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Pension Plans and Other Post Employment Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2022
Retirement Benefits [Abstract]  
Defined Benefit Plan, Assumptions [Table Text Block]
The weighted-average assumptions used to determine pension plan obligations for all pension plans are summarized in the table below:
Weighted-Average Assumptions used to Determine Benefit ObligationsDecember 31, 2022December 31, 2021
Discount rate
5.17 %2.82 %
Rate of increase in future compensation levels1
2.83 %2.55 %
1.The rate of compensation increase excludes U.S. pension plans since the employees who participate in the U.S. pension plans no longer accrue additional benefits for future service and eligible compensation.

The weighted-average assumptions used to determine net periodic benefit costs for all pension plans are summarized in the table below:
Weighted-Average Assumptions used to Determine Net Periodic Benefit CostFor the Year Ended December 31,
202220212020
Discount rate
3.33 %2.44 %3.19 %
Rate of increase in future compensation levels1
2.55 %2.54 %2.60 %
Expected long-term rate of return on plan assets
4.51 %5.73 %6.25 %
1.The rate of compensation increase excludes U.S. pension plans since the employees who participate in the U.S. pension plans no longer accrue additional benefits for future service and eligible compensation.
The weighted-average assumptions used to determine benefit obligations for OPEB plans are summarized in the table below:
Weighted-Average Assumptions used to Determine Benefit ObligationsDecember 31, 2022December 31, 2021
Discount rate
5.09 %2.59 %

The weighted-average assumptions used to determine net periodic benefit costs for the OPEB plans are summarized in the table below:
Weighted-Average Assumptions used to Determine Net Periodic Benefit CostFor the Year Ended December 31,
202220212020
Discount rate
2.59 %2.09 %3.07 %

