Contingencies (Details) - Pending Litigation [Member] $ in Millions	3 Months Ended
Dec. 03, 2015 USD ($) integer
Qimonda AG Inotera Share Purchase Proceedings [Member] \| Inotera [Member]
Loss Contingencies [Line Items]
Inotera Investment, Percentage of shares owned subject to litigation (in hundredths)	55.00%
Loss contingency, judgment under appeal	$ 1
Carrying value of Inotera shares acquired from Qimonda	664
Quoted market value of Inotera shares acquired from Qimonda	$ 855
Patent Matters [Member] \| Elm 3DS Innovations, LLC [Member]
Loss Contingencies [Line Items]
Number of patents allegedly infringed \| integer	13
Patent Matters [Member] \| Innovative Memory Solutions, Inc. [Member]
Loss Contingencies [Line Items]
Number of patents allegedly infringed \| integer	8

Equity Method Investment Net Carrying Value Of Shares Subject to Litigation

No definition available.

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- Definition

This item represents the aggregate value of each identified investment accounted for under the equity method of accounting subject to litigation based on the quoted market price for those investments in common stock for which a quoted market price is available.

+ References

No definition available.

+ Details

Name:	mu_EquityMethodInvestmentQuotedMarketValueOfSharesSubjecttoLitigation
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The approximate percentage of shares of an equity method investment owned by the entity which are currently subject to litigation.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Loss contingency resulting from a judgment that is currently under appeal. While not probable as of the reporting date, this judgment could result in an obligation to pay the disclosed amount.

+ References

No definition available.

+ Details

Name:	mu_LossContingencyJudgmentUnderAppeal
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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- Definition

Number of another entity's patents that the entity has allegedly infringed.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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