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Employee Benefits - Components of Plan Benefit Expense (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Apr. 03, 2021 | Mar. 28, 2020
Pension | Global Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Service cost | $ 9 | $ 9
Interest cost | 25 | 35
Expected return on plan assets | (78) | (85)
Amortization of unrecognized prior service cost (gain) | 2 | 2
Recognized net (gain) loss | (9) | 14
Total plan benefit (income) expense | (51) | (25)
Other Nonpension Postretirement | U.S. and Canada |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Service cost | 3 | 3
Interest cost | 5 | 8
Expected return on plan assets | (23) | (23)
Amortization of unrecognized prior service cost (gain) | (2) | (2)
Total plan benefit (income) expense | (17) | (14)
Postemployment | Global Plans |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Service cost | 1 | 1
Recognized net (gain) loss | (1) | (1)
Total plan benefit (income) expense | $ 0 | $ 0

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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(5) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109237824&loc=SL108413299-114919 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4587-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(5) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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