Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	9 Months Ended
May 30, 2019	May 31, 2018	May 30, 2019	May 31, 2018
Earnings Per Share Reconciliation [Abstract]
Net income attributable to Micron - Basic	$ 840	$ 3,823	$ 5,752	$ 9,810
Assumed conversion of debt	(4)	0	(6)	0
Net income attributable to Micron – Diluted	$ 836	$ 3,823	$ 5,746	$ 9,810
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Weighted-average common shares outstanding - Basic (in shares)	1,105	1,159	1,117	1,150
Dilutive effect of equity plans and convertible notes (in shares)	24	76	31	83
Weighted-average common shares outstanding - Diluted (in shares)	1,129	1,235	1,148	1,233
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)	$ 0.76	$ 3.30	$ 5.15	$ 8.53
Diluted (in dollars per share)	$ 0.74	$ 3.10	$ 5.01	$ 7.96
Antidilutive potential common shares that could dilute basic earnings per share in the future (in shares)	6	2	7	3

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise of dilutive convertible securities excluding adjustments related to ESOP convertible preferred stock, stock options, and restrictive stock units.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent, and includes adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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