Numonyx Holdings B.V. - 2 (Details) (Numonyx Holdings BV [Member], USD $) In Millions, except Per Share data	3 Months Ended		12 Months Ended
	Jun. 03, 2010	Sep. 02, 2010	Sep. 02, 2010	Sep. 03, 2009	May 07, 2010
Business Acquisition [Line Items]
Date of acquisition	5/7/2010
Name of acquired entity	Numonyx Holdings B.V.
Recognized amounts of identifiable assets acquired and liabilities assumed: [Abstract]
Fair value of the consideration paid for Numonyx					$ 1,112
Gain on acquisition of Numonyx					(437)
Income tax benefit recognized in connection with the acquisition of Numonyx					51
Cash and equivalents					95
Receivables					256
Inventories					689
Other current assets					28
Intangible assets					29
Property, plant and equipment					344
Equity method investment					414
Other noncurrent assets					307
Accounts payable and accrued expenses					(310)
Other current liabilities					(5)
Other noncurrent liabilities					(298)
Total net assets acquired					1,549
Business Combination, Pro Forma Information [Abstract]
Numonyx net sales after acquisition date		635
Numonyx operating loss after acquisition date		(14)
Business Acquisition, Pro Forma Information [Abstract]
Net sales			9,895	6,464
Net income (loss)			1,923	(2,230)
Net income (loss) attributable to Micron			1,873	(2,119)
Earnings (loss) per share: [Abstract]
Basic (in dollars per share)			$ 1.90	$ (2.31)
Diluted (in dollars per share)			$ 1.72	$ (2.31)
Common Stock [Member]
Recognized amounts of identifiable assets acquired and liabilities assumed: [Abstract]
Fair value of the consideration paid for Numonyx					1,091
Restricted Stock [Member]
Recognized amounts of identifiable assets acquired and liabilities assumed: [Abstract]
Fair value of the consideration paid for Numonyx					$ 21