Stock-Based Compensation (Tables)

3 Months Ended

Dec. 27, 2014

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
	December 27, 2014		December 28, 2013
Cost of revenues	$	2.0	$	1.5
Research and development	1.9		1.9
Selling and marketing	2.0		1.7
General and administrative	6.1		3.8
Restructuring and divestiture	0.1		4.8
	$	12.1	$	13.7

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 27, 2014			December 28, 2013
Risk-free interest rate	1.7		%	1.2		%
Expected volatility	38.6		%	41.4		%
Expected life (in years)	5.3			4.4
Dividend yield	—			—
Weighted average fair value of options granted	$	9.44		$	7.64