v2.4.0.6

Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Mar. 01, 2012	Mar. 03, 2011	Sep. 01, 2011
Intangible Assets [Abstract]
Gross Amount	$ 718		$ 699
Accumulated Amortization	(318)		(285)
Product and process technology [Member]
Intangible Assets [Abstract]
Gross Amount	590		571
Accumulated Amortization	(228)		(203)
Product and process technology intangible asset capitalized during period	30	24
Product and process technology intangible asset capitalized during period, weighted-average useful lives (in years)	9Y	9Y
Customer relationships [Member]
Intangible Assets [Abstract]
Gross Amount	127		127
Accumulated Amortization	(90)		(82)
Other [Member]
Intangible Assets [Abstract]
Gross Amount	1		1
Accumulated Amortization	$ 0		$ 0

X

- Definition

The weighted-average useful lives of product and process technology intangible asset capitalized during the period.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of capitalized costs incurred in the period related to 1) intellectual property that has been acquired from third parties 2) the exclusive legal right granted by the government to the entity for its patented product and process technology and 3) technology-based intangible assets such as innovations or scientific advances that have not been patented.

+ References

No definition available.

+ Details

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

X

- Definition

The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

+ Details

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

X

- Definition

Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-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 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

+ Details

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

X

- Details

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