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RETIREMENT BENEFITS - Roll Forward of Projected Benefit Obligations (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 29, 2023 | Dec. 30, 2022 | Dec. 31, 2021
Change in benefit obligation |  |  |
Benefit obligation at beginning of fiscal year | $ 7,722 | $ 10,355 |
Service cost | 35 | 46 |
Interest cost | 397 | 227 |
Actuarial loss (gain) | 279 | (2,204) |
Benefits paid | (591) | (648) |
Expenses paid | (34) | (26) |
Currency translation adjustment | 10 | (28) |
Acquisitions | 974 | 0 |
Divestiture | 0 | (8) |
Other | 2 | 8 |
Benefit obligation at end of fiscal year | 8,794 | 7,722 | $ 10,355
Pension |  |  |
Change in benefit obligation |  |  |
Benefit obligation at beginning of fiscal year | 7,494 | 10,007 |
Service cost | 33 | 44 | 66
Interest cost | 386 | 220 | 188
Actuarial loss (gain) | 280 | (2,097) |
Benefits paid | (568) | (626) |
Expenses paid | (34) | (26) |
Currency translation adjustment | 10 | (28) |
Acquisitions | 960 | 0 |
Divestiture | 0 | (8) |
Other | 2 | 8 |
Benefit obligation at end of fiscal year | 8,563 | 7,494 | 10,007
Reduction in pension benefit obligations for plan assets transferred to annuity |  | 64 | 250
Other Benefits |  |  |
Change in benefit obligation |  |  |
Benefit obligation at beginning of fiscal year | 228 | 348 |
Service cost | 2 | 2 | 2
Interest cost | 11 | 7 | 5
Actuarial loss (gain) | (1) | (107) |
Benefits paid | (23) | (22) |
Expenses paid | 0 | 0 |
Currency translation adjustment | 0 | 0 |
Acquisitions | 14 | 0 |
Divestiture | 0 | 0 |
Other | 0 | 0 |
Benefit obligation at end of fiscal year | $ 231 | $ 228 | $ 348

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- Definition Amount of (increase) decrease in accumulated benefit obligation of defined benefit plan from effects of settlement and curtailment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (r) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of increase in benefit obligation of defined benefit plan from business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(8) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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