Micron share of IMFS cost and supply

Name:	mu_Entityshareofsubsidiarycostandsupply
Namespace Prefix:	mu
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The delay in the corresponding change in our right to receive output from the date of the contribution.

+ Details

Name:	mu_LagOnChangeInOwnershipOnRightToReceiveOutput
Namespace Prefix:	mu
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

f9cfc270-9914-11e0-bba0-12313b06a4a2

+ Details

Name:	mu_ReceivablesFromAndPayablesToNoncontrollingOwnerAbstract
Namespace Prefix:	mu
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Receivable balance of a consolidated variable interest entity due from a noncontrolling owner related to NAND Flash sales.

+ Details

Name:	mu_ReceivablesFromNoncontrollingOwnerForNetSales
Namespace Prefix:	mu
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reimbursements made by noncontrolling owner to Variable interest entity recorded as a reduction to R and D expense.

+ Details

Name:	mu_VariableInterestEntityActivityReimbursementsFromNoncontrollingOwner
Namespace Prefix:	mu
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Sales made by the Variable interest entity to a noncontrolling owner.

+ Details

Name:	mu_VariableInterestEntityActivitySalesToNoncontrollingOwner
Namespace Prefix:	mu
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

f990a37e-9914-11e0-bba0-12313b06a4a2

+ Details

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

- Definition

Distributions from variable interest entity to parent reporting entity.

+ Details

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

- 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.

+ Details

Name:	mu_VariableInterestEntityOwnershipPercentageByEntity
Namespace Prefix:	mu
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of the VIE's voting interest owned by noncontrolling owners. 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.

+ Details

Name:	mu_VariableInterestEntityOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	mu
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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

+ Details

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

- 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 Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 18

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 20
-Subparagraph a

+ Details

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

- 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

+ Details

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

- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section H

+ Details

Name:	us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix:	us-gaap
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

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

Consolidated Variable Interest Entities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended
	Jun. 02, 2011	Jun. 03, 2010	Jun. 02, 2011	Jun. 03, 2010	Sep. 02, 2010	Jun. 02, 2011 IM Flash [Member] Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member]	Jun. 03, 2010 IM Flash [Member] Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member]	Jun. 02, 2011 IM Flash [Member] Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member]	Jun. 03, 2010 IM Flash [Member] Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member]	Jun. 02, 2011 MP Mask Technology Center, LLC [Member] Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member]	Jun. 02, 2011 MP Mask Technology Center, LLC [Member] Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member]	Jun. 30, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash Singapore LLP [Member]	Jun. 02, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash Singapore LLP [Member]	Jun. 02, 2011 Variable Interest Entities Which We Have Determined That We Are the Primary Beneficiary [Member] IM Flash Technologies, LLC [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage (in hundredths)										50.01%	50.01%		83.00%	51.00%
Variable interest entity, ownership percentage by noncontrolling owners (in hundredths)										49.99%	49.99%		17.00%	49.00%
Lag on change in ownership on right to receive Output (in months)													12M
Micron share of IMFS cost and supply													53.00%
Micron contributions to consolidated VIE's						$ 409	$ 26	$ 1,144	$ 51	$ 5	$ 9	$ 421
Ownership percentage after stock transactions during period (in hundredths)												86.00%
R and D expenses reduced by reimbursements from Intel	25	24	71	79
IM Flash sales to Intel	218	204	629	569
Receivables from and payables to Intel: [Abstract]
Receivables from Intel for net sales	136		136		128
IM Flash's distributions to, and contributions from, shareholders [Abstract]
IM Flash distributions to Micron						62	75	166	254
IM Flash distributions to Intel			159	244		60	72	159	244
Micron contributions to consolidated VIE's						409	26	1,144	51	5	9	421
Cash received from noncontrolling interests			$ 8	$ 24		$ 0	$ 24	$ 0	$ 24	$ 4	$ 8