v2.4.0.6

Micron Shareholders' Equity and Noncontrolling Interests in Subsidiaries Shareholders' Equity - Capped Call Transactions (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Nov. 29, 2012	Dec. 01, 2011
Option Indexed to Issuer's Equity [Line Items]
Option indexed to issuers equity cash received upon settlement	$ 24	$ 0
Purchased Call Option [Member] | 2013 convertible senior notes [Member]
Option Indexed to Issuer's Equity [Line Items]
Option indexed to issuer's equity, shares (in shares)	45.2
Option indexed to issuer's equity, strike price (in dollars per share)	5.08
Option Indexed to Issuer's Equity, capped ceiling	$ 6.64

X

- Definition

The cap price on a call option indexed to the entities own stock. A payment or receipt is triggered if the entities stock price is above the initial strike price with maximim proceeds dictated by the stated cap price.

+ References

No definition available.

+ Details

Name:	mu_CallOptionIndexedToIssuersEquityCappedCeiling
Namespace Prefix:	mu_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The cash received upon the cash settlement of the options the entity bought which indexed to the company's own stock.

+ References

No definition available.

+ Details

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

X

- Details

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

X

- Definition

The maximum number of shares that could be issued to net share settle a contract, if applicable. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, disclose the fact that a potentially infinite number of shares could be issued to settle the contract.

+ References

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 00-19

-Paragraph 50

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 815

-SubTopic 40

-Section 50

-Paragraph 5

-Subparagraph (b)(2),(c)

-URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008

+ Details

Name:	us-gaap_OptionIndexedToIssuersEquityShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The exercise (or strike) price stated in the contract. The fixed price at which the option holder can purchase, in the case of a call option, or sell, in the case of a put option, on the underlying security.

+ References

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

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 00-19

-Paragraph 50

-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 815

-SubTopic 40

-Section 50

-Paragraph 5

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008

+ Details

Name:	us-gaap_OptionIndexedToIssuersEquityStrikePrice
Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration