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Equity - Treasury Stock (Details) - USD ($) shares in Millions, $ in Millions |  | 12 Months Ended
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Dec. 06, 2016 | Aug. 31, 2017
Treasury Stock |  |
Class of Stock [Line Items] |  |
Decrease in retained earnings (decrease in treasury stock) 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 (decrease in treasury stock) 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 retained earnings (decrease in treasury stock) due to reissuance of treasury shares at price lower than purchase price | $ (1,030) |
Inotera | Shares Issued to Nanya | Retained Earnings |  |
Class of Stock [Line Items] |  |
Decrease in retained earnings (decrease in treasury stock) due to reissuance of treasury shares at price lower than purchase price | $ 104 |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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