v2.4.1.9

Redeemable Convertible Notes (Details) (USD $) In Millions, unless otherwise specified	Dec. 04, 2014	Aug. 28, 2014
Debt Instrument [Line Items]
Redeemable convertible notes	$ 53mu_ConvertibleDebtEquity	$ 57mu_ConvertibleDebtEquity
2033E and 2033F convertible senior notes [Member]
Debt Instrument [Line Items]
Redeemable convertible notes	$ 53mu_ConvertibleDebtEquity / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033Member	$ 57mu_ConvertibleDebtEquity / us-gaap_DebtInstrumentAxis = mu_ConvertibleSeniorNotesDue2033Member

X

- Definition

The equity component of convertible debt that will be settled in cash upon conversion, which has been reclassified to mezzanine (temporary equity) because the debt is convertible at the reporting date. The amount is equal to the difference between the principal amount and the carrying value of the debt.

+ References

No definition available.

+ Details

Name:	mu_ConvertibleDebtEquity
Namespace Prefix:	mu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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

X

- Details

Name:	us-gaap_DebtInstrumentAxis=mu_ConvertibleSeniorNotesDue2033Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: