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Equity - Treasury Stock (Details) - USD ($) shares in Millions, $ in Millions		12 Months Ended
	Dec. 06, 2016	Aug. 31, 2017
Treasury Stock
Class of Stock [Line Items]
Decrease in retained earnings due to reissuance of treasury shares at price lower than purchase price		$ (1,029)
Retained Earnings
Class of Stock [Line Items]
Decrease in retained earnings due to reissuance of treasury shares at price lower than purchase price		$ 104
Inotera
Class of Stock [Line Items]
Proceeds from issuance of stock to Nanya	$ 986
Inotera | Shares Issued to Nanya
Class of Stock [Line Items]
Number of Micron Shares issued to Nanya as consideration for Inotera shares not already owned (in shares)	58
Proceeds from issuance of stock to Nanya	$ 986
Inotera | Shares Issued to Nanya | Treasury Stock
Class of Stock [Line Items]
Proceeds from issuance of stock to Nanya	$ 925
Treasury shares included in sale of shares to Nanya (in shares)	54
Decrease in treasury stock due to reissuance of treasury shares	$ 1,030
Inotera | Shares Issued to Nanya | Retained Earnings
Class of Stock [Line Items]
Decrease in retained earnings due to reissuance of treasury shares at price lower than purchase price	$ 104

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Number of shares of equity interests issued or issuable to acquire entity.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

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Equity impact of the value of treasury stock (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

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