Employee Compensation Plans (Tables)

12 Months Ended

Sep. 26, 2015

Compensation Plans

Summary of option activity

	Number of Shares			Weighted Average Exercise Price (per share)
Outstanding at September 27, 2014		3,436,727		$	25.24
Granted		201,798		$	137.31
Exercised		(1,520,757	)	$	10.89
Forfeited/expired		(77,799	)	$	80.75
Outstanding at September 26, 2015		2,039,969		$	44.91
Exercisable at September 26, 2015		1,413,283		$	28.82

Summary of information about stock options vested and expected to vest

Number of options outstanding	Weighted average remaining contractual life (in years)		Weighted average exercise price		Intrinsic value at September 26, 2015 (in thousands)
2,036,855		5.53	$	44.83	$	43,169

Summary of information about stock options exercisable

Number of options exercisable	Weighted average remaining contractual life (in years)		Weighted average exercise price		Intrinsic value at September 26, 2015 (in thousands)
1,413,283		4.41	$	28.82	$	40,858

Schedule of assumptions used in estimating the grant-date fair value of employee stock options and similar instruments

	Fiscal 2015			Fiscal 2014			Fiscal 2013
Average expected life		5.5 years			5.5 years			6.0 years
Average volatility		57	%		74	%		81	%
Dividend yield		0.84	%		1.30	%		—	%
Risk-free interest rate		1.61	%		1.70	%		1.02	%
Weighted average grant date fair value	$	66.19		$	42.38		$	31.23

Summary of the number and weighted average grant-date fair value of nonvested RSUs

	Share Units			Weighted Average Grant-Date Fair Value		Weighted Average Remaining Contractual Life (in Years)		Intrinsic Value (in Thousands)
Nonvested, September 27, 2014		409,173		$	86.50		3.26	$	53,450
Granted		154,064		$	116.80
Vested		(128,465	)	$	65.96
Forfeited		(20,359	)	$	114.12
Nonvested, September 26, 2015		414,413		$	102.78		2.23	$	23,008

Summary of the number and weighted average grant-date fair value of nonvested PSUs

	Share Units			Weighted Average Grant-Date Fair Value
Outstanding on September 27, 2014		195,782		$	67.38
Granted		45,216		$	138.08
Converted		(75,421	)	$	41.52
Forfeited		(5,451	)	$	124.73
Actual performance change(1)		(52,528	)	$	91.59
Outstanding on September 26, 2015(2)		107,598		$	78.43

(1)	Reflects the net number of PSUs above and below target levels based on actual performance measured at the end of the performance period.
(2)	The outstanding PSUs, for which the performance period has not ended as of September 26, 2015, at the threshold award and maximum award levels, were 65,392 and 149,804, respectively. Does not include shares underlying the performance stock units granted in fiscal 2014 as the performance period has concluded and the threshold performance criteria was not achieved.

Schedule of assumptions used in estimating the grant-date fair value of employees' purchase rights under the ESPP

	Fiscal 2015			Fiscal 2014			Fiscal 2013
Average expected life		6 months			6 months			6 months
Average volatility		35	%		55	%		86	%
Dividend yield		1.55	%		1.14	%		—	%
Risk-free interest rate		0.10	%		0.06	%		0.13	%
Weighted average grant date fair value	$	20.28		$	26.06		$	14.38

Schedule of stock-based compensation expense recognized

Stock-based compensation expense recognized in the Consolidated Statements of Operations in fiscal years 2015, 2014, and 2013 (in thousands):

	Fiscal 2015		Fiscal 2014		Fiscal 2013
Options	$	13,464	$	13,029	$	14,151
RSUs/PSUs/RSAs		14,746		13,200		7,529
ESPP		3,724		4,444		4,401
Total stock-based compensation expense recognized in the Consolidated Statements of Operations	$	31,934	$	30,673	$	26,081
Total related tax benefit	$	12,065	$	12,005	$	9,936