STATEMENT OF CHANGES IN EQUITY (USD $) In Millions	Total	Common Stock [Member]	Common Stock [Member] Numonyx Holdings B V [Member]	Additional Capital [Member]	Additional Capital [Member] Numonyx Holdings B V [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Micron Shareholders' Equity [Member]	Total Micron Shareholders' Equity [Member] Numonyx Holdings B V [Member]	Noncontrolling Interests in Subsidiaries [Member]
Balance at Aug. 28, 2008	$ 9,390	$ 76		$ 6,960		$ (503)	$ (8)	$ 6,525		$ 2,865
Balance (in shares) at Aug. 28, 2008		761.1
Comprehensive income (loss)
Net income (loss)	(1,993)					(1,882)		(1,882)		(111)
Other comprehensive income (loss)
Net gain (loss) on foreign currency translation adjustment, net of tax	(9)						(9)	(9)
Net unrealized gain (loss) on investments, net of tax	12						12	12
Pension liability adjustment, net of tax	1						1	1
Total comprehensive income (loss)	(1,989)							(1,878)		(111)
Issuance of common stock	276	7		269				276
Issuance of common stock (in shares)		69.3
Stock issued for business acquisition	12			12				12
Stock issued for business aquisition (in shares)		1.8
Stock-based compensation expense	44			44				44
Stock issued under stock plans	1	1						1
Stock issued under stock plans (in shares)		4.0
Distributions to noncontrolling interests, net	(681)							0		(681)
Exercise of stock rights held by Intel	0	1		(1)				0
Exercise of stock rights held by Intel (in shares)		13.0
Acquisition of noncontrolling interests in TECH	(87)							0		(87)
Purchase of capped calls	(25)			(25)				(25)
Repurchase and retirement of common stock	(2)			(2)				(2)
Repurchase and retirement of common stock (in shares)		(0.5)
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
Comprehensive income (loss)
Net income (loss)	1,900					1,850		1,850		50
Other comprehensive income (loss)
Net gain (loss) on foreign currency translation adjustment, net of tax	11						11	11
Net gain (loss) on derivatives, net of tax	0						1	1		(1)
Net unrealized gain (loss) on investments, net of tax	5						5	5
Pension liability adjustment, net of tax	(2)						(2)	(2)
Total comprehensive income (loss)	1,914							1,865		49
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)
Exercise of stock rights held by Intel	0							0
Exercise of stock rights held by Intel (in shares)		3.9
Acquisition of noncontrolling interests in TECH	0			10				10		(10)
Repurchase and retirement of common stock	(21)			(20)		(1)		(21)
Repurchase and retirement of common stock (in shares)		(2.4)
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	994.5
Comprehensive income (loss)
Net income (loss)	190					167		167		23
Other comprehensive income (loss)
Net gain (loss) on foreign currency translation adjustment, net of tax	63						63	63
Net gain (loss) on derivatives, net of tax	48						42	42		6
Net unrealized gain (loss) on investments, net of tax	11						11	11
Pension liability adjustment, net of tax	5						5	5
Total comprehensive income (loss)	317							288		29
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)
Acquisition of noncontrolling interests in TECH	(159)			67				67		(226)
Purchase of capped calls	(57)			(57)				(57)
Repurchase and retirement of common stock	(163)	(2)		(160)		(1)		(163)
Repurchase and retirement of common stock (in shares)		(21.3)
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