Equity Plans (Tables)

6 Months Ended

Mar. 02, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock options granted and assumptions used in Black-Scholes option valuation model

	Quarter ended						Six months ended
	March 2, 2017			March 3, 2016			March 2, 2017			March 3, 2016
Stock options granted	4			5			6			7
Weighted-average grant-date fair value per share	$	8.37		$	6.59		$	8.15		$	7.01
Average expected life in years	5.5			5.5			5.5			5.5
Weighted-average expected volatility	47		%	47		%	47		%	47		%
Weighted-average risk-free interest rate	1.9		%	1.7		%	1.8		%	1.7		%
Expected dividend yield	0		%	0		%	0		%	0		%

Schedule of restricted stock awards activity

	Quarter ended				Six months ended
	March 2, 2017		March 3, 2016		March 2, 2017		March 3, 2016
Restricted stock awards granted	5		6		8		9
Weighted-average grant-date fair value per share	$	18.67	$	14.71	$	18.52	$	15.84

Stock-based compensation expense by caption

	Quarter ended				Six months ended
	March 2, 2017		March 3, 2016		March 2, 2017		March 3, 2016
Stock-based compensation expense by caption
Cost of goods sold	$	23	$	19	$	42	$	37
Selling, general, and administrative	18		21		33		38
Research and development	14		15		26		26
	$	55	$	55	$	101	$	101
Stock-based compensation expense by type of award
Stock options	$	18	$	22	$	35	$	42
Restricted stock awards	37		33		66		59
	$	55	$	55	$	101	$	101