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Pension Plans and Other Post Employment Benefit Plans Summary of Fair Value Measurement of Level 3 Pension Plan Assets (Details) - Pension Plan - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | $ 10,630 |  | $ 11,755 |  | $ 12,584
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 162 |  | 121 |  | 204
Actual Return (Loss) on Plan Assets Sold | (11) |  | (10) |  |
Actual Return (Loss) on Plan Assets Still Held | (57) |  | (13) |  |
Purchases, Sales, and Settlements | (5) |  | (41) |  |
Assets Transferred into (out of) Level 3 | 114 |  | (19) |  |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 0 |  | 2 |  | 0
Actual Return (Loss) on Plan Assets Sold | (14) |  | 0 |  |
Actual Return (Loss) on Plan Assets Still Held | 14 |  | (5) |  |
Purchases, Sales, and Settlements | 0 |  | 7 |  |
Assets Transferred into (out of) Level 3 | (2) |  | 0 |  |
Asset-backed Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 0 |  | 0 |  |
Hedge Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 3 |  | 3 |  | 3
Actual Return (Loss) on Plan Assets Sold | 0 |  | 0 |  |
Actual Return (Loss) on Plan Assets Still Held | 0 |  | 0 |  |
Purchases, Sales, and Settlements | 0 |  | 0 |  |
Assets Transferred into (out of) Level 3 | 0 |  | 0 |  |
Private Market Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 3 |  | 6 |  | 4
Actual Return (Loss) on Plan Assets Sold | 0 |  | 0 |  |
Actual Return (Loss) on Plan Assets Still Held | (3) |  | 2 |  |
Purchases, Sales, and Settlements | 0 |  | 0 |  |
Assets Transferred into (out of) Level 3 | 0 |  | 0 |  |
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 101 |  | 52 |  | 132
Actual Return (Loss) on Plan Assets Sold | 0 |  | 0 |  |
Actual Return (Loss) on Plan Assets Still Held | (68) |  | (24) |  |
Purchases, Sales, and Settlements | 1 |  | (35) |  |
Assets Transferred into (out of) Level 3 | 116 |  | (21) |  |
Derivative, Asset [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 51 |  | 55 |  | 62
Actual Return (Loss) on Plan Assets Sold | 0 |  | 0 |  |
Actual Return (Loss) on Plan Assets Still Held | (2) |  | 4 |  |
Purchases, Sales, and Settlements | (2) |  | (13) |  |
Assets Transferred into (out of) Level 3 | 0 |  | 2 |  |
Defined Benefit Plan, Equity Securities, US | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 3 | [1] | 1 | [2] | 3
Actual Return (Loss) on Plan Assets Sold | 0 |  | (1) |  |
Actual Return (Loss) on Plan Assets Still Held | 2 |  | 0 |  |
Purchases, Sales, and Settlements | 0 |  | (1) |  |
Assets Transferred into (out of) Level 3 | 0 |  | 0 |  |
Defined Benefit Plan, Equity Securities, Non-US | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Fair value of plan assets | 1 |  | 2 |  | $ 0
Actual Return (Loss) on Plan Assets Sold | 3 |  | (9) |  |
Actual Return (Loss) on Plan Assets Still Held | 0 |  | 10 |  |
Purchases, Sales, and Settlements | (4) |  | 1 |  |
Assets Transferred into (out of) Level 3 | $ 0 |  | $ 0 |  |
[1] | The Corteva pension plans directly held $132 million (approximately 1 percent of total plan assets) of Corteva, Inc. common stock at December 31, 2024.
[2] | The Corteva pension plans directly held $204 million (approximately 2 percent of total plan assets) of Corteva, Inc. common stock at December 31, 2023.

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