XML 118 R101.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Derivative Instruments - Fair Values (Details) shares in Millions, $ in Millions, ¥ in Billions | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2017 USD ($) shares | Nov. 30, 2017 d | Aug. 31, 2017 USD ($) shares | Aug. 31, 2017 JPY (¥) shares | Sep. 01, 2016 USD ($)
Not Designated as Hedging Instrument |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Liabilities | [1] | $ (52) |  | $ (52) |  |
Not Designated as Hedging Instrument | Forward Contracts |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts | [2] | 4,847 |  | $ 4,847 |  | $ 2,052
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Liabilities | [3] |  |  |  |  | (11)
Foreign Currency Cash Flow Hedges [Abstract] |  |  |  |  |  |
General maturity of non-designated currency forward contracts (in days) |  |  |  | 9 months |  |
Not Designated as Hedging Instrument | Forward Contracts | 2017 Reorganization Payment Instruments |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts | ¥ |  |  |  |  | ¥ 18 |
Not Designated as Hedging Instrument | Forward Contracts | 2018 Reorganization Payment Instruments |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts | ¥ |  |  |  |  | ¥ 28 |
Not Designated as Hedging Instrument | Forward Contracts | New Taiwan dollar |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts | [2] | 2,921 |  | $ 2,921 |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Liabilities | [3] | (2) |  | (2) |  |
Not Designated as Hedging Instrument | Forward Contracts | Yen |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts | [2] | 1,209 |  | 1,209 |  | 1,668
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Liabilities | [3] | 0 |  | 0 |  | (10)
Not Designated as Hedging Instrument | Forward Contracts | Singapore dollar |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts | [2] | 324 |  | 324 |  | 206
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Liabilities | [3] | 0 |  | 0 |  | 0
Not Designated as Hedging Instrument | Forward Contracts | Euro |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts | [2] | 368 |  | 368 |  | 93
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Liabilities | [3] | (2) |  | (2) |  | 0
Not Designated as Hedging Instrument | Forward Contracts | Other |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts | [2] | 25 |  | 25 |  | 85
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Liabilities | [3] | $ (1) |  | $ (1) |  | (1)
Not Designated as Hedging Instrument | Convertible notes settlement obligations |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Convertible Notes (in shares) | shares | [2] | 2 |  | 2 | 2 |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [4],[5] | $ 0 |  | $ 0 |  |
Fair Value of Liabilities | [1] | (47) |  | (47) |  |
Not Designated as Hedging Instrument | Accounts receivable |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 34 |  | 34 |  |
Not Designated as Hedging Instrument | Accounts receivable | Forward Contracts |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] |  |  |  |  | 0
Not Designated as Hedging Instrument | Accounts receivable | Forward Contracts | New Taiwan dollar |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 22 |  | 22 |  |
Not Designated as Hedging Instrument | Accounts receivable | Forward Contracts | Yen |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 5 |  | 5 |  | 0
Not Designated as Hedging Instrument | Accounts receivable | Forward Contracts | Singapore dollar |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 1 |  | 1 |  | 0
Not Designated as Hedging Instrument | Accounts receivable | Forward Contracts | Euro |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 5 |  | 5 |  | 0
Not Designated as Hedging Instrument | Accounts receivable | Forward Contracts | Other |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 1 |  | 1 |  | 0
Not Designated as Hedging Instrument | Other noncurrent assets |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [4] | 1 |  | 1 |  |
Not Designated as Hedging Instrument | Other noncurrent assets | Forward Contracts |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [4] |  |  |  |  | 0
Not Designated as Hedging Instrument | Other noncurrent assets | Forward Contracts | New Taiwan dollar |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [4] | 0 |  | 0 |  |
Not Designated as Hedging Instrument | Other noncurrent assets | Forward Contracts | Yen |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [4] | 1 |  | 1 |  | 0
Not Designated as Hedging Instrument | Other noncurrent assets | Forward Contracts | Singapore dollar |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [4] | 0 |  | 0 |  | 0
Not Designated as Hedging Instrument | Other noncurrent assets | Forward Contracts | Euro |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [4] | 0 |  | 0 |  | 0
Not Designated as Hedging Instrument | Other noncurrent assets | Forward Contracts | Other |  |  |  |  |  |
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [4] | 0 |  | 0 |  | 0
Designated as Hedging Instrument | Cash Flow Hedging | Forward Contracts |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts |  | 456 |  | 456 |  | 172
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 17 |  | 17 |  | 2
Fair Value of Liabilities | [3] | 0 |  | $ 0 |  | (2)
Foreign Currency Cash Flow Hedges [Abstract] |  |  |  |  |  |
General maturity of hedge contracts (in months) |  |  |  | 12 months |  |
Designated as Hedging Instrument | Cash Flow Hedging | Forward Contracts | Yen |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts |  | 258 |  | $ 258 |  | 107
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 4 |  | 4 |  | 2
Fair Value of Liabilities | [3] | 0 |  | 0 |  | (1)
Designated as Hedging Instrument | Cash Flow Hedging | Forward Contracts | Euro |  |  |  |  |  |
Notional Disclosures [Abstract] |  |  |  |  |  |
Notional Amount, Forward Contracts |  | 198 |  | 198 |  | 65
Derivative, Fair Value, Net [Abstract] |  |  |  |  |  |
Fair Value of Assets | [5] | 13 |  | 13 |  | 0
Fair Value of Liabilities | [3] | 0 |  | $ 0 |  | $ (1)
Convertible Debt | 2033E Notes |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Principle amount of 2033E Notes elected to be settled in cash |  | $ 16 |  |  |  |
Subsequent Event | Convertible Debt | 2033E Notes |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |
Derivative, Term of Contract, Consecutive Trading Days | d |  |  | 20 |  |  |
[1] | Included in accounts payable and accrued expenses – other for forward contracts and in current debt for convertible notes settlement obligations.
[2] | Notional amounts of forward contracts in U.S. dollars and convertible notes settlement obligations in shares.
[3] | Included in accounts payable and accrued expenses – other
[4] | Included in other noncurrent assets.
[5] | Included in receivables – other.

X
- Definition Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNonmonetaryNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The principle amount of debt elected by the issuer to be settled in cash + References No definition available. + Details
Name: | mu_ConvertibleDebtConversionPrincipleAmountElectedtobeSettledinCash
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of consecutive trading days of volume-weighted-average price of our common stock for derivative debt liability settlement valuations. + References No definition available. + Details
Name: | mu_DerivativeTermofContractConsecutiveTradingDays
Namespace Prefix: | mu_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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_DerivativesFairValueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ForeignCurrencyCashFlowHedgesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
Name: | us-gaap_MaximumLengthOfTimeForeignCurrencyCashFlowHedge
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_MaximumRemainingMaturityOfForeignCurrencyDerivatives1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NotionalAmountOfDerivativesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentHoldingAxis=mu_A2017ReorganizationPaymentInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentHoldingAxis=mu_A2018ReorganizationPaymentInstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CurrencyAxis=currency_TWD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CurrencyAxis=currency_JPY
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CurrencyAxis=currency_SGD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CurrencyAxis=currency_EUR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CurrencyAxis=mu_OtherCurrencyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=mu_ConvertiblenotessettlementobligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mu_ConvertibleSeniorNotesDue2033EMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |