XML 135 R121.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Events Subsequent to Original Issuance of Financial Statements (Unaudited) (Details) $ / shares in Units, shares in Millions, $ in Millions, TWD in Billions |  |  |  |  |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 11, 2017 USD ($) | Jun. 05, 2017 USD ($) | Apr. 11, 2017 USD ($) | Mar. 06, 2017 USD ($) | Dec. 06, 2016 USD ($) shares | Dec. 06, 2016 TWD shares | Dec. 02, 2016 USD ($) | Aug. 31, 2017 USD ($) | Jun. 01, 2017 USD ($) payment | Mar. 02, 2017 USD ($) | Mar. 02, 2017 USD ($) | Jun. 01, 2017 USD ($) payment | Aug. 31, 2017 USD ($) $ / shares | Sep. 01, 2016 USD ($) $ / shares | Sep. 03, 2015 USD ($) | Aug. 28, 2014 USD ($) | Jun. 01, 2017 TWD payment | Dec. 05, 2016
Unaudited Pro Forma Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,341 |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  | (543) |  |  |  |
Net income (loss) attributable to Micron |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (544) |  |  |  |
Basic | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (0.50) |  |  |  |
Diluted | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (0.50) |  |  |  |
Extinguishment of Debt Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in carrying amount of debt repurchased |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,178 | $ 1,409 |  |
Repayments of repurchased debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 870 | 2,329 | 3,843 |  |
Loss on restructure of debt |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (4) | $ (49) | $ (195) |  |
Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest held by Nanya prior to Inotera Acquisition (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  | 67.00% |  |  |  |
Nanya | Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest held by Nanya prior to Inotera Acquisition (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  | 32.00% |  |  |  |
Inotera | Selling, general, and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3 |  |  |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unaudited Pro Forma Information |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,317 |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  |  |  |  |  | 5,172 |  |  |  |  |
Net income (loss) attributable to Micron |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,171 |  |  |  |  |
Basic | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 4.68 |  |  |  |  |
Diluted | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 4.42 |  |  |  |  |
Subsequent Event | Corporate bonds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of Debt Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of repurchased debt |  |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on restructure of debt |  |  |  |  |  |  |  |  | $ (60) |  |  |  |  |  |  |  |  |
Subsequent Event | Corporate bonds | 2025 senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of Debt Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principle amount of debt repurchased |  |  | 631 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in carrying amount of debt repurchased |  |  | (625) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Corporate bonds | 2026 senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of Debt Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principle amount of debt repurchased |  |  | 321 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in carrying amount of debt repurchased |  |  | $ (318) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Corporate bonds | 2022 senior notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Extinguishment of Debt Disclosures [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principle amount of debt repurchased | $ 600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease in carrying amount of debt repurchased | (592) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of repurchased debt | $ 630 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on restructure of debt |  |  |  |  |  |  |  | $ (34) |  |  |  |  |  |  |  |  |  |
Subsequent Event | Secured Debt | 2021 MSAC senior secured term loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, original term |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | $ 800 |  |  | $ 800 |  |  |  |  |  |
Draw on facility agreement |  | $ 175 |  | $ 175 |  |  | $ 450 |  |  |  |  |  |  |  |  |  |  |
Debt instruments number of periodic payments | payment |  |  |  |  |  |  |  |  | 16 |  |  | 16 |  |  |  |  | 16 |
Subsequent Event | Secured Debt | 2021 MSAC senior secured term loan | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, covenant, ratio of debt to fair value of equipment |  |  |  |  |  |  |  |  | 0.8 |  |  | 0.8 |  |  |  |  | 0.8 |
Subsequent Event | Secured Debt | 2021 MSAC senior secured term loan | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Variable Reference Rate Period 1 |  |  |  |  |  |  |  |  |  |  |  | 3 months |  |  |  |  |  |
Margin on variable rate financing |  |  |  |  |  |  |  |  |  |  |  | 2.40% |  |  |  |  |  |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant Compliance, Penalty Interest Percent |  |  |  |  |  |  |  |  | 0.25% |  |  | 0.25% |  |  |  |  | 0.25% |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Maximum | Debt Covenant Period 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Ratio Of Total Debt To EBITDA |  |  |  |  |  |  |  |  | 3.5 |  |  | 3.5 |  |  |  |  | 3.5 |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Maximum | Debt Covenant Period 2018_2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Ratio Of Total Debt To EBITDA |  |  |  |  |  |  |  |  | 3.0 |  |  | 3.0 |  |  |  |  | 3.0 |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Maximum | Debt Covenant Period 2020_2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Ratio Of Total Debt To EBITDA |  |  |  |  |  |  |  |  | 2.5 |  |  | 2.5 |  |  |  |  | 2.5 |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Maximum | MSTW | Debt Covenant Period 2017_2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Ratio Of Total Debt To EBITDA |  |  |  |  |  |  |  |  | 5.5 |  |  | 5.5 |  |  |  |  | 5.5 |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Maximum | MSTW | Debt Covenant Period 2019_2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Ratio Of Total Debt To EBITDA |  |  |  |  |  |  |  |  | 4.5 |  |  | 4.5 |  |  |  |  | 4.5 |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Minimum | Debt Covenant Period 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Tangible Net Worth |  |  |  |  |  |  |  |  | $ 9,000 |  |  | $ 9,000 |  |  |  |  |  |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Minimum | Debt Covenant Period 2018_2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Tangible Net Worth |  |  |  |  |  |  |  |  | 12,500 |  |  | 12,500 |  |  |  |  |  |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Minimum | Debt Covenant Period 2020_2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Tangible Net Worth |  |  |  |  |  |  |  |  | $ 16,500 |  |  | $ 16,500 |  |  |  |  |  |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Minimum | MSTW | Debt Covenant Period 2017_2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Tangible Net Worth | TWD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | TWD 4.0 |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Minimum | MSTW | Debt Covenant Period 2019_2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Tangible Net Worth | TWD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.5 |
