Recently Adopted Accounting Standards Revenue Initial Application Period Cumulative Effect (Details) - USD ($) $ in Millions	3 Months Ended
	Nov. 29, 2018	Nov. 30, 2017	Aug. 31, 2018	Aug. 30, 2018
Income Statement [Abstract]
Revenue	$ 7,913	$ 6,803
Cost of goods sold	3,298	3,056
Interest expense	(33)	(124)
Income tax provision	(477)	(114)
Net income attributable to Micron	3,293	$ 2,678
Balance Sheet [Abstract]
Receivables	5,418		$ 5,592	$ 5,478
Other current assets	182		180	164
Deferred tax assets	842		986	1,022
Accounts payable and accrued expenses	4,200			4,374
Other current liabilities	591		517	521
Other noncurrent liabilities	834		582	581
Retained earnings	27,769		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	95
Cost of goods sold	41
Interest expense	(2)
Income tax provision	(3)
Net income attributable to Micron	49
Balance Sheet [Abstract]
Receivables	161
Other current assets	41
Deferred tax assets	(92)
Accounts payable and accrued expenses	2
Other current liabilities	8
Other noncurrent liabilities	1
Retained earnings	99
Calculated under Revenue Guidance in Effect before Topic 606 | ASC 606
Income Statement [Abstract]
Revenue	7,818
Cost of goods sold	3,257
Interest expense	(31)
Income tax provision	(474)
Net income attributable to Micron	3,244
Balance Sheet [Abstract]
Receivables	5,257
Other current assets	141
Deferred tax assets	934
Accounts payable and accrued expenses	4,198
Other current liabilities	583
Other noncurrent liabilities	833
Retained earnings	$ 27,670