Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Feb. 28, 2019	Mar. 01, 2018	Feb. 28, 2019	Mar. 01, 2018
Earnings Per Share Reconciliation [Abstract]
Net income attributable to Micron - Basic	$ 1,619	$ 3,309	$ 4,912	$ 5,987
Assumed conversion of debt	(2)	0	(2)	0
Net income attributable to Micron – Diluted	$ 1,617	$ 3,309	$ 4,910	$ 5,987
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - Basic (in shares)	1,114	1,156	1,123	1,145
Dilutive effect of equity plans and convertible notes (in shares)	27	82	34	87
Weighted-average common shares outstanding - Diluted (in shares)	1,141	1,238	1,157	1,232
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)	$ 1.45	$ 2.86	$ 4.37	$ 5.23
Diluted (in dollars per share)	$ 1.42	$ 2.67	$ 4.24	$ 4.86
Antidilutive potential common shares that could dilute basic earnings per share in the future (in shares)	11	3	9	3