XML 46 R36.htm IDEA: XBRL DOCUMENT v3.22.1
Stock-Based Compensation (Tables)
6 Months Ended
Mar. 26, 2022
Share-based Payment Arrangement [Abstract]  
Stock-Based Compensation Expense in Consolidated Statements of Operations
The following presents stock-based compensation expense in the Company’s Consolidated Statements of Income:

 Three Months EndedSix Months Ended
 March 26,
2022
March 27,
2021
March 26,
2022
March 27,
2021
Cost of revenues$2.6 $2.3 $4.9 $4.5 
Research and development2.8 2.3 5.5 4.8 
Selling and marketing2.8 2.7 5.4 5.4 
General and administrative9.6 9.7 20.7 20.9 
$17.8 $17.0 $36.5 $35.6 
Weighted-Average Assumptions Utilized to Value Stock Options
The Company uses a binomial model to determine the fair value of its stock options. The weighted-average assumptions utilized to value these stock options are indicated in the following table:

 Three Months EndedSix Months Ended
 March 26,
2022
March 27,
2021
March 26,
2022
March 27,
2021
Risk-free interest rate1.1 %0.4 %1.1 %0.4 %
Expected volatility34.2 %35.0 %34.2 %35.0 %
Expected life (in years)4.84.84.84.8
Dividend yield— — — — 
Weighted average fair value of options granted$20.80 $21.17 $21.02 $20.08