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Equity Plans (Tables)
12 Months Ended
Sep. 02, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Restricted Stock Awards Activity
Number of SharesWeighted-Average Grant Date Fair Value Per Share
Outstanding as of September 3, 202017 $42.13 
Granted11 53.58 
Restrictions lapsed(6)38.99 
Canceled(2)41.54 
Outstanding as of September 2, 202120 49.39 
For the year ended202120202019
Restricted stock award shares granted1189
Weighted-average grant-date fair value per share$53.58 $46.44 $41.11 
Aggregate vesting-date fair value of shares vested$385 $294 $248 
Employee Stock Purchase Plan Valuation Assumptions
For the year ended202120202019
Weighted-average grant-date fair value per share$20.71 $14.24 $11.60 
Average expected life in years0.50.50.5
Weighted-average expected volatility41 %45 %45 %
Weighted-average risk-free interest rate0.1 %0.8 %2.2 %
Expected dividend yield0.3 %0.0 %0.0 %
Stock-based Compensation Expense
For the year ended202120202019
Stock-based compensation expense by caption
Cost of goods sold$186 $139 $102 
Research and development110 86 68 
Selling, general, and administrative99 103 73 
$395 $328 $243 
Stock-based compensation expense by type of award
Restricted stock awards$333 $272 $178 
ESPP52 39 32 
Stock options10 17 33 
$395 $328 $243