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Retirement Plans (Tables)
 3 Months Ended
Apr. 01, 2017
Retirement Plans  
Components of net periodic benefit cost (credit)

 

                                                                                                                                                                                           

 

Pension Benefits

Postretirement Benefits
Other Than Pensions

(In millions)

 

April 1,
2017

 

April 2,
2016

 

April 1,
2017

 

April 2,
2016

Three Months Ended

 

 

 

 

 

 

 

 

Service cost

$
25

$
24

$
1

$
1

Interest cost

 
80

 
85

 
3

 
4

Expected return on plan assets

 
(126)

 
(123)

 

—

 

—

Amortization of prior service cost (credit)

 
4

 
4

 
(2)

 
(6)

Amortization of net actuarial loss

 
34

 
26

 

—

 

—

 

 

 

 

 

 

 

 

 

Net periodic benefit cost (credit)

$
17

$
16

$
2

$
(1)