308)
Tax effects from employee stock incentive plans	(60)		(60)			(60)
Share-based compensation	372		372			372
Purchase acquisitions and other	6		6			6
Ending Balance (in shares) at Oct. 29, 2016		5,024
Ending Balance at Oct. 29, 2016	$ 63,413		$ 44,236	$ 19,694	$ (524)	$ 63,406	$ 7