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Derivative Instruments (Effect Of Derivative Instruments Designated As Fair Value Hedges And Underlying Hedged Items On Consolidated Statements Of Operations) (Details) (Derivatives Designated as Fair Value Hedging Instruments, USD $)
In Millions, unless otherwise specified
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3 Months Ended |
9 Months Ended |
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Apr. 25, 2015
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Apr. 26, 2014
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Apr. 25, 2015
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Apr. 26, 2014
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| Hedge Underlying Gain Loss [Line Items] |
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| GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED |
$ (17)us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings |
$ 0us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings |
$ 102us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings |
$ (82)us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings |
| GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED |
17us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1 |
0us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1 |
(105)us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1 |
81us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1 |
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Equity derivatives | Other income (loss), net
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| Hedge Underlying Gain Loss [Line Items] |
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| GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED |
(8)us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember |
(8)us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember |
(20)us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember |
(55)us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember |
| GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED |
8us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember |
8us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember |
20us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
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/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember |
55us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember |
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Interest rate derivatives | Interest expense
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| Hedge Underlying Gain Loss [Line Items] |
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|
|
| GAINS (LOSSES) ON DERIVATIVE INSTRUMENTS FOR THE THREE MONTHS ENDED |
(9)us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember |
8us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember |
122us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember |
(27)us-gaap_GainLossOnFairValueHedgesRecognizedInEarnings
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember |
| GAINS (LOSSES) RELATED TO HEDGED ITEMS FOR THE THREE MONTHS ENDED |
$ 9us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember |
$ (8)us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_FairValueHedgingMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_InterestExpenseMember |
$ (125)us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
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/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
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$ 26us-gaap_ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
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= us-gaap_InterestExpenseMember |