Redeemable Convertible Notes (Details) (USD $) In Millions, unless otherwise specified	Mar. 05, 2015	Aug. 28, 2014
Debt Instrument [Line Items]
Redeemable convertible notes	$ 51mu_ConvertibleDebtEquity	$ 57mu_ConvertibleDebtEquity
2033E and 2033F convertible senior notes [Member]
Debt Instrument [Line Items]
Redeemable convertible notes	$ 51	$ 57

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.

No definition available.

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