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Equity Plans (Tables)
12 Months Ended
Aug. 31, 2023
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 1, 202223 $60.93 
Granted17 55.99 
Restrictions lapsed(9)58.23 
Canceled(2)58.00 
Outstanding as of August 31, 202329 59.11 
For the year ended202320222021
Restricted stock award shares granted171311
Weighted-average grant-date fair value per share$55.99 $70.81 $53.58 
Aggregate vesting-date fair value of shares vested
$514 $498 $385 
Employee Stock Purchase Plan Valuation Assumptions
For the year ended202320222021
Weighted-average grant-date fair value per share$17.06 $18.87 $20.71 
Average expected life in years0.50.50.5
Weighted-average expected volatility (based on implied volatility)37 %43 %41 %
Weighted-average risk-free interest rate5.1 %2.0 %0.1 %
Expected dividend yield0.7 %0.6 %0.3 %
Stock-based Compensation Expense
For the year ended202320222021
Stock-based compensation expense by caption
Research and development$226 $175 $110 
Cost of goods sold201 193 186 
Selling, general, and administrative137 133 99 
Restructure(7)(5)— 
$557 $496 $395 
Stock-based compensation expense by type of award
Restricted stock awards$488 $429 $333 
ESPP69 66 52 
Stock options— 10 
$557 $496 $395