Share-Based Compensation (Tables)

6 Months Ended

Sep. 26, 2015

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

Summary of Share Option Activity

The following table summarizes the share option activity during the six months ended September 26, 2015:

	Number of Options		Weighted Average Exercise price
Outstanding at March 28, 2015	7,187,003		$	23.14
Granted	513,864		$	47.09
Exercised	(809,725	)	$	7.29
Canceled/forfeited	(130,838	)	$	28.47
Outstanding at September 26, 2015	6,760,304		$	26.76

Assumptions Used to Estimate Fair Value of Options

The following table represents assumptions used to estimate the fair value of options:

	Three Months Ended				Six Months Ended
	September 26 2015		September 27 2014		September 26 2015		September 27 2014
Expected dividend yield	0.0	%	0.0	%	0.0	%	0.0	%
Volatility factor	30.9	%	33.1	%	31.1	%	33.3	%
Weighted average risk-free interest rate	1.5	%	1.6	%	1.6	%	1.5	%
Expected life of option	4.75 years		4.75 years		4.75 years		4.75 years

Summary of Restricted Share and Restricted Share Unit Activity

The following table summarizes the restricted share activity during the six months ended September 26, 2015:

	Restricted Shares
	Number of Unvested Restricted Shares		Weighted Average Grant Date Fair Value
Unvested at March 28, 2015	770,592		$	68.77
Granted	—		$	—
Vested	(148,691	)	$	81.00
Canceled/forfeited	(20,975	)	$	72.67
Unvested at September 26, 2015	600,926		$	65.60

The following table summarizes the restricted share unit activity during the six months ended September 26, 2015:

	Service-based				Performance-based
	Number of Restricted Share Units		Weighted Average Grant Date Fair Value		Number of Restricted Share Units	Weighted Average Grant Date Fair Value
Unvested at March 28, 2015	35,940		$	66.26	317,201	$	76.69
Granted	998,942		$	46.54	287,476	$	47.10
Vested	(10,684	)	$	56.16	—	$	—
Canceled/forfeited	(15,619	)	$	46.58	—	$	—
Unvested at September 26, 2015	1,008,579		$	47.14	604,677	$	62.62

Summary of Compensation Expense Attributable to Share-Based Compensation

The following table summarizes compensation expense attributable to share-based compensation for the three months and six months ended September 26, 2015 and September 27, 2014 (in thousands):

	Three Months Ended				Six Months Ended
	September 26, 2015		September 27, 2014		September 26, 2015		September 27, 2014
Share-based compensation expense	$	13,358	$	13,425	$	25,864	$	21,579
Tax benefits related to share-based compensation expense	$	5,279	$	4,843	$	10,274	$	7,844