EMPLOYEE STOCK PLANS (Tables)

6 Months Ended

Mar. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

The table below summarizes the net share-based compensation expense recognized for employee stock awards and for the option component of the employee stock purchase plan shares:



	Three Months Ended						Six Months Ended
(In millions)	March 31, 2017			April 1, 2016			March 31, 2017			April 1, 2016
Cost of revenues - Product	$	0.8		$	0.8		$	1.6		$	1.7
Cost of revenues - Service	1.1			1.0			2.1			1.9
Research and development	1.4			1.4			2.6			2.6
Selling, general and administrative	8.1			7.7			15.3			14.7
Total share-based compensation expense	$	11.4		$	10.9		$	21.6		$	20.9
Income tax benefit for share-based compensation	$	(3.4	)	$	(3.3	)	$	(6.4	)	$	(6.3	)

Fair Value of Employee Stock Option Plans With Weighted Average Assumptions

The fair value of options granted was estimated at the date of grant using the Black-Scholes model with the following weighted average assumptions:



	Three Months Ended						Six Months Ended
	March 31, 2017			April 1, 2016			March 31, 2017			April 1, 2016
Employee Stock Option Plans
Expected term (in years)	3.99			4.13			3.99			4.13
Risk-free interest rate	1.7		%	1.1		%	1.7		%	1.1		%
Expected volatility	21.8		%	20.0		%	21.8		%	20.0		%
Expected dividend	—		%	—		%	—		%	—		%
Weighted average fair value at grant date	$	16.13		$	13.67		$	16.13		$	13.70

Fair Value of Employee Stock Purchase Plan With Weighted Average Assumptions

The option component of employee stock purchase plan shares was estimated at the date of grant using the Black-Scholes model with the following weighted average assumptions:



	Six Months Ended
	March 31, 2017			April 1, 2016
Employee Stock Purchase Plan
Expected term (in years)	0.50			0.50
Risk-free interest rate	0.5		%	0.3		%
Expected volatility	22.3		%	17.0		%
Expected dividend	—		%	—		%
Weighted average fair value at grant date	$	19.37		$	15.59

Summary of Share-Based Awards Available for Grant

A summary of share-based awards available for grant is as follows:



(In millions)	Shares Available for Grant
Balance at September 30, 2016	4.6
Granted	(1.6	)
Cancelled or expired	0.2
Adjustment due to Distribution	(0.6	)
Balance at March 31, 2017	2.6

Activity Under Employee Stock Plans

Activity under the Company’s employee stock plans related to stock options is presented below:



	Options Outstanding
(In millions, except per share amounts)	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Term (in years)	Aggregate Intrinsic Value (1)
Balance at September 30, 2016	2.6		$	74.69
Granted	0.5		80.40
Adjustment due to Distribution	0.3		70.15
Cancelled or expired	(0.4	)	69.79
Exercised	(0.2	)	60.57
Balance at March 31, 2017	2.8		$	72.23	4.9	$	52.8

Exercisable at March 31, 2017	1.5		$	69.78	3.9	$	32.7

⁽¹⁾

The aggregate intrinsic value represents the total pre-tax intrinsic value, which is computed based on the difference between the exercise price and the closing price of VMS common stock of $91.13 as of March 31, 2017, the last trading date of the second quarter of fiscal year 2017, and which represents the amount that would have been received by the option holders had all option holders exercised their options and sold the shares received upon exercise as of that date.

Activity for Restricted Stock, Restricted Stock Units, Deferred Stock Units and Performance Units

The activity for restricted stock, restricted stock units, deferred stock units and performance units is summarized as follows:



(In millions, except per share amounts)	Number of Shares		Weighted Average Grant-Date Fair Value
Balance at September 30, 2016	1.0		$	73.10
Granted	0.4		80.75
Adjustment due to Distribution	0.1		74.18
Vested	(0.4	)	72.69
Cancelled or expired	(0.2	)	72.45
Balance at March 31, 2017	0.9		$	76.42