As of December 31, 2022 and 2021, health care cost trend rates do not impact the benefit obligations for the OPEB plans because of the 2020 OPEB Plan Amendments. For the year ended December 31, 2020, the health care cost trend rate was assumed to be 7.0 percent for next year.
Schedule of Pension Plans and Other Postemployment Benefits [Table Text Block]
Summarized information on the company's pension and other post employment benefit plans is as follows:
Change in Projected Benefit Obligations, Plan Assets and Funded Status
Defined Benefit Pension PlansOther Post Employment Benefits
(In millions)For the Year Ended December 31,For the Year Ended December 31,
20222021 2022 2021
Change in benefit obligations:
Benefit obligation at beginning of the period$19,775 $21,682 $1,362 $1,571 
Service cost20 25 1 1 
Interest cost505 364 26 21 
Plan participants' contributions1 3 20 35 
Actuarial (gain) loss(3,759)(524)(246)(33)
Benefits paid(1,460)(1,490)(142)(233)
Plan amendments— (15)— — 
Other1
(1,080)(240)— — 
Effect of foreign exchange rates(20)(30)— — 
Benefit obligations at end of the period$13,982 $19,775 $1,021 $1,362 
Change in plan assets:
Fair value of plan assets at beginning of the period$17,827 $17,835 $— $— 
Actual return on plan assets(2,765)1,685 — — 
Employer contributions60 49 122 198 
Plan participants' contributions1 3 20 35 
Benefits paid(1,460)(1,490)(142)(233)
Other1
(1,080)(240)— — 
Effect of foreign exchange rates1 (15)— — 
Fair value of plan assets at end of the period$12,584 $17,827 $— $— 
Funded status    
U.S. plan with plan assets$(1,050)$(1,471)$— $— 
Non-U.S. plans with plan assets(30)(62)— — 
All other plans 2,3
(318)(415)(1,021)(1,362)
Funded status at end of the period$(1,398)$(1,948)$(1,021)$(1,362)
1.Relates to transfers of certain benefit obligations and related assets associated with the principal U.S. pension plan to an insurance company through the purchase of nonparticipating group annuity contracts.
2.As of December 31, 2022 and 2021, $182 million and $219 million, respectively, of the benefit obligations are supported by funding under the Trust agreement, defined in the "Trust Assets" section below.
3.Includes pension plans maintained around the world where funding is not customary.
Defined Benefit Pension PlansOther Post Employment Benefits
(In millions)December 31, 2022December 31, 2021December 31, 2022December 31, 2021
Amounts recognized in the Consolidated Balance Sheets:
Other assets$3 $4 $— $— 
Accrued and other current liabilities(35)(46)(132)(144)
Pension and other post employment benefits - noncurrent (1,366)(1,906)(889)(1,218)
Net amount recognized$(1,398)$(1,948)$(1,021)$(1,362)
Pretax amounts recognized in accumulated other comprehensive income (loss):
Net gain (loss)$(238)$(543)$198 $(50)
Prior service benefit (cost)23 27 16 17 
Pretax balance in accumulated other comprehensive income (loss) at end of year$(215)$(516)$214$(33)
Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]
Pension Plans with Projected Benefit Obligations in Excess of Plan AssetsDecember 31, 2022December 31, 2021
(In millions)
Projected benefit obligations$13,832 $19,519 
Fair value of plan assets12,430 17,567 
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]
Pension Plans with Accumulated Benefit Obligations in Excess of Plan AssetsDecember 31, 2022December 31, 2021
(In millions)
Accumulated benefit obligations$13,676 $19,501 
Fair value of plan assets12,290 17,567 
Schedule of Net Benefit Costs [Table Text Block]
(In millions)Defined Benefit Pension PlansOther Post Employment Benefits
For the Year Ended December 31,For the Year Ended December 31,
Components of net periodic benefit (credit) cost and amounts recognized in other comprehensive income (loss)202220212020202220212020
Net Periodic Benefit (Credit) Cost:
Service cost$20 $25 $26 $1 $1 $2 
Interest cost505 364 559 26 21 66 
Expected return on plan assets(720)(915)(1,000)— — — 
Amortization of unrecognized loss (gain)3 55 4 2 81 1 
Amortization of prior service (benefit) cost(3)(2)(1)(1)(922)— 
Curtailment (gain) loss— — — — (1)— 
Settlement loss25 1 3 — — — 
Net periodic benefit (credit) cost - Total$(170)$(472)$(409)$28 $(820)$69 
Changes in plan assets and benefit obligations recognized in other comprehensive income (loss):
Net gain (loss)$274 $1,284 $(247)$246 $33 $(59)
Amortization of unrecognized (gain) loss3 55 4 2 81 1 
Prior service benefit (cost)— 15 3 — — 939 
Amortization of prior service (benefit) cost(3)(2)(1)(1)(922)— 
Curtailment (gain) loss— — — — (1)— 
Settlement loss25 1 3 — — — 
Effect of foreign exchange rates2 3 (2)— — 1 
Total benefit (loss) recognized in other comprehensive income (loss), attributable to Corteva$301 $1,356 $(240)$247 $(809)$882 
Total recognized in net periodic benefit (credit) cost and other comprehensive income (loss)$471 $1,828 $169 $219 $11 $813 
Schedule of Expected Benefit Payments [Table Text Block]
Estimated Future Benefit Payments at December 31, 2022Defined Benefit Pension PlansOther Post Employment Benefits
(In millions)
2023$1,305 $132 
20241,267 123 
20251,233 116 
20261,201 109 
20271,165 102 
Years 2028-20325,233 355 
Total$11,404 $937 
Schedule of Allocation of Plan Assets [Table Text Block]
Target Allocation for Plan AssetsDecember 31, 2022December 31, 2021
Asset Category
U.S. equity securities8 %11 %
Non-U.S. equity securities7 11 
Fixed income securities64 58 
Hedge funds3 2 
Private market securities11 8 
Real estate6 5 
Cash and cash equivalents1 5 
Total 100 %100 %
Basis of Fair Value MeasurementsTotalLevel 1Level 2Level 3
For the year ended December 31, 2022
(In millions)
Cash and cash equivalents$1,348 $1,348 $— $— 
U.S. equity securities 1
1,200 1,195 2 3 
Non-U.S. equity securities806 806 — — 
Debt – government-issued1,669 — 1,669 — 
Debt – corporate-issued3,822 — 3,822 — 
Debt – asset-backed695 — 695 — 
Hedge funds3 — — 3 
Private market securities4 — — 4 
Real estate funds132 — — 132 
Derivatives – asset position2 — 2 — 
Other62 — — 62 
     Subtotal $9,743 $3,349 $6,190 $204 
Investments measured at net asset value
     Debt - government issued35 
     Debt - corporate-issued3 
     U.S. equity securities20 
     Non-U.S. equity securities20 
     Hedge funds347 
     Private market securities1,991 
     Real estate funds669 
Total investments measured at net asset value$3,085 
Other items to reconcile to fair value of plan assets
     Pension trust receivables 2
161    
     Pension trust payables 3
(405)   
Total$12,584    
1.The Corteva pension plans directly held $250 million (approximately 2 percent of total plan assets) of Corteva, Inc. common stock at December 31, 2022.
2.Primarily receivables for investments securities sold.
3.Primarily payables for investment securities purchased.
Basis of Fair Value Measurements
For the year ended December 31, 2021
(In millions)TotalLevel 1Level 2Level 3
Cash and cash equivalents$2,543 $2,543 $— $— 
U.S. equity securities1
2,400 2,394 2 4 
Non-U.S. equity securities1,523 1,523 — — 
Debt – government-issued3,271 — 3,271 — 
Debt – corporate-issued4,591 — 4,589 2 
Debt – asset-backed682 — 682 — 
Private market securities3 — — 3 
Real estate funds26 — — 26 
Other78 — 3 75 
     Subtotal $15,117 $6,460 $8,547 $110 
Investments measured at net asset value
     Debt - government issued37 
     Debt - corporate-issued7 
     U.S. equity securities33 
     Non-U.S. equity securities34 
     Hedge funds394 
     Private market securities1,822 
     Real estate funds759 
Total investments measured at net asset value$3,086 
Other items to reconcile to fair value of plan assets
     Pension trust receivables2
655 
     Pension trust payables3
(1,031)   
Total$17,827    
1.The Corteva pension plans directly held $201 million (approximately 1 percent of total plan assets) of Corteva, Inc. common stock at December 31, 2021.
2.Primarily receivables for investments securities sold.
3.Primarily payables for investment securities purchased.
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]
Fair Value Measurement of Level 3 Pension Plan AssetsU.S. equity securitiesNon-U.S. equity securitiesDebt – corporate-issuedHedge fundsPrivate market securitiesReal estateOtherTotal
(In millions)
Balance at January 1, 2021$5 $3 $3 $— $3 $28 $73 $115 
Actual return on assets:
Relating to assets sold during the year ended December 31, 20211 (1)(5)— — — — (5)
Relating to assets held at December 31, 2021(3)(1)6 — — (2)(2)(2)
Purchases, sales and settlements, net1 (1)(2)— — — 4 2 
Balance at December 31, 2021$4 $— $2 $— $3 $26 $75 $110 
Actual return on assets:
Relating to assets sold during the year ended December 31, 20221 — (15)— (9)— — (23)
Relating to assets held at December 31, 2022— (13)13 (8)10 8 (1)9 
Purchases, sales and settlements, net(2)1 — — — (1)(12)(14)
Transfers in or out of Level 3, net— 12 — 11 — 99 — 122 
Balance at December 31, 2022$3 $— $— $3 $4 $132 $62 $204