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Share-Based Compensation (Tables)
 6 Months Ended
Sep. 29, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation Activity
The following table summarizes the Company’s share-based compensation activity during the six months ended September 29, 2018:
 
Options
 
Restricted Shares
 
Service-Based RSUs
 
Performance-Based RSUs
Outstanding/Unvested at March 31, 2018
3,796,620

 
64,148

 
2,127,517

 
657,532

Granted
224,582

 
—

 
808,512

 
166,617

Exercised/Vested
(1,521,633
)
 
(53,473
)
 
(590,765
)
 
(105,900
)
Decrease due to performance condition
—

 
—

 
—

 
(101,744
)
Canceled/forfeited
(24,869
)
 
(429
)
 
(115,419
)
 
(29,477
)
Outstanding/Unvested at September 29, 2018
2,474,700

 
10,246

 
2,229,845

 
587,028
Assumptions Used to Estimate Fair Value of Options
The following table presents assumptions used to estimate the fair value of options granted during the six months ended September 29, 2018 and September 30, 2017:
 
Six Months Ended
 
September 29,
2018
 
September 30,
2017
Expected dividend yield
0.0
%
 
0.0
%
Volatility factor
36.9
%
 
36.3
%
Weighted average risk-free interest rate
2.8
%
 
1.8
%
Expected life of option
4.85 years

 
4.69 years
Summary of Compensation Expense Attributable to Share-Based Compensation
The following table summarizes compensation expense attributable to share-based compensation for the three and six months ended September 29, 2018 and September 30, 2017 (in millions):
 
Three Months Ended
 
Six Months Ended
 
September 29,
2018
 
September 30,
2017
 
September 29,
2018
 
September 30,
2017
Share-based compensation expense
$
13.6

 
$
10.3

 
$
26.4

 
$
21.1

Tax benefit related to share-based compensation expense
$
2.8

 
$
3.2

 
$
5.0

 
$
6.8