Fair Value Measurements - Assets measured (Details) (USD $) In Millions, unless otherwise specified	Nov. 29, 2012	Aug. 30, 2012
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	$ 169	$ 100
Long-term marketable investments	527	374
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	1,843	2,220
Short-term investments	169	100
Long-term marketable investments	527	374
Assets held for sale	25	25
Total assets measured at fair value on a recurring basis	2,564	2,719
Money market funds [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	1,733	2,159
Commercial paper [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	48	29
Certificates of deposit [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	47	27
Short-term investments	5	4
Government securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	10	5
Short-term investments	99	51
Long-term marketable investments	113	88
Corporate bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	5	0
Short-term investments	45	31
Long-term marketable investments	293	203
Commercial Paper, Not Included with Cash and Cash Equivalents [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	16	10
Asset-backed securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	4	4
Long-term marketable investments	109	73
Marketable equity securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Long-term marketable investments	12	10
Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	1,733	2,159
Short-term investments	0	0
Long-term marketable investments	6	5
Assets held for sale	0	0
Total assets measured at fair value on a recurring basis	1,739	2,164
Level 1 [Member] \| Money market funds [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	1,733	2,159
Level 1 [Member] \| Commercial paper [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Level 1 [Member] \| Certificates of deposit [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Level 1 [Member] \| Government securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Long-term marketable investments	0	0
Level 1 [Member] \| Corporate bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Long-term marketable investments	0	0
Level 1 [Member] \| Commercial Paper, Not Included with Cash and Cash Equivalents [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	0	0
Level 1 [Member] \| Asset-backed securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	0	0
Long-term marketable investments	0	0
Level 1 [Member] \| Marketable equity securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Long-term marketable investments	6	5
Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	110	61
Short-term investments	169	100
Long-term marketable investments	521	369
Assets held for sale	0	0
Total assets measured at fair value on a recurring basis	800	530
Level 2 [Member] \| Money market funds [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Level 2 [Member] \| Commercial paper [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	48	29
Level 2 [Member] \| Certificates of deposit [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	47	27
Short-term investments	5	4
Level 2 [Member] \| Government securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	10	5
Short-term investments	99	51
Long-term marketable investments	113	88
Level 2 [Member] \| Corporate bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	5	0
Short-term investments	45	31
Long-term marketable investments	293	203
Level 2 [Member] \| Commercial Paper, Not Included with Cash and Cash Equivalents [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	16	10
Level 2 [Member] \| Asset-backed securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	4	4
Long-term marketable investments	109	73
Level 2 [Member] \| Marketable equity securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Long-term marketable investments	6	5
Level 3 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Long-term marketable investments	0	0
Assets held for sale	25	25
Total assets measured at fair value on a recurring basis	25	25
Level 3 [Member] \| Money market funds [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Level 3 [Member] \| Commercial paper [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Level 3 [Member] \| Certificates of deposit [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Level 3 [Member] \| Government securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Long-term marketable investments	0	0
Level 3 [Member] \| Corporate bonds [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Cash equivalents	0	0
Short-term investments	0	0
Long-term marketable investments	0	0
Level 3 [Member] \| Commercial Paper, Not Included with Cash and Cash Equivalents [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	0	0
Level 3 [Member] \| Asset-backed securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Short-term investments	0	0
Long-term marketable investments	0	0
Level 3 [Member] \| Marketable equity securities [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Long-term marketable investments	$ 0	$ 0

Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

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

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section A

-Paragraph 4, 5

-Chapter 3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 16

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15C

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 13, 17

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15D

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 22

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562

+ Details

- Definition

Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income.

+ References

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15E

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15C

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 15D

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

+ References+ Details