Stock-Based Compensation (Tables)

9 Months Ended

Jun. 27, 2015

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 Operations:



	Three Months Ended				Nine Months Ended
	June 27, 2015		June 28, 2014		June 27, 2015		June 28, 2014
Cost of revenues	$	2.3	$	1.9	$	6.5	$	5.5
Research and development	2.0		2.2		6.1		6.3
Selling and marketing	2.1		2.0		6.4		6.1
General and administrative	9.4		5.2		22.5		14.7
Restructuring and divestiture	0.6		1.7		0.7		6.5
	$	16.4	$	13.0	$	42.2	$	39.1

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
	June 27, 2015			June 28, 2014			June 27, 2015			June 28, 2014
Risk-free interest rate	1.7		%	1.3		%	1.7		%	1.2		%
Expected volatility	38.6		%	41.4		%	38.6		%	41.4		%
Expected life (in years)	5.3			4.5			5.3			4.4
Dividend yield	—			—			—			—
Weighted average fair value of options granted	$	12.07		$	7.97		$	9.73		$	7.64