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	(90)	$ 0	(90)		0		(90)
Reclassification of redeemable convertible notes, net	3		3				3
Conversion and repurchase of convertible notes	(204)		(271)				(204)
Treasury stock reissued to settle conversion and repurchase of convertible notes					67
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
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	5,989
Other comprehensive income (loss), net	14
Balance (in shares) at Mar. 01, 2018		1,165
Balance at Mar. 01, 2018	26,566	$ 116	9,604	16,247	(313)	43	25,697	869
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]
Net income	3,311			3,309			3,309	2
Other comprehensive income (loss), net	19					19	19
Stock issued under stock plans (in shares)		8
Stock issued under stock plans	82	$ 0	82				82
Stock-based compensation expense	52		52				52
Repurchase and retirement of stock (in shares)		(1)
Repurchase and retirement of stock	(44)	$ 0	(44)		0		(44)
Settlement of capped calls	0		313		(313)		0
Reclassification of redeemable convertible notes, net	5		5				5
Conversion and repurchase of convertible notes	(252)		(252)				(252)
Balance (in shares) at Mar. 01, 2018		1,165
Balance at Mar. 01, 2018	$ 26,566	$ 116	9,604	16,247	(313)	43	25,697	869
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
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)
Accelerated share repurchase program			108
Repurchase of stock					(1,933)
Stock Repurchased (held and retired)	(1,836)						(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
Balance at Nov. 29, 2018	$ 34,739	$ 117	8,350	27,769	(2,362)	(5)	33,869	870
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	4,921
Other comprehensive income (loss), net	(4)
Conversion and repurchase of convertible notes	$ (372)
Balance (in shares) at Feb. 28, 2019	1,178	1,178
Balance at Feb. 28, 2019	$ 35,430	$ 118	8,143	29,364	(3,064)	6	34,567	863
Balance (in shares) at Nov. 29, 2018		1,172
Balance at Nov. 29, 2018	34,739	$ 117	8,350	27,769	(2,362)	(5)	33,869	870
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (excluding redeemable noncontrolling interest)	1,624			1,619			1,619	5
Net income	1,625
Other comprehensive income (loss), net	11					11	11
Stock issued under stock plans (in shares)		7
Stock issued under stock plans	77	$ 1	76				77
Stock-based compensation expense	57		57				57
Repurchase and retirement of stock (in shares)		(1)
Repurchase and retirement of stock		$ 0	(5)	(24)
Repurchase of stock					(702)
Stock Repurchased (held and retired)	(731)						(731)
Acquisitions of noncontrolling interest	(12)						0	(12)
Reclassification of redeemable convertible notes, net	1		1				1
Conversion and repurchase of convertible notes	$ (336)		(336)				(336)
Balance (in shares) at Feb. 28, 2019	1,178	1,178
Balance at Feb. 28, 2019	$ 35,430	$ 118	$ 8,143	$ 29,364	$ (3,064)	$ 6	$ 34,567	$ 863