STATEMENT OF CHANGES IN EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Total Micron Shareholders' Equity	Noncontrolling Interests in Subsidiaries
Balance (in shares) at Aug. 31, 2017		1,116
Balance at Aug. 31, 2017	$ 19,470	$ 112	$ 8,287	$ 10,260	$ (67)	$ 29	$ 18,621	$ 849
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,678			2,678			2,678	0
Other comprehensive income (loss), net	(5)					(5)	(5)
Contributions from noncontrolling interests	18							18
Stock issued in public offering (in shares)		34
Stock issued in public offering	1,366	$ 3	1,363				1,366
Stock issued under stock plans (in shares)		9
Stock issued under stock plans	106	$ 1	105				106
Stock-based compensation expense	51		51				51
Repurchase and retirement of stock (in shares)		(1)
Repurchase and retirement of stock		$ 0
Repurchase of stock	(23)		(90)		67		(23)
Reclassification of redeemable convertible notes, net	3		3				3
Conversion and repurchase of convertible notes	(271)		(271)				(271)
Balance (in shares) at Nov. 30, 2017		1,158
Balance at Nov. 30, 2017	23,393	$ 116	9,448	12,938	0	24	22,526	867
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of adopting new accounting standards	$ 92			92			92
Balance (in shares) at Aug. 30, 2018	1,170	1,170
Balance at Aug. 30, 2018	$ 33,164	$ 117	8,201	24,395	(429)	10	32,294	870
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (excluding redeemable noncontrolling interest)	3,293			3,293			3,293	0
Net income	3,296
Other comprehensive income (loss), net	(15)					(15)	(15)
Stock issued under stock plans (in shares)		3
Stock issued under stock plans	15	$ 0	15				15
Stock-based compensation expense	61		61				61
Repurchase and retirement of stock (in shares)		(1)
Repurchase and retirement of stock		$ 0		(11)
Repurchase of stock	(1,836)		108		(1,933)		(1,836)
Reclassification of redeemable convertible notes, net	1		1				1
Conversion and repurchase of convertible notes	$ (36)		(36)				(36)
Balance (in shares) at Nov. 29, 2018	1,172	1,172
Balance at Nov. 29, 2018	$ 34,739	$ 117	$ 8,350	$ 27,769	$ (2,362)	$ (5)	$ 33,869	$ 870