Subsequent Event | Secured Debt | 2022 Secured Notes NTD Term Loan | Minimum | MSTW | Debt Covenant Period 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Tangible Net Worth | TWD |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | TWD 12.0 |
Subsequent Event | Nanya | Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage interest held by Nanya prior to Inotera Acquisition (in hundredths) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32.00%
Subsequent Event | Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity interest in Inotera immediately prior to acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33.00%
Percentage of Inotera voting interest acquired |  |  |  |  | 67.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Micron Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash received from selling Micron Shares |  |  |  |  | $ 986 |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for Inotera Acquisition |  |  |  |  | 4,099 |  |  |  |  |  |  |  |  |  |  |  |  |
Less cash received from selling Micron Shares |  |  |  |  | (986) |  |  |  |  |  |  |  |  |  |  |  |  |
Net cash paid for Inotera Acquisition |  |  |  |  | 3,113 |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of our previously-held equity interest in Inotera |  |  |  |  | 1,441 |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of Micron Shares exchanged for Inotera shares |  |  |  |  | 995 |  |  |  |  |  |  |  |  |  |  |  |  |
Other |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |
Payments attributed to intercompany balances with Inotera |  |  |  |  | (361) |  |  |  |  |  |  |  |  |  |  |  |  |
Total fair value of consideration for Inotera including previously held equity interests |  |  |  |  | 5,191 |  |  |  |  |  |  |  |  |  |  |  |  |
Assets acquired and liabilities assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and equivalents |  |  |  |  | 118 |  |  |  |  |  |  |  |  |  |  |  |  |
Inventories |  |  |  |  | 285 |  |  |  |  |  |  |  |  |  |  |  |  |
Other current assets |  |  |  |  | 27 |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant, and equipment |  |  |  |  | 3,722 |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred tax assets |  |  |  |  | 82 |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 1,124 |  |  |  |  |  |  |  |  |  |  |  |  |
Other noncurrent assets |  |  |  |  | 130 |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts payable and accrued expenses |  |  |  |  | (232) |  |  |  |  |  |  |  |  |  |  |  |  |
Debt |  |  |  |  | (56) |  |  |  |  |  |  |  |  |  |  |  |  |
Other noncurrent liabilities |  |  |  |  | (9) |  |  |  |  |  |  |  |  |  |  |  |  |
Total assets acquired and liabilities assumed, including goodwill |  |  |  |  | 5,191 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Inotera | Secured Debt | 2022 Secured Notes NTD Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, original term |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Debt instruments number of periodic payments | payment |  |  |  |  |  |  |  |  | 6 |  |  | 6 |  |  |  |  | 6 |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 Term loan draw | TWD |  |  |  |  |  | TWD 80.0 |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Inotera | Secured Debt | 2022 Secured Notes NTD Term Loan | Inotera Stock | MSTW |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 MSTW Senior Secured Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of post-acquisition MTTW shares subject to collateralization |  |  |  |  |  |  |  |  |  |  |  | 82.00% |  |  |  |  |  |
Subsequent Event | Inotera | Secured Debt | 2022 Secured Notes NTD Term Loan | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Variable Reference Rate Period 1 |  |  |  |  |  |  |  |  |  |  |  | 6 months |  |  |  |  |  |
Subsequent Event | Inotera | Secured Debt | 2022 Secured Notes NTD Term Loan | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Variable Reference Rate Period 1 |  |  |  |  |  |  |  |  |  |  |  | 3 months |  |  |  |  |  |
Subsequent Event | Inotera | Secured Debt | 2022 Secured Notes NTD Term Loan | TAIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Margin on variable rate financing |  |  |  |  |  |  |  |  |  |  |  | 2.05% |  |  |  |  |  |
Subsequent Event | Inotera | CNBU |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets acquired and liabilities assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 829 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Inotera | MBU |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets acquired and liabilities assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 198 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Inotera | EBU |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets acquired and liabilities assumed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 97 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Inotera | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Micron Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Micron Shares issued to Nanya as consideration for Inotera shares not already owned (in shares) | shares |  |  |  |  | 58 | 58 |  |  |  |  |  |  |  |  |  |  |  |
Cash received from selling Micron Shares |  |  |  |  | $ 986 |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Less cash received from selling Micron Shares |  |  |  |  | (986) |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Inotera | Level 2 | Private Placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Micron Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Discount for lack of transferability on Micron Shares issued to Nanya |  |  |  |  | $ 81 |  |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event | Inotera | Selling, general, and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  | $ 13 |  |  |  |  |  |  |
Subsequent Event | Inotera | Other non-operating income expense net | Level 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of Inotera |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on difference between fair value and carrying value of pre-acquisition equity interests in Inotera |  |  |  |  |  |  |  |  |  | $ 71 |  |  |  |  |  |  |  |

X
