STATEMENT OF CHANGES IN EQUITY (USD $) In Millions, unless otherwise specified	Total	Common Stock [Member]	Additional Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Micron Shareholders' Equity [Member]	Noncontrolling Interests in Subsidiaries [Member]
Balance at Sep. 03, 2009	$ 6,939	$ 85	$ 7,257	$ (2,385)	$ (4)	$ 4,953	$ 1,986
Balance (in shares) at Sep. 03, 2009		848.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,900			1,850		1,850	50
Other comprehensive income (loss), net	14				15	15	(1)
Stock issued for business acquisition	1,112	14	1,098			1,112
Stock issued for business aquisition (in shares)		137.7
Stock-based compensation expense	93		93			93
Stock issued under stock plans	8		8			8
Stock issued under stock plans (in shares)		6.6
Distributions to noncontrolling interests, net	(229)					0	(229)
Repurchase and retirement of common stock	(21)		(20)	(1)		(21)
Repurchase and retirement of common stock (in shares)		(2.4)
Exercise of stock rights held by Intel (in shares)		3.9
Exercise of stock rights held by Intel	0					0
Acquisition of noncontrolling interests in TECH	0		10			10	(10)
Balance at Sep. 02, 2010	9,816	99	8,446	(536)	11	8,020	1,796
Balance (in shares) at Sep. 02, 2010		994.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	190			167		167	23
Other comprehensive income (loss), net	127				121	121	6
Issuance and repurchase of convertible debts	211		211			211
Stock-based compensation expense	76		76			76
Stock issued under stock plans	28	1	27			28
Stock issued under stock plans (in shares)		11.1
Distributions to noncontrolling interests, net	(217)					0	(217)
Repurchase and retirement of common stock	(163)	(2)	(160)	(1)		(163)
Repurchase and retirement of common stock (in shares)		(21.3)
Acquisition of noncontrolling interests	(159)		67			67	(226)
Purchase and settlement of capped calls	(57)		(57)			(57)
Balance at Sep. 01, 2011	9,852	98	8,610	(370)	132	8,470	1,382
Balance (in shares) at Sep. 01, 2011	984.3	984.3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,031)			(1,032)		(1,032)	1
Other comprehensive income (loss), net	(58)				(52)	(52)	(6)
Issuance and repurchase of convertible debts	191		191			191
Conversion of 2013 notes	138	3	135			138
Conversion of 2013 Notes (in shares)		27.3
Stock-based compensation expense	87		87			87
Stock issued under stock plans	6	1	5			6
Stock issued under stock plans (in shares)		7.1
Distributions to noncontrolling interests, net	(194)					0	(194)
Repurchase and retirement of common stock	(6)	0	(6)	0		(6)
Repurchase and retirement of common stock (in shares)		(1.0)
Acquisition of noncontrolling interests	(466)					0	(466)
Purchase and settlement of capped calls	(102)		(102)			(102)
Balance at Aug. 30, 2012	$ 8,417	$ 102	$ 8,920	$ (1,402)	$ 80	$ 7,700	$ 717
Balance (in shares) at Aug. 30, 2012	1,017.7	1,017.7