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Retirement Benefit Plans
 3 Months Ended
Jul. 28, 2017
Retirement Benefits [Abstract]  
Retirement Benefit Plans
Retirement Benefit Plans
The Company sponsors various retirement benefit plans, including defined benefit pension plans (pension benefits), post-retirement medical plans, defined contribution savings plans, and termination indemnity plans, covering substantially all U.S. employees and many employees outside the U.S. The net periodic benefit cost of the defined benefit pension plans included the following components for the three months ended July 28, 2017 and July 29, 2016:
 
U.S. Pension Benefits
 
Non-U.S. Pension Benefits
 
Three months ended
 
Three months ended
(in millions)
July 28, 2017
 
July 29, 2016
 
July 28, 2017
 
July 29, 2016
Service cost
$
29

 
$
29

 
$
17

 
$
19

Interest cost
30

 
27

 
7

 
6

Expected return on plan assets
(52
)
 
(47
)
 
(13
)
 
(12
)
Amortization of net actuarial loss
20

 
23

 
4

 
4

Net periodic benefit cost
$
27

 
$
32

 
$
15

 
$
17