Equity - MMT Share Purchase (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended				6 Months Ended		6 Months Ended
	May 29, 2014	May 30, 2013	May 29, 2014 Noncontrolling Interests [Member]	May 30, 2013 Noncontrolling Interests [Member]	May 29, 2014 Rexchip Electronics Corporation, now known as Micron Memory Taiwan Co., Ltd. [Member]	Aug. 29, 2013 Rexchip Electronics Corporation, now known as Micron Memory Taiwan Co., Ltd. [Member]	May 29, 2014 Rexchip Electronics Corporation, now known as Micron Memory Taiwan Co., Ltd. [Member] Noncontrolling Interests [Member]	May 29, 2014 Rexchip Electronics Corporation, now known as Micron Memory Taiwan Co., Ltd. [Member] Additional Capital [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Variable interest entity, ownership percentage by noncontrolling owners (in hundredths)						11.00%
Acquisition of noncontrolling interest in MMT	$ (146)	$ 0	$ (180)	$ 0	$ (146)		$ (180)	$ 34