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Nonpension Postretirement and Postemployment Benefits (Tables)
 12 Months Ended
Jan. 01, 2022
Nonpension Postretirement [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
(millions)20212020
Change in accumulated benefit obligation
Beginning of year$1,157 $1,116 
Service cost13 13 
Interest cost20 31 
Actuarial (gain) loss(68)55 
Benefits paid(57)(58)
End of year$1,065 $1,157 
Change in plan assets
Fair value beginning of year$1,491 $1,364 
Actual return on plan assets175 178 
Employer contributions16 24 
Benefits paid(74)(75)
Fair value end of year$1,608 $1,491 
Funded status$543 $334 
Amounts recognized in the Consolidated Balance Sheet consist of
Other assets$577 $369 
Other current liabilities(2)(1)
Other liabilities(32)(34)
Net amount recognized$543 $334 
Amounts recognized in accumulated other comprehensive income consist of
Prior service credit(41)(50)
Net amount recognized$(41)$(50)
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]
Information for postretirement benefit plans with accumulated benefit obligations in excess of plan assets were:
(millions)20212020
Accumulated benefit obligation$34 $35 
Fair value of plan assets$— $— 
Schedule of Net Benefit Costs [Table Text Block]
(millions)202120202019
Service cost$13 $13 $15 
Interest cost20 31 37 
Expected return on plan assets(92)(94)(86)
Amortization of unrecognized prior service credit(9)(9)(9)
Recognized net (gain) loss(152)(29)(137)
Net periodic benefit expense (income)(220)(88)(180)
Curtailment— — (6)
Postretirement benefit expense (income):
Defined benefit plans(220)(88)(186)
Defined contribution plans13 13 11 
Total$(207)$(75)$(175)
Defined Benefit Plan, Assumptions [Table Text Block]
202120202019
Discount rate2.9 %2.5 %3.3 %
The weighted-average actuarial assumptions used to determine annual net periodic benefit cost were:
202120202019
Discount rate2.5 %3.3 %4.0 %
Long-term rate of return on plan assets6.3 %7.0 %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$1 $2 1$— $— $3 
Corporate stock, common263 — — — 263 
Mutual funds:
Equity— 39 — — 39 
Debt— 94 — — 94 
Collective trusts:
Equity— — — 616 616 
Limited partnerships— — — 132 132 
Bonds, corporate— 247 — — 247 
Bonds, government— 99 — — 99 
Bonds, other— 13 — — 13 
Real estate— — — 102 102 
Total$264 $494 $— $850 $1,608 
(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$3 $3 $— $— $6 
Corporate stock, common261 — — — 261 
Mutual funds:
Equity— 30 — — 30 
Debt— 54 — — 54 
Collective trusts:
Equity— — — 669 669 
Limited partnerships— — — 135 135 
Bonds, corporate— 143 — — 143 
Bonds, government— 96 — — 96 
Bonds, other— 8 — — 8 
Real estate— — — 89 89 
Total$264 $334 $— $893 $1,491 
(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.
Postemployment [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
(millions)20212020
Change in accumulated benefit obligation
Beginning of year$48 $48 
Service cost3 3 
Interest cost1 1 
Actuarial (gain)loss1 — 
Benefits paid(5)(4)
End of year$48 $48 
Funded status$(48)$(48)
Amounts recognized in the Consolidated Balance Sheet consist of
Other current liabilities$(5)$(6)
Other liabilities(43)(42)
Net amount recognized$(48)$(48)
Amounts recognized in accumulated other comprehensive income consist of
Net prior service cost$1 $2 
Net experience gain(14)(18)
Net amount recognized$(13)$(16)
Schedule of Net Benefit Costs [Table Text Block]
(millions)202120202019
Service cost$3 $2 $3 
Interest cost1 1 2 
Amortization of unrecognized prior service cost1 1 1 
Recognized net loss(2)(3)(5)
Net periodic benefit cost$3 $1 $1 
Settlement cost(1)(1)(3)
Postemployment benefit expense$2 $— $(2)
Schedule of Expected Benefit Payments [Table Text Block]
(millions)PostretirementPostemployment
2022$64 $5 
202364 7 
202464 6 
202564 5 
202664 5 
2027-2031312 21