- Definition The pro forma net income or loss for the period net of tax including portion attributable to noncontrolling interest as if the business combination or combinations had been completed at the beginning of a period. + References No definition available. + Details
Name: | mu_BusinessAcquisitionProFormaNetIncomeLossIncludingPortionAttributabletoNoncontrollingInterest
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of net receivables (payables) between the acquirer and the acquiree that are settled and treated as consideration (or a reduction thereof) for purchase accounting. + References No definition available. + Details
Name: | mu_BusinessCombinationConsiderationTransferredSettlementOfReceivablesPayablesWithAcquireeNet
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. Also includes taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations. + References No definition available. + Details
Name: | mu_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesAccountsPayableandAccruedLiabilities
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition In the event of non-compliance with debt covenants, the interest percentage that will be charged in addition to the stated or variable rate. + References No definition available. + Details
Name: | mu_DebtInstrumentCovenantCompliancePenaltyInterestPercent
Namespace Prefix: | mu_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ratio of total debt divided by earnings before interest, taxes, depreciation, and amortization (EBITDA) required to comply with debt covenants. + References No definition available. + Details
Name: | mu_DebtInstrumentCovenantRatioOfTotalDebtToEBITDA
Namespace Prefix: | mu_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Net worth of an entity excluding value derived from intangible assets including, but not limited to, intellectual property and goodwill. Threshold of total tangible assets less total liabilities required to comply with debt covenants. + References No definition available. + Details
Name: | mu_DebtInstrumentCovenantTangibleNetWorth
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The reference rate period of focus for variable rate loans based on InterBank Offering Rates. + References No definition available. + Details
Name: | mu_DebtInstrumentVariableReferenceRatePeriod1
Namespace Prefix: | mu_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ratio of the outstanding debt divided by the fair value of the equipment collateralizing the loan. + References No definition available. + Details
Name: | mu_DebtInstrumentcovenantratioofdebttofairvalueofEquipment
Namespace Prefix: | mu_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition debt instruments number of periodic payments + References No definition available. + Details
Name: | mu_DebtInstrumentsNumberOfPeriodicPayments
Namespace Prefix: | mu_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Ownership percentage held by a third party in an entity in which registrant also owns an equity interest. + References No definition available. + Details
Name: | mu_EquityMethodInvestmentOwnershipPercentageHeldByThirdParty
Namespace Prefix: | mu_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The adjustment to the issuance date trading price fair value of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination related to a discount for lack of marketability. The adjustment to fair value for lack of ability to convert business interests into cash quickly. + References No definition available. + Details
Name: | mu_FairValueInputsDiscountforLackofMarketabilityValue
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total payments made to acquire an entity net of proceeds received from acquisition-related sale of stock. + References No definition available. + Details
Name: | mu_PaymentstoAcquireBusinessesNetofProceedsfromSaleofStock
Namespace Prefix: | mu_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionProFormaInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460 + Details
Name: | us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombinationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredOther1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationDescriptionAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of inventory recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=73531372&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination. + References No definition available. + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net increase or decrease in the carrying amount of the debt instrument for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_DebtInstrumentIncreaseDecreaseForPeriodNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
Name: | us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPrivatePlacement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
Name: | us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SecuredLongtermDebtCurrentAndNoncurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions. + References No definition available. + Details
Name: | us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=mu_InoteraMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mu_EntityWhichWePartnerWithInInvestmentAxis=mu_NanyaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=mu_InoteraMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mu_Unsecuredseniorcorporatedebtdue2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mu_UnsecuredSeniorCorporateDebtDue2026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mu_Unsecuredseniorcorporatedebtdue2022Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mu_SecuredDebt7Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mu_SecuredNotesNTDTermLoanDue2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mu_ApplicationPeriodAxis=mu_DebtCovenantPeriod2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mu_ApplicationPeriodAxis=mu_DebtCovenantPeriod2018_2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mu_ApplicationPeriodAxis=mu_DebtCovenantPeriod2020_2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=mu_MicronSemiconductorTaiwanCo.Ltd.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mu_ApplicationPeriodAxis=mu_DebtCovenantPeriod2017_2018Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mu_ApplicationPeriodAxis=mu_DebtCovenantPeriod2019_2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mu_ApplicationPeriodAxis=mu_DebtCovenantPeriod2019_2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mu_ApplicationPeriodAxis=mu_DebtCovenantPeriod2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=mu_TaipeiInterbankOfferedRateTAIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mu_CNBUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mu_MBUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mu_EBUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNonoperatingIncomeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |