Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	May 30, 2013	May 31, 2012	May 30, 2013	May 31, 2012
Earnings Per Share Reconciliation [Abstract]
Net income (loss) available to Micron shareholders - basic and diluted	$ 43	$ (320)	$ (518)	$ (789)
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - basic (in shares)	1,024.0	987.3	1,017.9	983.9
Net effect of dilutive equity awards and convertible notes (in shares)	22.6	0	0	0
Weighted-average common shares outstanding - diluted (in shares)	1,046.6	987.3	1,017.9	983.9
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.04	$ (0.32)	$ (0.51)	$ (0.80)
Diluted (in dollars per share)	$ 0.04	$ (0.32)	$ (0.51)	$ (0.80)