The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Derivative Instruments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 27, 2013	Jul. 27, 2013 Derivatives Designated As Cash Flow Hedges	Jul. 27, 2013 Net Investment Hedging [Member]	Jul. 27, 2013 Interest Rate Swaps 4.95 percent fixed-rate notes [Member]	Jul. 27, 2013 Interest Rate Swaps 4.45 percent fixed-rate notes [Member]	Jul. 27, 2013 Interest Rate Swaps 1.625 percent fixed-rate notes [Member]	Jul. 27, 2013 Interest Rate Swaps 3.15 percent fixed-rate notes [Member]	Jul. 30, 2011 Interest Rate Swaps 5.5 percent fixed-rate notes [Member]
Derivative [Line Items]
Net derivative gains to be reclassified from AOCI into earnings in next twelve months	$ 20
Foreign currency cash flow hedges maturity period, maximum, months		0 years 18 months	6 months
Debt Instrument, Maturity Date				Feb. 15, 2019	Jan. 15, 2020	Mar. 14, 2014	Mar. 14, 2017	Feb. 22, 2016