Supplemental Information (Stock Repurchases Since Inception of Program) (Details) - USD ($) shares in Millions |
Oct. 29, 2016 |
Jul. 30, 2016 |
|---|---|---|
| Supplementary Information [Line Items] | ||
| Authorized common stock repurchase amount | $ 112,000,000,000 | |
| Repurchases of common stock under the repurchase program (in shares) | 4,623 | 4,591 |
| Repurchases of common stock under the repurchase program | $ 97,598,000,000 | $ 96,597,000,000 |
| Shares of Common Stock (in shares) | ||
| Supplementary Information [Line Items] | ||
| Repurchases of common stock under the repurchase program (in shares) | 4,623 | |
| Common Stock and Additional Paid-In Capital | ||
| Supplementary Information [Line Items] | ||
| Repurchases of common stock under the repurchase program | $ 24,180,000,000 | |
| Retained Earnings | ||
| Supplementary Information [Line Items] | ||
| Repurchases of common stock under the repurchase program | 73,418,000,000 | |
| Total Cisco Shareholders’ Equity | ||
| Supplementary Information [Line Items] | ||
| Repurchases of common stock under the repurchase program | $ 97,598,000,000 |