Stock-Based Compensation (Tables)

3 Months Ended

Dec. 28, 2019

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 Operations:

	Three Months Ended
	December 28, 2019		December 29, 2018
Cost of revenues	$	2.0	$	2.0
Research and development	2.4		2.7
Selling and marketing	2.8		2.7
General and administrative	10.9		9.7
	$	18.1	$	17.1

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 Ended
	December 28, 2019			December 29, 2018
Risk-free interest rate	1.7		%	3.0		%
Expected volatility	33.6		%	34.3		%
Expected life (in years)	4.8			4.8
Dividend yield	—			—
Weighted average fair value of options granted	$	13.83		$	13.41