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Pension Benefits (Tables) - Pension
 12 Months Ended
Jan. 01, 2022
Defined Benefit Plan Disclosure [Line Items]  
Components of Company Plan Benefit Expense [Table Text Block]
(millions)20212020
Change in projected benefit obligation
Beginning of year$5,675 $5,654 
Service cost36 37 
Interest cost98 130 
Plan participants’ contributions1 1 
Amendments18 22 
Actuarial (gain)loss(130)499 
Benefits paid(423)(292)
Curtailment and special termination benefits(1)(15)
Settlements— (453)
Foreign currency adjustments(38)92 
End of year$5,236 $5,675 
Change in plan assets
Fair value beginning of year$5,211 $5,170 
Actual return on plan assets184 656 
Employer contributions4 8 
Plan participants’ contributions1 1 
Benefits paid(397)(269)
Settlements— (453)
Other— (8)
Foreign currency adjustments(44)106 
Fair value end of year$4,959 $5,211 
Funded status$(277)$(464)
Amounts recognized in the Consolidated Balance Sheet consist of
Other assets$448 $324 
Other current liabilities(19)(19)
Pension liability(706)(769)
Net amount recognized$(277)$(464)
Amounts recognized in accumulated other comprehensive income consist of
Prior service cost$61 $51 
Net amount recognized$61 $51 
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]
(millions)20212020
Projected benefit obligation$3,623 $3,937 
Accumulated benefit obligation$3,610 $3,921 
Fair value of plan assets$2,906 $3,177 
Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets
Information for pension plans with projected benefit obligations in excess of plan assets were:
(millions)20212020
Projected benefit obligation$3,707 $4,035 
Accumulated benefit obligation$3,669 $3,988 
Fair value of plan assets$2,984 $3,246 
Schedule of Net Benefit Costs [Table Text Block]
(millions)202120202019
Service cost$36 $37 $36 
Interest cost98 130 172 
Expected return on plan assets(301)(340)(340)
Amortization of unrecognized prior service cost8 7 7 
Other expense— 8 — 
Recognized net (gain) loss(12)184 235 
Net periodic benefit cost(171)26 110 
Curtailment and special termination benefits(1)(15)(13)
Pension (income) expense:
Defined benefit plans(172)11 97 
Defined contribution plans7 20 20 
Total$(165)$31 $117 
Defined Benefit Plan, Assumptions [Table Text Block]
202120202019
Discount rate2.6 %2.2 %2.9 %
Long-term rate of compensation increase3.5 %3.4 %3.4 %

The worldwide weighted-average actuarial assumptions used to determine annual net periodic benefit cost were:
202120202019
Discount rate2.3 %2.8 %3.7 %
Long-term rate of compensation increase3.4 %3.4 %4.0 %
Long-term rate of return on plan assets6.0 %6.8 %7.3 %
Schedule of Allocation of Plan Assets [Table Text Block]
(millions)Total
Level 1		Total
Level 2		Total
Level 3		Total
NAV (practical expedient)(a)		Total
Cash and cash equivalents$36 $(5)$— $— $31 
Corporate stock, common318 — — — 318 
Mutual funds:
Debt— 51 — — 51 
Collective trusts:
Equity— — — 1,034 1,034 
Debt— 599 — 477 1,076 
Limited partnerships— — — 207 207 
Bonds, corporate— 396 — 370 766 
Bonds, government— 597 — — 597 
Bonds, other— 87 — — 87 
Real estate— — — 416 416 
Buy-in annuity contract— — 269 — 269 
Other— 104 — 3 107 
Total$354 $1,829 $269 $2,507 $4,959 
(a) Certain assets that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy.
The fair value of Plan assets at January 2, 2021 are summarized as follows:
(millions)Total
Level 1		Total
Level 2		Total
Level 3		Total
NAV (practical expedient)(a)		Total
Cash and cash equivalents$35 $4 $— $3 $42 
Corporate stock, common325 — — — 325 
Mutual funds:
Equity— — — 2 2 
Debt— 5 — — 5 
Collective trusts:
Equity— — — 1,508 1,508 
Debt— 548 — 415 963 
Limited partnerships— — — 292 292 
Bonds, corporate— 220 — 141 361 
Bonds, government— 861 — — 861 
Bonds, other— 64 — — 64 
Real estate— — — 421 421 
Buy-in annuity contract— — 280 — 280 
Other— 78 — 9 87 
Total$360 $1,780 $280 $2,791 $5,211 
(a) Certain assets that are measured at fair value using the NAV per share (or its equivalent) practical expedient have not been classified in the fair value hierarchy.
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets
Changes in fair value of the Plan's Level 3 assets are summarized as follows:
(millions)Annuity Contract
December 28, 2019$— 
Purchases268 
Realized and unrealized gain4 
Currency translation8 
January 2, 2021$280 
Realized and unrealized loss(9)
Currency translation(2)
January 1, 2022$269