v2.4.1.9

Equity - Capped Calls (Details) (Call Option [Member], Purchased options [Member], Convertible Debt [Member], USD $) | 3 Months Ended
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Dec. 04, 2014
Minimum [Member] |
Option Indexed to Issuer's Equity [Line Items] |
Option indexed to issuer's equity, strike price (in dollars per share) | $ 9.50 us-gaap_OptionIndexedToIssuersEquityStrikePrice1 / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember / us-gaap_OptionIndexedToIssuersEquityEquityAxis = us-gaap_CallOptionMember / us-gaap_PositionAxis = us-gaap_LongMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Option Indexed to Issuer's Equity, capped ceiling | $ 0 mu_CallOptionIndexedToIssuersEquityCappedCeiling / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember / us-gaap_OptionIndexedToIssuersEquityEquityAxis = us-gaap_CallOptionMember / us-gaap_PositionAxis = us-gaap_LongMember / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum [Member] |
Option Indexed to Issuer's Equity [Line Items] |
Option indexed to issuer's equity, strike price (in dollars per share) | $ 10.93 us-gaap_OptionIndexedToIssuersEquityStrikePrice1 / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember / us-gaap_OptionIndexedToIssuersEquityEquityAxis = us-gaap_CallOptionMember / us-gaap_PositionAxis = us-gaap_LongMember / us-gaap_RangeAxis = us-gaap_MaximumMember
Option Indexed to Issuer's Equity, capped ceiling | $ 864,000,000 mu_CallOptionIndexedToIssuersEquityCappedCeiling / us-gaap_LongtermDebtTypeAxis = us-gaap_ConvertibleDebtMember / us-gaap_OptionIndexedToIssuersEquityEquityAxis = us-gaap_CallOptionMember / us-gaap_PositionAxis = us-gaap_LongMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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

X
- 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