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Stock-based Compensation (Tables)
 6 Months Ended
Sep. 29, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of the total compensation expense and the associated income tax benefits recognized related to stock-based compensation arrangements
A summary of total stock-based compensation expense and the related income tax benefits recognized during the three-month and six-month periods ended September 29, 2018 and September 30, 2017 is as follows:
 
 
Three Months Ended
 
Six Months Ended
 
 
 
September 29,
2018
 
September 30,
2017
 
September 29,
2018
 
September 30,
2017
 
 
 
(millions)
 
Compensation expense
 
$
21.3

 
$
17.8

 
$
42.8

 
$
39.4

(a) 
Income tax benefit
 
(3.3
)
 
(6.7
)
 
(6.5
)
 
(14.6
)
 

 
(a) 
The six months ended September 30, 2017 includes $2.1 million of accelerated stock-based compensation expense recorded within restructuring and other charges in the consolidated statements of operations (see Note 8). All other stock-based compensation expense was recorded within SG&A expenses.
Summary of the stock option activity under all plans
A summary of stock option activity under all plans during the six months ended September 29, 2018 is as follows:
 
 
Number of Options
 
 
(thousands)
Options outstanding at March 31, 2018
 
1,151

Granted
 
—

Exercised
 
(162
)
Cancelled/Forfeited
 
(134
)
Options outstanding at September 29, 2018
 
855
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share Based Payment Award with Market Condition Valuation Assumptions [Table Text Block]
The assumptions used to estimate the fair value of TSR awards granted during the six months ended September 29, 2018 were as follows:
 
 
Six Months Ended
 
 
September 29,
2018
Expected term (years)
 
2.6

Expected volatility
 
33.5
%
Expected dividend yield
 
1.9
%
Risk-free interest rate
 
2.6
%
Restricted Stock And Service Based Restricted Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of restricted stock and restricted stock unit activity
A summary of restricted stock and service-based RSU activity during the six months ended September 29, 2018 is as follows:
 
 
Number of Shares
 
 
Restricted Stock
 
Service-based RSUs
 
 
(thousands)
Nonvested at March 31, 2018
 
19

 
1,072

Granted
 
—

 
560

Vested
 
(9
)
 
(412
)
Forfeited
 
—

 
(95
)
Nonvested at September 29, 2018
 
10

 
1,125
Performance-based restricted stock units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of restricted stock and restricted stock unit activity
A summary of performance-based RSU activity during the six months ended September 29, 2018 is as follows:
 
 
Number of Performance-based
RSUs
 
 
(thousands)
Nonvested at March 31, 2018
 
1,157

Granted
 
154

Change due to performance condition achievement
 
(29
)
Vested
 
(232
)
Forfeited
 
(20
)
Nonvested at September 29, 2018
 
1,030
Market-based restricted stock units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of restricted stock and restricted stock unit activity
A summary of market-based RSU activity during the six months ended September 29, 2018 is as follows:
 
 
Number of
Market-based RSUs
 
 
(thousands)
Nonvested at March 31, 2018
 
—

Granted
 
80

Change due to market condition achievement
 
—

Vested
 
—

Forfeited
 
—

Nonvested at September 29, 2018
 
80