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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS (Tables)
 12 Months Ended
Dec. 31, 2022
Retirement Benefits [Abstract]  
Net Periodic Benefit Cost for Pension and Postretirement Benefit Plans
Information about net periodic benefit cost for the company-sponsored pension and postretirement defined benefit plans is as follows (in millions):
 U.S. Pension BenefitsU.S. Postretirement
Medical Benefits		International
Pension Benefits
 202220212020202220212020202220212020
Net Periodic Benefit Cost:
Service cost$2,024 $1,897 $1,853 $30 $28 $29 $68 $76 $67 
Interest cost1,950 1,948 1,977 83 81 91 45 38 40 
Expected return on plan assets(3,280)(3,327)(3,549)(4)(5)(8)(78)(68)(86)
Amortization of prior service cost93 139 218 — 7 7 1 2 2 
Actuarial (gain) loss(875)(3,284)6,211 — 24 246 (152)(12)27 
Curtailment and settlement (gain) loss— — — — — — (34)— — 
Net periodic benefit cost$(88)$(2,627)$6,710 $109 $135 $365 $(150)$36 $50 
Weighted Average Actuarial Assumptions Used Disclosure
The table below provides the weighted-average actuarial assumptions used to determine the net periodic benefit cost:
 U.S. Pension BenefitsU.S. Postretirement
Medical Benefits		International
Pension Benefits
 202220212020202220212020202220212020
Service cost discount rate3.13 %2.90 %3.60 %3.28 %2.88 %3.59 %2.78 %2.38 %3.01 %
Interest cost discount rate3.13 %2.90 %3.60 %3.28 %2.88 %3.59 %2.74 %2.22 %2.67 %
Rate of compensation increase4.29 %4.50 %4.22 %N/AN/AN/A3.17 %2.93 %3.00 %
Expected return on plan assets5.90 %6.50 %7.77 %4.77 %3.65 %7.20 %3.87 %3.68 %5.55 %
Cash balance interest credit rate2.50 %2.50 %2.50 %N/AN/AN/A2.94 %2.74 %2.59 %
The table below provides the weighted-average actuarial assumptions used to determine the benefit obligations of our plans:
 U.S. Pension BenefitsU.S. Postretirement
Medical Benefits		International
Pension Benefits
 202220212022202120222021
Discount rate5.79 %3.13 %6.06 %3.28 %4.63 %2.33 %
Rate of compensation increase3.25 %4.29 %N/AN/A3.20 %3.17 %
Cash balance interest credit rate4.21 %2.50 %N/AN/A3.69 %2.94 %
Reconciliation of the Changes in the Plans' Benefit Obligations and Fair Value of Plan Assets The following tables provide a reconciliation of the changes in the plans’ benefit obligations and fair value of plan assets as of the respective measurement dates in each year (in millions):
 U.S. Pension BenefitsU.S. Postretirement
Medical Benefits		International
Pension Benefits
 202220212022202120222021
Benefit Obligations:
Projected benefit obligation at beginning of year$61,378 $65,922 $2,592 $2,759 $2,106 $2,177 
Service cost2,024 1,897 30 28 68 76 
Interest cost1,950 1,948 83 81 45 38 
Gross benefits paid(2,151)(1,906)(268)(278)(45)(46)
Plan participants’ contributions— — 31 35 3 3 
Plan amendments145 66 — — — — 
Actuarial (gain)/loss(19,842)(6,390)(452)(26)(575)(111)
Foreign currency exchange rate changes— — — — (150)(32)
Curtailments and settlements— (159)— (7)(40)(3)
Other— — — — 4 4 
Projected benefit obligation at end of year$43,504 $61,378 $2,016 $2,592 $1,416 $2,106 
 U.S. Pension BenefitsU.S. Postretirement
Medical Benefits		International
Pension Benefits
 202220212022202120222021
Fair Value of Plan Assets:
Fair value of plan assets at beginning of year$55,954 $52,997 $115 $49 $2,106 $1,835 
Actual return on plan assets(13,657)4,706 (15)(8)(349)230 
Employer contributions1,912 157 352 317 78 102 
Plan participants’ contributions— — 31 35 3 3 
Gross benefits paid(2,151)(1,906)(268)(278)(45)(46)
Foreign currency exchange rate changes— — — — (144)(15)
Curtailments and settlements— — — — (6)(3)
Other— — — — — — 
Fair value of plan assets at end of year$42,058 $55,954 $215 $115 $1,643 $2,106 
Funded Status as of the Respective Measurement Dates in Each Year and the Amounts Recognized in Balance Sheet
The following table discloses the funded status of our plans and the amounts recognized in our consolidated balance sheets as of December 31 (in millions):
 U.S. Pension BenefitsU.S. Postretirement
