Equity Plans (Tables)

12 Months Ended

Aug. 29, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Restricted Stock Awards Activity

	Number of Shares		Weighted-Average Grant Date Fair Value Per Share
Outstanding as of August 30, 2018	15		$	25.18
Granted	9		41.11
Restrictions lapsed	(6	)	24.22
Canceled	(2	)	24.79
Outstanding as of August 29, 2019	16		34.72

For the year ended	2019		2018		2017
Restricted stock award shares granted	9		4		8
Weighted-average grant-date fair value per share	$	41.11	$	42.48	$	18.77
Aggregate vesting-date fair value of shares vested	$	248	$	259	$	115

Schedule of Option Activity

Option activity for 2019 is summarized as follows:

	Number of Shares		Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life (In Years)	Aggregate Intrinsic Value
Outstanding as of August 30, 2018	18		$	23.38
Granted	—		44.30
Exercised	(5	)	17.50
Canceled or expired	(1	)	22.60
Outstanding as of August 29, 2019	12		25.94		4.3	$	220
Exercisable as of August 29, 2019	7		$	25.37	3.7	$	143
Unvested as of August 29, 2019	5		26.94		5.5	77

Stock Options Granted and Valuation Assumptions

Stock options granted and assumptions used in the Black-Scholes option valuation model were as follows:

For the year ended	2019			2018			2017
Stock options granted	—			2			8
Weighted-average grant-date fair value per share	$	19.50		$	18.65		$	8.68
Average expected life in years	5.4			5.5			5.5
Weighted-average expected volatility	44.0		%	44.0		%	46.0		%
Weighted-average risk-free interest rate	2.9		%	2.2		%	1.8		%
Expected dividend yield	0.0		%	0.0		%	0.0		%

Employee Stock Purchase Plan Valuation Assumptions

Assumptions used in the Black-Scholes option valuation model were as follows:

For the year ended	2019			2018
Weighted-average grant-date fair value per share	$	11.60		$	14.55
Average expected life in years	0.5			0.5
Weighted-average expected volatility	45.0		%	43.0		%
Weighted-average risk-free interest rate	2.2		%	2.2		%
Expected dividend yield	0.0		%	0.0		%

Stock-based Compensation Expense by Caption

For the year ended	2019		2018		2017
Stock-based compensation expense by caption
Cost of goods sold	$	102	$	83	$	88
Selling, general, and administrative	73		61		75
Research and development	68		54		52
	$	243	$	198	$	215
Stock-based compensation expense by type of award
Restricted stock awards	$	178	$	140	$	144
Stock options	33		55		71
ESPP	32		3		—
	$	243	$	198	$	215