Stock-Based Compensation (Tables)

9 Months Ended

Jul. 01, 2017

Disclosure of Compensation Related Costs, Share-based Payments [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 Ended				Nine Months Ended
	July 1, 2017		June 25, 2016		July 1, 2017		June 25, 2016
Cost of revenues	$	2.3	$	2.2	$	8.7	$	6.9
Research and development	2.2		2.4		9.1		7.3
Selling and marketing	3.4		2.5		9.3		7.8
General and administrative	6.5		7.4		26.3		23.1
	$	14.4	$	14.5	$	53.4	$	45.1

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						Nine Months Ended
	July 1, 2017			June 25, 2016			July 1, 2017			June 25, 2016
Risk-free interest rate	1.8		%	1.6		%	1.8		%	1.6		%
Expected volatility	36.5		%	37.8		%	36.6		%	37.8		%
Expected life (in years)	4.7			4.7			4.7			4.7
Dividend yield	—			—			—			—
Weighted average fair value of options granted	$	14.40		$	11.36		$	12.33		$	12.95