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Acquisition of Inotera (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
12 Months Ended
Dec. 06, 2016
Aug. 30, 2018
Aug. 31, 2017
Sep. 01, 2016
Dec. 05, 2016
Acquisition of Inotera          
Gain on remeasurement of previously-held equity interest in Inotera   $ 0 $ 71 $ 0  
Consideration          
Payments attributed to intercompany balances with Inotera   0 361 0  
Assets acquired and liabilities assumed          
Goodwill   1,228 1,228    
Unaudited Pro Forma Financial Information          
Net sales     20,317 12,341  
Net Income (Loss)     5,172 (543)  
Net income (loss) attributable to Micron     $ 5,171 $ (544)  
Earnings (loss) per share, basic (in dollars per share)     $ 4.68 $ (0.50)  
Earnings (loss) per share, diluted (in dollars per share)     $ 4.42 $ (0.50)  
CNBU          
Assets acquired and liabilities assumed          
Goodwill   832 $ 832    
MBU          
Assets acquired and liabilities assumed          
Goodwill   198 198    
EBU          
Assets acquired and liabilities assumed          
Goodwill   $ 97 97    
Inotera | Nanya and certain of its affiliates          
Acquisition of Inotera          
Percentage interest in Inotera held by Nanya immediately prior to acquisition (in hundredths)         32.00%
Inotera          
Acquisition of Inotera          
Ownership interest in Inotera immediately prior to acquisition (in hundredths)         33.00%
Percentage of Inotera voting interests acquired (in hundredths) 67.00%        
Transaction costs incurred in connection with acquisition of Inotera     13 $ 3  
Micron Shares          
Proceeds from issuance of stock to Nanya $ 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        
Inotera | CNBU          
Assets acquired and liabilities assumed          
Goodwill 829        
Inotera | MBU          
Assets acquired and liabilities assumed          
Goodwill 198        
Inotera | EBU          
Assets acquired and liabilities assumed          
Goodwill $ 97        
Inotera | Level 3          
Acquisition of Inotera          
Gain on remeasurement of previously-held equity interest in Inotera     $ 71    
Inotera | Shares Issued to Nanya          
Micron Shares          
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        
Consideration          
Less cash received from selling Micron Shares (986)        
Inotera | Shares Issued to Nanya | Level 2          
Micron Shares          
Discount for lack of transferability on Micron Shares issued to Nanya $ 81