Supplemental Information (Stock Repurchases Since Inception of Program) (Details) - USD ($) shares in Millions, $ in Millions	Feb. 10, 2016	Jan. 23, 2016	Jul. 25, 2015	[1]
Supplementary Information [Line Items]
Authorized common stock repurchase amount		$ 97,000
Cumulative stock repurchased and retired (in shares)		4,536	4,443
Repurchases of common stock under the repurchase program		$ 95,148	$ 92,679
Shares of Common Stock (in shares)
Supplementary Information [Line Items]
Cumulative stock repurchased and retired (in shares)		4,536
Common Stock and Additional Paid-In Capital
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program		$ 23,416
Retained Earnings
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program		71,732
Total Cisco Shareholders’ Equity
Supplementary Information [Line Items]
Repurchases of common stock under the repurchase program		$ 95,148
Additional authorized amount [Member] | Subsequent Event
Supplementary Information [Line Items]
Authorized common stock repurchase amount	$ 15,000

[1] There were $36 million of stock repurchases that were pending settlement as of July 25, 2015.