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Pension Plans and Other Post Employment Benefit Plans (Tables)
 12 Months Ended
Dec. 31, 2023
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, 2023December 31, 2022
Discount rate
4.97 %5.17 %
Rate of increase in future compensation levels1
2.87 %2.83 %
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,
202320222021
Discount rate
5.17 %3.33 %2.44 %
Rate of increase in future compensation levels1
2.83 %2.55 %2.54 %
Expected long-term rate of return on plan assets
4.55 %4.51 %5.73 %
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, 2023December 31, 2022
Discount rate
4.92 %5.09 %

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,
202320222021
Discount rate
5.09 %2.59 %2.09 %
As of December 31, 2023, 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.
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,
2023202220232022
Change in benefit obligations:
Benefit obligation at beginning of the period$13,982 $19,775 $1,021 $1,362 
Service cost18 20 1 1 
Interest cost690 505 49 26 
Plan participants' contributions1 1 20 20 
Actuarial (gain) loss311 (3,759)(49)(246)
Benefits paid(1,304)(1,460)(117)(142)
Other1
(257)(1,080)— — 
Effect of foreign exchange rates(1)(20)— — 
Benefit obligations at end of the period$13,440 $13,982 $925 $1,021 
Change in plan assets:
Fair value of plan assets at beginning of the period$12,584 $17,827 $— $— 
Actual return on plan assets661 (2,765)— — 
Employer contributions52 60 97 122 
Plan participants' contributions1 1 20 20 
Benefits paid(1,304)(1,460)(117)(142)
Other1
(257)(1,080)— — 
Effect of foreign exchange rates18 1 — — 
Fair value of plan assets at end of the period$11,755 $12,584 $— $— 
Funded status    
U.S. plan with plan assets$(1,336)$(1,050)$— $— 
Non-U.S. plans with plan assets(43)(30)— — 
All other plans 2,3
(306)(318)(925)(1,021)
Funded status at end of the period$(1,685)$(1,398)$(925)$(1,021)
1.Primarily 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, 2023 and 2022, $155 million and $182 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, 2023December 31, 2022December 31, 2023December 31, 2022
Amounts recognized in the Consolidated Balance Sheets:
Other assets$2 $3 $— $— 
Accrued and other current liabilities(31)(35)(114)(132)
Pension and other post-employment benefits - noncurrent (1,656)(1,366)(811)(889)
Net amount recognized$(1,685)$(1,398)$(925)$(1,021)
Pretax amounts recognized in accumulated other comprehensive income (loss):
Net gain (loss)$(487)$(238)$238 $198 
Prior service benefit (cost)22 23 14 16 
Pretax balance in accumulated other comprehensive income (loss) at end of year$(465)$(215)$252$214
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, 2023December 31, 2022
(In millions)
Projected benefit obligations$13,262 $13,832 
Fair value of plan assets11,575 12,430 
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, 2023December 31, 2022
(In millions)
Accumulated benefit obligations$13,155 $13,676 
Fair value of plan assets11,488 12,290 
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)202320222021202320222021
Net Periodic Benefit (Credit) Cost:
Service cost$18 $20 $25 $1 $1 $1 
Interest cost690 505 364 49 26 21 
Expected return on plan assets(605)(720)(915)— — — 
Amortization of unrecognized loss (gain)— 3 55 (10)2 81 
Amortization of prior service (benefit) cost(3)(3)(2)(2)(1)(922)
Curtailment (gain) loss— — — — — (1)
Settlement loss— 25 1 — — — 
Net periodic benefit (credit) cost - Total$100 $(170)$(472)$38 $28 $(820)
Changes in plan assets and benefit obligations recognized in other comprehensive income (loss):
Net gain (loss)$(255)$274 $1,284 $49 $246 $33 
Amortization of unrecognized (gain) loss— 3 55 (10)2 81 
Prior service benefit (cost)— — 15 — — — 
Amortization of prior service (benefit) cost(3)(3)(2)(2)(1)(922)
Curtailment (gain) loss— — — — — (1)
Settlement loss— 25 1 — — — 
Effect of foreign exchange rates8 2 3 1 — — 
Total benefit (loss) recognized in other comprehensive income (loss), attributable to Corteva$(250)$301 $1,356 $38 $247 $(809)
Total recognized in net periodic benefit (credit) cost and other comprehensive income (loss)$(350)$471 $1,828 $— $219 $11 
Schedule of Expected Benefit Payments [Table Text Block]
Estimated Future Benefit Payments at December 31, 2023Defined Benefit Pension PlansOther Post-Employment Benefits
(In millions)
2024$1,251 $113 
20251,214 106 
20261,182 99 
20271,149 93 
20281,112 86 
Years 2029-20334,994 344 
Total$10,902 $841 
Schedule of Allocation of Plan Assets [Table Text Block]
Target Allocation for Plan AssetsDecember 31, 2023December 31, 2022
Asset Category
U.S. equity securities9 %8 %
Non-U.S. equity securities5 7 
Fixed income securities64 64 
Hedge funds2 3 
Private market securities11 11 
Real estate7 6 
Cash and cash equivalents2 1 
Total 100 %100 %
Basis of Fair Value MeasurementsTotalLevel 1Level 2Level 3
For the year ended December 31, 2023
(In millions)
Cash and cash equivalents$1,148 $1,148 $— $— 
U.S. equity securities 1
1,108 1,106 1 1 
Non-U.S. equity securities441 439 — 2 
Debt – government-issued1,601 — 1,601 — 
Debt – corporate-issued3,908 — 3,906 2 
Debt – asset-backed637 — 637 — 
Hedge funds5 — 2 3 
Private market securities6 — — 6 
Real estate funds52 — — 52 
Other55 — — 55 
     Subtotal $8,961 $2,693 $6,147 $121 
Investments measured at net asset value
     Debt - government issued42 
     Debt - corporate-issued3 
     U.S. equity securities19 
     Non-U.S. equity securities21 
     Hedge funds143 
     Private market securities1,928 
     Real estate funds768 
Total investments measured at net asset value$2,924 
Other items to reconcile to fair value of plan assets
     Pension trust receivables 2
315    
     Pension trust payables 3
(445)   
Total$11,755    
1.The Corteva pension plans directly held $204 million (approximately 2 percent of total plan assets) of Corteva, Inc. common stock at December 31, 2023.
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, 2022
(In millions)TotalLevel 1Level 2Level 3
Cash and cash equivalents$1,348 $1,348 $— $— 
U.S. equity securities1
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 receivables2
161 
     Pension trust payables3
(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.
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]
Fair Value Measurement of
Level 3 Pension Plan Assets		U.S. equity securitiesNon-U.S. equity securitiesDebt – corporate-issuedHedge fundsPrivate market securitiesReal estateOtherTotal
(In millions)
Balance at January 1, 2022$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 
Actual return on assets:
Relating to assets sold during the year ended December 31, 2023(1)(9)— — — — — (10)
Relating to assets held at December 31, 2023— 10 (5)— 2 (24)4 (13)
Purchases, sales and settlements, net(1)1 7 — — (35)(13)(41)
Transfers in or out of Level 3, net— — — — — (21)2 (19)
Balance at December 31, 2023$1 $2 $2 $3 $6 $52 $55 $121