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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