Recently Adopted Accounting Standards Revenue Initial Application Period Cumulative Effect (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May 30, 2019	May 31, 2018	May 30, 2019	May 31, 2018	Aug. 31, 2018	Aug. 30, 2018
Income Statement [Abstract]
Revenue	$ 4,788	$ 7,797	$ 18,536	$ 21,951
Cost of goods sold	2,960	3,074	9,229	9,211
Interest expense	(29)	(80)	(89)	(292)
Income tax (provision) benefit	135	109	(622)	(148)
Net income attributable to Micron	840	$ 3,823	5,752	$ 9,810
Balance Sheet [Abstract]
Receivables	3,257		3,257		$ 5,592	$ 5,478
Other current assets	215		215		180	164
Deferred tax assets	817		817		986	1,022
Accounts payable and accrued expenses	3,494		3,494			4,374
Other current liabilities	557		557		517	521
Other noncurrent liabilities	417		417		355	354
Retained earnings	30,201		30,201		24,487	$ 24,395
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	(43)		72
Cost of goods sold	(4)		65
Interest expense	(2)		(5)
Income tax (provision) benefit	8		13
Net income attributable to Micron	(33)		15
Balance Sheet [Abstract]
Receivables	112		112
Other current assets	41		41
Deferred tax assets	(82)		(82)
Accounts payable and accrued expenses	(3)		(3)
Other current liabilities	8		8
Other noncurrent liabilities	1		1
Retained earnings	65		65
Calculated under Revenue Guidance in Effect before Topic 606 | ASC 606
Income Statement [Abstract]
Revenue	4,831		18,464
Cost of goods sold	2,964		9,164
Interest expense	(27)		(84)
Income tax (provision) benefit	127		(635)
Net income attributable to Micron	873		5,737
Balance Sheet [Abstract]
Receivables	3,145		3,145
Other current assets	174		174
Deferred tax assets	899		899
Accounts payable and accrued expenses	3,497		3,497
Other current liabilities	549		549
Other noncurrent liabilities	416		416
Retained earnings	$ 30,136		$ 30,136