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Pensions and Other Postretirement Benefits (Tables)
 6 Months Ended
Jul. 02, 2017
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
Net periodic benefit cost for the Company’s defined benefit retirement plans and other benefit plans for the fiscal six months of 2017 and 2016 include the following components:

 
 
Fiscal Six Months Ended
 
 
Retirement Plans
 
Other Benefit Plans
(Dollars in Millions)
 
July 2, 2017
 
July 3, 2016
 
July 2, 2017
 
July 3, 2016
Service cost
 
$
506

 
452

 
123

 
110

Interest cost
 
461

 
466

 
79

 
79

Expected return on plan assets
 
(1,014
)
 
(985
)
 
(3
)
 
(3
)
Amortization of prior service cost/(credit)
 
1

 
—

 
(15
)
 
(16
)
Recognized actuarial losses
 
302

 
248

 
69

 
68

Curtailments and settlements
 
(1
)
 
5

 
—

 
—

Net periodic benefit cost
 
$
255

 
186

 
253

 
238

 
 
 
 
 
 
 
 
 
Net periodic benefit cost for the Company’s defined benefit retirement plans and other benefit plans for the fiscal second quarters of 2017 and 2016 include the following components:
 
 
Fiscal Second Quarters Ended
 
 
Retirement Plans
 
Other Benefit Plans
(Dollars in Millions)
 
July 2, 2017
 
July 3, 2016
 
July 2, 2017
 
July 3, 2016
Service cost
 
$
255

 
226

 
62

 
55

Interest cost
 
231

 
233

 
40

 
39

Expected return on plan assets
 
(509
)
 
(493
)
 
(1
)
 
(1
)
Amortization of prior service cost/(credit)
 
1

 
(1
)
 
(8
)
 
(8
)
Recognized actuarial losses
 
150

 
124

 
35

 
34

Curtailments and settlements
 
(1
)
 
4

 
—

 
—

Net periodic benefit cost
 
$
127

 
93

 
128

 
119