Medical Benefits		International
Pension Benefits
 202220212022202120222021
Funded Status:
Fair value of plan assets$42,058 $55,954 $215 $115 $1,643 $2,106 
Benefit obligation(43,504)(61,378)(2,016)(2,592)(1,416)(2,106)
Funded status$(1,446)$(5,424)$(1,801)$(2,477)$227 $— 
Funded Status Recognized in our Balance Sheet:
Other non-current assets$1,408 $— $— $— $416 $295 
Other current liabilities(24)(24)(7)(118)(6)(7)
Pension and postretirement benefit obligations(2,830)(5,400)(1,794)(2,359)(183)(288)
Net asset (liability)$(1,446)$(5,424)$(1,801)$(2,477)$227 $— 
Amounts Recognized in AOCI(1):
Unrecognized net prior service cost$(734)$(682)$(3)$(3)$(8)$(9)
Unrecognized net actuarial gain (loss)80 (1,949)201 (232)115 107 
Gross unrecognized cost(654)(2,631)198 (235)107 98 
Deferred tax assets (liabilities)168 642 (48)55 (30)(27)
Net unrecognized cost$(486)$(1,989)$150 $(180)$77 $71 

(1) Accumulated Other Comprehensive Income
Projected Benefit Obligation, Accumulated Benefit Obligation, and Fair Value of Plan Assets for Pension Plans With an Accumulated Benefit Obligation in Excess of Plan Assets
As of December 31, 2022 and 2021, the projected benefit obligation, the accumulated benefit obligation and the fair value of plan assets for pension plans with benefit obligations in excess of plan assets were as follows (in millions):
 Projected Benefit Obligation
Exceeds the Fair Value of Plan Assets		Accumulated Benefit Obligation
Exceeds the Fair Value of Plan Assets
2022202120222021
U.S. Pension Benefits:
Projected benefit obligation$24,452 $61,378 $24,452 $61,378 
Accumulated benefit obligation24,414 60,769 24,414 60,769 
Fair value of plan assets21,598 55,954 21,598 55,954 
International Pension Benefits:
Projected benefit obligation$311 $798 $274 $408 
Accumulated benefit obligation278 696 246 357 
Fair value of plan assets121 503 86 132 
Fair Values of U.S. Pension and Postretirement Benefit Plan Assets by Asset Category as Well as the Percentage That Each Category Comprises of Total Plan Assets and the Respective Target Allocations
The fair values of U.S. and international pension and postretirement benefit plan assets by asset category, including derivative assets and liabilities, as of December 31, 2022 are presented below (in millions), as well as the percentage that each category comprises of our total plan assets and the respective target allocations:
Total
Assets(1)
Level 1Level 2Level 3Percentage of Plan AssetsTarget
Allocation
Asset Category (U.S. Plans):
Cash and cash equivalents$1,230 $870 $360 $— 2.9 %
1-7
Equity Securities:
U.S. Large Cap6,513 2,511 4,002 — 
U.S. Small Cap698 698 — — 
Emerging Markets1,542 1,171 371 — 
Global Equity1,168 1,168 — — 
International Equity3,610 1,663 1,947 — 
Total Equity Securities13,531 7,211 6,320 — 32.0 
20-45
Fixed Income Securities:
U.S. Government Securities(2)
7,865 14,628 (6,763)— 
Corporate Bonds6,145 7 6,138 — 
Global Bonds702 — 702 — 
Municipal Bonds6 — 6 — 
Total Fixed Income Securities14,718 14,635 83 — 34.8 
30-70
Other Investments:
Hedge Funds4,368 — 2,717 — 10.3 
3-13
Private Equity5,012 — — — 11.9 
3-15
Private Debt829 — — — 2.0 
1-15
Real Estate2,415 267 69 — 5.7 
3-15
Structured Products(3)
170 — 170 — 0.4 
0-5
Total U.S. Plan Assets$42,273 $22,983 $9,719 $— 100.0 %
Asset Category (International Plans):
Cash and cash equivalents$147 $70 $77 $— 8.9 %
1-10
Equity Securities:
Local Markets Equity138 — 138 — 
U.S. Equity(3)— (3)— 
Emerging Markets— — — — 
International / Global Equity298 36 262 — 
Total Equity Securities433 36 397 — 26.4 
20-50
Fixed Income Securities:
Local Government Bonds91 59 32 — 
Corporate Bonds494 — 494 — 
Global Bonds119 98 21 — 
Total Fixed Income Securities704 157 547 — 42.8 
35-55
Other Investments:
Real Estate95 — 48 25 5.8 
1-10
Other264 — 190 52 16.1 
1-30
Total International Plan Assets$1,643 $263 $1,259 $77 100.0 %
Total Plan Assets$43,916 $23,246 $10,978 $77 
(1) Certain investments 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 but are included in the category totals.
