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Pension and Other Benefit Plans (Tables)
 9 Months Ended
Dec. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of defined benefit plans disclosures
The net periodic pension benefit included the following components:
 
 
Three months ended
 
Nine months ended
(in millions)
 
December 30, 2016
 
January 1, 2016
 
December 30, 2016
 
January 1, 2016
Service cost
 
6

 
6

 
$
17

 
$
19

Interest cost
 
20

 
24

 
62

 
71

Expected return on assets
 
(40
)
 
(46
)
 
(123
)
 
(137
)
Amortization of prior service costs
 
(4
)
 
(4
)
 
(13
)
 
(14
)
Recognition of actuarial (gain) loss
 
—

 
(8
)
 
—

 
(8
)
Contractual termination benefit
 
—

 
7

 
—

 
7

Net periodic pension benefit
 
$
(18
)
 
$
(21
)
 
$
(57
)
 
$
(62
)

The weighted-average rates used to determine net periodic pension cost for the three and nine months ended December 30, 2016 and January 1, 2016 were as follows:
 
 
December 30, 2016

January 1, 2016
Discount or settlement rates
 
3.1
%
 
3.0
%
Expected long-term rates of return on assets
 
6.3
%
 
6.3
%
Rates of increase in compensation levels
 
2.6
%
 
2.8
%