Share-Based Compensation (Tables)

12 Months Ended

Mar. 31, 2018

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

Option Activity and Information about Options Outstanding

The following table summarizes the share options activity during Fiscal 2018, and information about options outstanding at March 31, 2018:

	Number of Options		Weighted Average Exercise price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
Outstanding at April 1, 2017	4,791,045		$	28.55
Granted	208,264		$	34.68
Exercised	(1,116,857	)	$	12.34
Canceled/forfeited	(85,832	)	$	67.04
Outstanding at March 31, 2018	3,796,620		$	32.78	2.63	$	124.6
Vested or expected to vest at March 31, 2018	3,776,873		$	32.78	2.63
Vested and exercisable at March 31, 2018	3,132,123		$	29.28	2.19	$	112.8

Assumptions Used to Estimate Fair Value of Options

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

	Fiscal Years Ended
	March 31, 2018		April 1, 2017		April 2, 2016
Expected dividend yield	0.0	%	0.0	%	0.0	%
Volatility factor	36.3	%	30.1	%	31.1	%
Weighted average risk-free interest rate	1.8	%	1.1	%	1.6	%
Expected life of option	4.69 years		4.75 years		4.75 years

Restricted Shares and Restricted Share Units

The following table summarizes the RSU activity during Fiscal 2018:

	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 April 1, 2017	1,470,767		$	48.39	401,777		$	58.50
Granted	1,390,454		$	38.57	363,848		$	51.56
Decrease due to performance condition	—		$	—	(12,891	)	$	92.93
Vested	(453,695	)	$	48.20	(95,202	)	$	84.95
Canceled/forfeited	(280,009	)	$	44.46	—		$	—
Unvested at March 31, 2018	2,127,517		$	42.53	657,532		$	50.16

The following table summarizes restricted share activity during Fiscal 2018:

	Restricted Shares
	Number of Unvested Restricted Shares		Weighted Average Grant Date Fair Value
Unvested at April 1, 2017	185,425		$	84.12
Granted	—		$	—
Vested	(114,121	)	$	79.97
Canceled/forfeited	(7,156	)	$	90.87
Unvested at March 31, 2018	64,148		$	90.75

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

The following table summarizes compensation expense attributable to share-based compensation for Fiscal 2018, Fiscal 2017 and Fiscal 2016 (in millions):

	Fiscal Years Ended
	March 31, 2018		April 1, 2017		April 2, 2016
Share-based compensation expense	$	49.6	$	33.9	$	48.4
Tax benefits related to share-based compensation expense	$	9.7	$	11.2	$	15.7