Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 01, 2011	Dec. 02, 2010	Sep. 01, 2011
Net income (loss)	$ (187)	$ 172
Other comprehensive income (loss), net of tax:
Net gain (loss) on foreign currency translation adjustment	(21)	18
Net gain (loss) on derivatives	(11)	6
Net unrealized gain (loss) on investments	2	3
Pension liability adjustment	0	1
Total other comprehensive income (loss)	(30)	28
Comprehensive income (loss)	(217)	200
Comprehensive loss (income) attributable to noncontrolling interests	(1)	(21)
Comprehensive income (loss) attributable to Micron	(218)	179
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive income (loss)	101		132
Parent [Member]
Net income (loss)	(187)	155
Other comprehensive income (loss), net of tax:
Total other comprehensive income (loss)	(31)	24
Comprehensive income (loss)	(218)	179
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated translation adjustment, net	44		65
Gain (loss) on derivatives, net	31		43
Gain (loss) on investments, net	27		25
Unrecognized pension liability	(1)		(1)
Accumulated other comprehensive income (loss)	$ 101		$ 132