Equity - Capped Calls (Details) - 9 months ended Jun. 04, 2015 - Call Option [Member] - Purchased options [Member] - Convertible Debt [Member] - USD ($)	Total
Minimum [Member]
Option Indexed to Issuer's Equity [Line Items]
Option indexed to Issuer's Equity, strike price (in dollars per share)	$ 9.50
Option Indexed to Issuer's Equity, capped ceiling	$ 12.67
Option Indexed To Issuers Equity Settlement Proceeds	$ 0
Maximum [Member]
Option Indexed to Issuer's Equity [Line Items]
Option indexed to Issuer's Equity, strike price (in dollars per share)	$ 10.93
Option Indexed to Issuer's Equity, capped ceiling	$ 16.04
Option Indexed To Issuers Equity Settlement Proceeds	$ 864,000,000

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.

No definition available.

+ Details

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

- Definition

Upon the settlement of the capped call transaction, the amount represents the proceeds that could be received.

+ References

No definition available.

+ Details

Name:	mu_OptionIndexedToIssuersEquitySettlementProceeds
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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.

+ References

No definition available.

+ Details

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

- Definition

Exercise or strike price stated in the contract for options indexed to the issuer's equity shares.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(1)

-URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879

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_OptionIndexedToIssuersEquityStrikePrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_OptionIndexedToIssuersEquityEquityAxis=us-gaap_CallOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PositionAxis=us-gaap_LongMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: