Micron Memory Japan, Inc. (Details) (USD $)	3 Months Ended		9 Months Ended		6 Months Ended	9 Months Ended	0 Months Ended	3 Months Ended	12 Months Ended	0 Months Ended
	May 29, 2014	May 30, 2013	May 29, 2014	May 30, 2013	May 29, 2014 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]	Jul. 31, 2013 MMJ Acquisition [Member]	Feb. 27, 2014 MMJ Acquisition [Member]	Aug. 29, 2013 MMJ Acquisition [Member]	Jul. 31, 2013 MMJ Acquisition [Member] Rexchip Electronics Corporation, now known as Micron Memory Taiwan Co., Ltd. [Member]
Business Acquisition [Line Items]
Cash paid for the MMJ Acquisition							$ 949,000,000
Rexchip Share Purchase Agreement [Abstract]
Ownership percentage after stock transactions during period (in hundredths)						99.50%				89.00%
Minority interest decrease from purchase of interest, change in ownership percentage (in thousandths)					10.60%
Total net assets acquired							2,600,000,000
Noncontrolling interests in MMJ							168,000,000
Gain on acquisition of MMJ									1,480,000,000
Adjustment to gain on MMJ Acquisition	0	0	(33,000,000)	0				(33,000,000)
Business Acquisition, Pro Forma Information [Abstract]
Net sales		3,314,000,000		8,844,000,000
Net income		2,068,000,000		1,697,000,000
Net income attributable to Micron		$ 2,049,000,000		$ 1,655,000,000
Earnings per share: [Abstract]
Basic (in dollars per share)		$ 2.00		$ 1.63
Diluted (in dollars per share)		$ 1.96		$ 1.60