Stockholders' Equity And Stock-Based Compensation (Tables)

12 Months Ended

Sep. 30, 2016

Stockholders' Equity And Stock-Based Compensation [Abstract]

Schedule of Treasury Stock Authorizations [Table Text Block]

In November 2009, we announced a stock repurchase program ("program"), providing for the repurchase of up to $250.0 million of our Class A common stock. The following table summarizes the initial amount of authorized repurchases as well as additional repurchases approved by our Board of Directors as of September 30, 2016 (in thousands):

Authorization Period	Authorization Amount
Fiscal 2010: November 2009	$	250,000
Fiscal 2010: July 2010	300,000
Fiscal 2011: July 2011	250,000
Fiscal 2012: February 2012	100,000
Fiscal 2015: October 2014	200,000
Total	$	1,100,000

Schedule Of Fair Value Of Stock-Based Awards Estimated Using Weighted-Average Assumptions

The weighted-average assumptions used in the determination of the fair value of our stock options were as follows:

	Fiscal Year Ended
	September 30, 2016		September 25, 2015		September 26, 2014
Expected term (in years)	5.24		4.64		4.58
Risk-free interest rate	1.7	%	1.5	%	1.4	%
Expected stock price volatility	29.8	%	29.6	%	32.0	%
Dividend yield	1.4	%	0.9	%	—	%

Summary Of Weighted-Average Fair Value Of Stock Options Granted And Total Intrinsic Value Of Stock Options Exercised

The following table summarizes the weighted-average fair value (per share) of stock options granted and the total intrinsic value of stock options exercised (in thousands):

	Fiscal Year Ended
	September 30, 2016		September 25, 2015		September 26, 2014
Stock options granted - weighted-average grant date fair value	$	8.49	$	10.54	$	11.11
Stock options exercised - intrinsic value	27,485		8,546		15,300

Summary Of Stock Options Issued To Officers, Directors, And Employees Under 2000 Stock Incentive Plan And 2005 Stock Plan

The following table summarizes information about stock options issued under our 2005 Stock Plan:

	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life	Aggregate Intrinsic Value (1)
	(in thousands)				(in years)	(in thousands)
Options outstanding at September 25, 2015	8,835		$	35.85
Grants	2,220		33.42
Exercises	(1,930	)	31.81
Forfeitures and cancellations	(435	)	37.33
Options outstanding at September 30, 2016	8,690		35.98		7.1	$	159,230
Options vested and expected to vest at September 30, 2016	8,172		35.97		7.0	149,856
Options exercisable at September 30, 2016	4,638		$	35.08	6.0	88,040

Summary Of Stock Options Outstanding And Exercisable

The following table summarizes information about stock options outstanding and exercisable at September 30, 2016:

	Outstanding Options				Options Exercisable
Range of Exercise Price	Shares	Weighted-Average Remaining Contractual Life	Weighted-Average Exercise Price		Shares	Weighted-Average Exercise Price
	(in thousands)	(in years)			(in thousands)
$24.60 - $28.90	1,153	4.4	$	28.22	1,153	$	28.22
$28.91 - $33.40	3,129	7.7	32.25		963	30.48
$33.41 - $37.33	168	5.7	35.20		112	34.83
$37.34 - $42.95	2,163	7.1	38.42		1,467	38.43
$42.96 - $47.45	1,998	7.8	43.09		881	43.15
$47.46 - $58.07	59	4.7	49.26		42	49.00
$58.08 - $62.29	20	4.2	59.69		20	59.69
	8,690				4,638

Summary Of Restricted Stock Units Issued To Officers, Directors And Employees Under 2005 Stock Incentive Plan

The following table summarizes information about RSUs issued under our 2005 Stock Plan:

	Shares		Weighted-Average Grant Date Fair Value
	(in thousands)
Non-vested at September 25, 2015	2,830		$	40.73
Granted	1,407		35.04
Vested	(1,122	)	35.82
Forfeitures	(243	)	37.16
Non-vested at September 30, 2016	2,872		$	40.16

Schedule of Share-Based Payment Fair Value by Vesting Date

The fair value as of the respective vesting dates of RSUs were as follows (in thousands):

	Fiscal Year Ended
	September 30, 2016		September 25, 2015		September 26, 2014
Restricted stock units - vest date fair value	$	40,283	$	45,175	$	40,810

Schedule Of Stock-Based Compensation Expense By Plan

The following tables separately present stock-based compensation expense both by award type and classification within our consolidated statements of operations (in thousands):

Expense - By Award Type

	Fiscal Year Ended
	September 30, 2016			September 25, 2015			September 26, 2014
Stock options	$	21,311		$	22,972		$	19,680
Restricted stock units	42,201			40,332			42,221
Employee stock purchase plan	3,473			3,765			3,779
Total stock-based compensation	66,985			67,069			65,680
Benefit from income taxes	(19,627		)	(19,606		)	(19,315		)
Total stock-based compensation, net of tax	$	47,358		$	47,463		$	46,365

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

Expense - By Income Statement Classification

	Fiscal Year Ended
Compensation Expense - By Classification	September 30, 2016			September 25, 2015			September 26, 2014
Cost of products	$	859		$	949		$	812
Cost of services	547			457			402
Research and development	17,771			18,682			18,510
Sales and marketing	27,579			24,283			23,236
General and administrative	20,229			22,698			22,720
Total stock-based compensation	66,985			67,069			65,680
Benefit from income taxes	(19,627		)	(19,606		)	(19,315		)
Total stock-based compensation, net of tax	$	47,358		$	47,463		$	46,365

Schedule of Stock Repurchase Activity

The following table provides information regarding share repurchase activity under the program in fiscal 2016:

Quarterly Repurchase Activity	Shares Repurchased	Cost (1)		Average Price Paid Per Share (2)
		(in thousands)
Q1 - Quarter ended January 1, 2016	1,140,700	$	39,449	$	34.57
Q2 - Quarter ended April 1, 2016	975,745	37,407		38.32
Q3 - Quarter ended July 1, 2016	176,854	7,998		45.22
Q4 - Quarter ended September 30, 2016	323,085	16,000		49.51
Total	2,616,384	$	100,854

(1) Cost of share repurchases includes the price paid per share and applicable commissions.

(2) Average price paid per share excludes commission costs.

Schedule of Tax Benefit from Exercise of Options [Table Text Block]

The tax benefit that we recognize from certain exercises of ISOs and shares issued under our ESPP are excluded from the tables above. This benefit was as follows (in thousands):

	Fiscal Year Ended
	September 30, 2016		September 25, 2015		September 26, 2014
Tax benefit - stock option exercises & shares issued under ESPP	$	550	$	328	$	538