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Employee Benefit Plans (Summary Of Significant Ranges Of Outstanding And Exercisable Stock Options) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
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9 Months Ended |
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Apr. 25, 2015
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Jul. 26, 2014
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Jul. 27, 2013
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number Outstanding (in shares) |
112us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |
187us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |
276us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber |
| Weighted- Average Remaining Contractual Life (in Year/Month/Date)) |
1 year 3 months 18 days |
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| Weighted- Average Exercise Price per Share |
$ 28.26us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice |
$ 26.03us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice |
$ 24.44us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice |
| Aggregate Intrinsic Value |
$ 289us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue |
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| Number Exercisable, shares |
111us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber |
183us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber |
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| Weighted- Average Exercise Price per Share |
$ 28.68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice |
$ 26.50us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice |
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| Aggregate Intrinsic Value |
242us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1 |
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| $ 0.01 – 20.00 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number Outstanding (in shares) |
5us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_ZeroPointZeroOneToFifteenPointZeroZeroMember |
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| Weighted- Average Remaining Contractual Life (in Year/Month/Date)) |
4 years 7 months 6 days |
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| Weighted- Average Exercise Price per Share |
$ 6.46us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_ZeroPointZeroOneToFifteenPointZeroZeroMember |
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| Aggregate Intrinsic Value |
116us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_ZeroPointZeroOneToFifteenPointZeroZeroMember |
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| Number Exercisable, shares |
4us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_ZeroPointZeroOneToFifteenPointZeroZeroMember |
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| Weighted- Average Exercise Price per Share |
$ 8.51us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_ZeroPointZeroOneToFifteenPointZeroZeroMember |
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| Aggregate Intrinsic Value |
69us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_ZeroPointZeroOneToFifteenPointZeroZeroMember |
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| $ 20.01 – 25.00 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number Outstanding (in shares) |
24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyPointZeroOneToTwentyFivePointZeroZeroMember |
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| Weighted- Average Remaining Contractual Life (in Year/Month/Date)) |
7 months 6 days |
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| Weighted- Average Exercise Price per Share |
$ 22.99us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyPointZeroOneToTwentyFivePointZeroZeroMember |
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| Aggregate Intrinsic Value |
140us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyPointZeroOneToTwentyFivePointZeroZeroMember |
|
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| Number Exercisable, shares |
24us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyPointZeroOneToTwentyFivePointZeroZeroMember |
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| Weighted- Average Exercise Price per Share |
$ 22.99us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyPointZeroOneToTwentyFivePointZeroZeroMember |
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| Aggregate Intrinsic Value |
140us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyPointZeroOneToTwentyFivePointZeroZeroMember |
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| $ 25.01 – 30.00 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number Outstanding (in shares) |
15us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_A25.0130.00Member |
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| Weighted- Average Remaining Contractual Life (in Year/Month/Date)) |
1 year 3 months 18 days |
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| Weighted- Average Exercise Price per Share |
$ 26.79us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_A25.0130.00Member |
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| Aggregate Intrinsic Value |
33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_A25.0130.00Member |
|
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| Number Exercisable, shares |
15us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_A25.0130.00Member |
|
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| Weighted- Average Exercise Price per Share |
$ 26.79us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_A25.0130.00Member |
|
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| Aggregate Intrinsic Value |
33us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_A25.0130.00Member |
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| $ 30.01 – 35.00 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number Outstanding (in shares) |
68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyFivePointZeroOneToThirtyFivePointZeroZeroMember |
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| Weighted- Average Remaining Contractual Life (in Year/Month/Date)) |
1 year 3 months 18 days |
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| Weighted- Average Exercise Price per Share |
$ 32.16us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyFivePointZeroOneToThirtyFivePointZeroZeroMember |
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| Aggregate Intrinsic Value |
0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyFivePointZeroOneToThirtyFivePointZeroZeroMember |
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| Number Exercisable, shares |
68us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyFivePointZeroOneToThirtyFivePointZeroZeroMember |
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| Weighted- Average Exercise Price per Share |
$ 32.16us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyFivePointZeroOneToThirtyFivePointZeroZeroMember |
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| Aggregate Intrinsic Value |
$ 0us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= csco_TwentyFivePointZeroOneToThirtyFivePointZeroZeroMember |
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