v2.4.0.6

Consolidated Variable Interest Entities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended				12 Months Ended						3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended
	Mar. 01, 2012	Mar. 03, 2011	Mar. 01, 2012	Mar. 03, 2011	Feb. 24, 2012	Sep. 01, 2011	Aug. 31, 2006 Nonsoftware License Arrangement with Photronics [Member]	Mar. 01, 2012 Nonsoftware License Arrangement with Photronics [Member]	Sep. 01, 2011 Nonsoftware License Arrangement with Photronics [Member]	Mar. 01, 2012 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash Technologies, LLC [Member]	Mar. 01, 2012 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash Singapore LLP [Member]	Dec. 02, 2010 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash Singapore LLP [Member]	Mar. 01, 2012 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member]	Mar. 03, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member]	Mar. 01, 2012 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member]	Mar. 03, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member]	Mar. 01, 2012 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member] Intel [Member]	Mar. 03, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member] Intel [Member]	Mar. 01, 2012 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member] Intel [Member]	Mar. 03, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member] Intel [Member]	Sep. 01, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash [Member] Intel [Member]	Dec. 01, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] MP Mask Technology Center, LLC [Member]	Mar. 01, 2012 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] MP Mask Technology Center, LLC [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage (in hundredths)										51.00%	82.00%												50.01%
Variable interest entity, ownership percentage by noncontrolling owners (in hundredths)										49.00%	18.00%												49.99%
Micron share of IMFS cost and supply											78.00%	51.00%
Net sales	$ 2,009	$ 2,257	$ 4,099	$ 4,509													$ 255	$ 202	$ 516	$ 411
Trade Receivables	913		913			1,105											145		145		165
R and D expenses reduced by reimbursements from Intel	20	23	42	46
Proceeds for entering into license agreement with Photronics							72
Term of license agreement with Photronics (in years)							10Y
Deferred income and other noncurrent liabilities related to license agreement with Photronics								30	34
Sale proceeds for facility sold to Photronics					35
Distributions to, and contributions from, shareholders [Abstract]
Distributions to Micron from consolidated VIE's													67	53	153	104
Distributions to noncontrolling interests from consolidated VIE's			147	99									64	50	147	99
Micron contributions to consolidated VIE's													0	343	103	735						8
Cash received from noncontrolling interests			$ 138	$ 4									$ 0	$ 0	$ 131	$ 0						$ 7

X

- Definition

Micron share of IMFS cost and supply

+ References

No definition available.

+ Details

Name:	mu_EntityShareOfSubsidiaryCostAndSupply
Namespace Prefix:	mu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Reasearch and development expenses reduced by reimburesments for product design and other NAND Flash research and development costs equally shared with third party.

+ References

No definition available.

+ Details

Name:	mu_RdExpensesReducedByReimbursementsFromThirdParty
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	mu_VariableInterestEntityDistributionsToAndContributionsFromShareholdersAbstract
Namespace Prefix:	mu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Distributions from variable interest entity to parent reporting entity.

+ References

No definition available.

+ Details

Name:	mu_VariableInterestEntityDistributionsToParent
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of the VIE's voting interest owned by the entity. In general, a VIE is a corporation, partnership, trust, or any other legal structure used for business purposes that either does not have equity investors with voting rights or has equity investors that do not provide sufficient financial resources for the entity to support its activities.

+ References

No definition available.

+ Details

Name:	mu_VariableInterestEntityOwnershipPercentageByEntity
Namespace Prefix:	mu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The term of the licensing agreement with Photronics to produce photomasks for leading-edge and advanced next generation semiconductors.

+ References

No definition available.

+ Details

Name:	mu_VariableInterestEntityTermOfLicensingAgreement
Namespace Prefix:	mu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph a(1)

-Article 5



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 4

-Article 5



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3-4)

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

+ Details

Name:	us-gaap_AccountsReceivableNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

+ References

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response)

-URI http://asc.fasb.org/extlink&oid=6600647&loc=d3e214044-122780

+ Details

Name:	us-gaap_DeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 17

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash outflow to return capital to noncontrolled interest, which generally occurs when noncontrolling shareholders reduce their ownership stake (in a subsidiary of the entity). This element does not include dividends paid to noncontrolling shareholders.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-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 95

-Paragraph 20

-Subparagraph a

-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 Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_PaymentsToMinorityShareholders
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Cash received from licensees for license fees during the current period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 27

-Subparagraph a

-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 Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585

+ Details

Name:	us-gaap_ProceedsFromLicenseFeesReceived
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash inflow contributed by noncontrolled interest that purchase additional shares or otherwise increase their ownership stake in a subsidiary of the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228



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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 18

-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 95

-Paragraph 19

-Subparagraph a

-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

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromMinorityShareholders
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

-Section 03

-Paragraph 1



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The value of all consideration given or received by the Entity in the significant acquisition or disposal.

+ References

No definition available.

+ Details

Name:	us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_VariableInterestEntityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration