Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 05, 2015	Feb. 27, 2014	Mar. 05, 2015	Feb. 27, 2014
Earnings Per Share Reconciliation [Abstract]
Net income available to Micron shareholders – Basic	$ 934	$ 731	$ 1,937	$ 1,089
Dilutive effect related to equity method investment	(2)	0	(3)	0
Net income available to Micron shareholders – Diluted	$ 932	$ 731	$ 1,934	$ 1,089
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - Basic (in shares)	1,074	1,060	1,072	1,053
Dilutive effect of equity plans and convertible notes (in shares)	116	141	121	146
Weighted-average common shares outstanding - Diluted (in shares)	1,190	1,201	1,193	1,199
Earnings Per Share, Basic [Abstract]
Basic (in dollars per share)	$ 0.87	$ 0.69	$ 1.81	$ 1.03
Earnings Per Share, Diluted [Abstract]
Diluted (in dollars per share)	$ 0.78	$ 0.61	$ 1.62	$ 0.91