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Pension and Postretirement Benefit Plans
 3 Months Ended
Apr. 04, 2021
Retirement Benefits [Abstract]  
Pension and Postretirement Benefit Plans Pension and Postretirement Benefit Plans
As discussed in Note 1C, we adopted a change in accounting principle to a more preferable policy under U.S. GAAP to immediately recognize actuarial gains and losses arising from the remeasurement of pension and postretirement plans. This change has been applied to all pension and postretirement plans on a retrospective basis for all prior periods presented.
The following summarizes the components of net periodic benefit cost/(credit), including in 2020 costs/(credits) reported as part of discontinued operations:
 Pension Plans
 U.S.InternationalPostretirement
Plans
Three Months Ended
(MILLIONS)April 4,
2021		March 29,
2020		April 4,
2021		March 29,
2020		April 4,
2021		March 29,
2020
Service cost
$— $— $33 $36 $9 $10 
Interest cost
113 141 36 42 7 13 
Expected return on plan assets
(261)(252)(82)(81)(10)(9)
Amortization of prior service credits(1)(1)— (1)(39)(43)
Actuarial (gains)/losses(47)163 — 3 — — 
Special termination benefits
7 1 — — 1 — 
Net periodic benefit cost/(credit) reported in income
$(187)$53 $(12)$(1)$(32)$(30)
The components of net periodic benefit cost/(credit) other than the service cost component are included in Other (income)/deductions––net (see Note 4).
For the three months ended April 4, 2021, we contributed $83 million, $40 million, and $19 million to our U.S. Pension Plans, International Pension Plans, and Postretirement Plans, respectively, from our general assets, which include direct employer benefit payments.