Goodwill and Purchased Intangible Assets (Schedule Of Goodwill By Reportable Segments) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jul. 28, 2012	Jul. 30, 2011
Goodwill [Line Items]
Balance, Beginning	$ 16,818	$ 16,674
Acquisitions	237	184
Other	(57)	(40)
Balance, ending	16,998	16,818
Americas
Goodwill [Line Items]
Balance, Beginning	11,627	11,571
Acquisitions	136	122
Other	(8)	(66)
Balance, ending	11,755	11,627
EMEA
Goodwill [Line Items]
Balance, Beginning	3,272	3,209
Acquisitions	64	38
Other	(49)	25
Balance, ending	3,287	3,272
APJC
Goodwill [Line Items]
Balance, Beginning	1,919	1,894
Acquisitions	37	24
Other		1
Balance, ending	$ 1,956	$ 1,919

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details

- Definition

The increase (decrease) in the recorded value of goodwill for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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