(2) Level 2 U.S. Government Securities includes repurchase and reverse repurchase agreements.
(3) Represents mortgage and asset-backed securities.
The fair values of U.S. and international pension and postretirement benefit plan assets by asset category, including derivative assets and liabilities, as of December 31, 2021 are presented below (in millions), as well as the percentage that each category comprises of our total plan assets and the respective target allocations:
Total
Assets(1)
Level 1Level 2Level 3Percentage of
Plan Assets 		Target
Allocation
Asset Category (U.S. Plans):
Cash and cash equivalents$2,671 $2,564 $107 $— 4.8 %
1-7
Equity Securities:
U.S. Large Cap12,840 8,948 3,892 — 
U.S. Small Cap484 484 — — 
Emerging Markets2,077 1,483 594 — 
Global Equity3,054 2,901 153 — 
International Equity4,199 1,972 2,227 — 
Total Equity Securities22,654 15,788 6,866 — 40.4 
20-45
Fixed Income Securities:
U.S. Government Securities(2)
12,083 25,358 (13,275)— 
Corporate Bonds6,156 — 6,142 14 
Global Bonds23 — 23 — 
Municipal Bonds19 — 19 — 
Total Fixed Income Securities18,281 25,358 (7,091)14 32.6 
30-70
Other Investments:
Hedge Funds4,121 — 2,303 — 7.3 
5-10
Private Equity4,822 — — — 8.6 
1-10
Private Debt763 — — — 1.4 
1-10
Real Estate2,285 313 106 — 4.1 
1-10
Structured Products(3)
177 — 177 — 0.3 
1-5
Risk Parity Funds295 — — — 0.5 
1-10
Total U.S. Plan Assets$56,069 $44,023 $2,468 $14 100.0 %
Asset Category (International Plans):
Cash and cash equivalents$184 $135 $49 $— 8.7 %
1-10
Equity Securities:
Local Markets Equity193 — 193 — 
U.S. Equity53 53 — — 
Emerging Markets35 35 — — 
International / Global Equity513 195 318 — 
Total Equity Securities794 283 511 — 37.7 
20-50
Fixed Income Securities:
Local Government Bonds61 — 61 — 
Corporate Bonds438 21 417 — 
Global Bonds136 134 2 — 
Total Fixed Income Securities635 155 480 — 30.2 
30-50
Other Investments:
Real Estate172 — 90 24 8.2 
5-10
Other321 — 247 50 15.2 
1-20
Total International Plan Assets$2,106 $573 $1,377 $74 100.0 %
Total Plan Assets$58,175 $44,596 $3,845 $88 
(1) Certain investments 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 but are included in the category totals.
(2) Level 2 U.S. Government Securities includes repurchase and reverse repurchase agreements.
(3) Represents mortgage and asset-backed securities.
Fair Value Measurement of Plan Assets Using Significant Unobservable Inputs (Level 3)
The following table presents the changes in the Level 3 instruments measured on a recurring basis for the years ended December 31, 2022 and 2021 (in millions):
Corporate BondsOtherTotal
Balance as of January 1, 2021$3 $62 $65 
Actual Return on Assets:
Assets Held at End of Year— 5 5 
Assets Sold During the Year(16)— (16)
Purchases33 10 43 
Sales(6)(3)(9)
Transfers Into (Out of) Level 3— — — 
Balance as of December 31, 2021$14 $74 $88 
Actual Return on Assets:
Assets Held at End of Year— (2)(2)
Assets Sold During the Year(35)— (35)
Purchases482 9 491 
Sales(460)(4)(464)
Transfers Into (Out of) Level 3(1)— (1)
Balance as of December 31, 2022$— $77 $77 
Expected Cash Flows for Pension and Postretirement Benefit Plans Information about expected cash flows for our pension and postretirement medical benefit plans is as follows (in millions):
U.S.
Pension Benefits		U.S. Postretirement
Medical Benefits		International Pension Benefits
Expected Employer Contributions:
2023 to plan trust$1,180 $72 $69 
2023 to plan participants25 46 7 
Expected Benefit Payments:
2023$2,062 $223 $45 
20242,193 212 50 
20252,328 203 56 
20262,464 194 62 
20272,599 186 69 
2028 - 203214,834 797 437 
schedule of one basis point change in discount rate on the projected benefit obligation [Table Text Block]
As of December 31, 2022, the impact of each basis point change in the discount rate on the projected benefit obligation of our pension and postretirement medical benefit plans is as follows (in millions):
 Increase (Decrease) in the Projected Benefit Obligation
 Pension BenefitsPostretirement Medical Benefits
One basis point increase in discount rate$(55)$(1)
One basis point decrease in discount rate$59 $2