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Segment Information (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Dec. 04, 2014
Nov. 28, 2013
Segment Reporting Information [Line Items]    
Net sales $ 4,573us-gaap_SalesRevenueNet $ 4,042us-gaap_SalesRevenueNet
Operating income (loss) 1,085us-gaap_OperatingIncomeLoss 551us-gaap_OperatingIncomeLoss
Operating Segments [Member] | CNBU [Member]    
Segment Reporting Information [Line Items]    
Net sales 2,088us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_CNBUMember
1,744us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_CNBUMember
Operating income (loss) 623us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_CNBUMember
427us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_CNBUMember
Operating Segments [Member] | SBU [Member]    
Segment Reporting Information [Line Items]    
Net sales 984us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_SBUMember
805us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_SBUMember
Operating income (loss) 26us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_SBUMember
94us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_SBUMember
Operating Segments [Member] | MBU [Member]    
Segment Reporting Information [Line Items]    
Net sales 940us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_MBUMember
1,052us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_MBUMember
Operating income (loss) 306us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_MBUMember
166us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_MBUMember
Operating Segments [Member] | EBU [Member]    
Segment Reporting Information [Line Items]    
Net sales 539us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_EBUMember
409us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_EBUMember
Operating income (loss) 118us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_EBUMember
78us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= mu_EBUMember
Operating Segments [Member] | All Other [Member]    
Segment Reporting Information [Line Items]    
Net sales 22us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
32us-gaap_SalesRevenueNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
Operating income (loss) 12us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
19us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
Unallocated [Member]    
Segment Reporting Information [Line Items]    
Operating income (loss) $ 0us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
$ (233)us-gaap_OperatingIncomeLoss
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember