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Recently Adopted Accounting Standards Revenue Initial Application Period Cumulative Effect (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Aug. 29, 2019
May 30, 2019
Feb. 28, 2019
Nov. 29, 2018
Aug. 30, 2018
May 31, 2018
Mar. 01, 2018
Nov. 30, 2017
Aug. 29, 2019
Aug. 30, 2018
Aug. 31, 2017
Aug. 31, 2018
Income Statement [Abstract]                        
Revenue $ 4,870 $ 4,788 $ 5,835 $ 7,913 $ 8,440 $ 7,797 $ 7,351 $ 6,803 $ 23,406 $ 30,391 $ 20,322  
Cost of goods sold                 12,704 12,500 11,886  
Interest expense                 (128) (342) (601)  
Income tax (provision) benefit                 (693) (168) (114)  
Net income attributable to Micron 561 $ 840 $ 1,619 $ 3,293 4,325 $ 3,823 $ 3,309 $ 2,678 6,313 14,135 $ 5,089  
Balance Sheet [Abstract]                        
Receivables 3,195       5,478       3,195 5,478   $ 5,592
Other current assets 235       164       235 164   180
Deferred tax assets 837       1,022       837 1,022   986
Accounts payable and accrued expenses 4,626       4,374       4,626 4,374    
Other current liabilities 454       521       454 521   517
Other noncurrent liabilities 452       354       452 354   355
Retained earnings 30,761       $ 24,395       30,761 $ 24,395   24,487
ASC 606                        
Balance Sheet [Abstract]                        
Receivables                       114
Other current assets                       30
Deferred tax assets                       (92)
Other current liabilities                       (4)
Other noncurrent liabilities                       1
Retained earnings                       $ 50
Difference between Revenue Guidance in Effect before and after Topic 606 | ASC 606                        
Income Statement [Abstract]                        
Revenue                 40      
Cost of goods sold                 70      
Interest expense                 (5)      
Income tax (provision) benefit                 19      
Net income attributable to Micron                 (16)      
Balance Sheet [Abstract]                        
Receivables 94               94      
Other current assets 44               44      
Deferred tax assets (79)               (79)      
Accounts payable and accrued expenses (6)               (6)      
Other current liabilities 30               30      
Other noncurrent liabilities 1               1      
Retained earnings 34               34      
Calculated under Revenue Guidance in Effect before Topic 606 | ASC 606                        
Income Statement [Abstract]                        
Revenue                 23,366      
Cost of goods sold                 12,634      
Interest expense                 (123)      
Income tax (provision) benefit                 (712)      
Net income attributable to Micron                 6,329      
Balance Sheet [Abstract]                        
Receivables 3,101               3,101      
Other current assets 191               191      
Deferred tax assets 916               916      
Accounts payable and accrued expenses 4,632               4,632      
Other current liabilities 424               424      
Other noncurrent liabilities 451               451      
Retained earnings $ 30,727               $ 30,727