Pension Plans and Other Post Employment Benefit Plans Basis of Fair Value Measurement (Details) - USD ($) $ in Millions		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 11,755		$ 12,584		$ 17,827
Fair Value of Plan Assets, Excluding Trust Receivables and payables and assets measured at NAV		8,961
Pension Plan | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2,693		3,349
Pension Plan | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		6,147		6,190
Pension Plan | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		121		204		110
Pension Plan | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				3,085
Pension Plan | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				9,743
Pension Plan | Defined Benefit Plan, Cash
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1,148
Pension Plan | Defined Benefit Plan, Cash | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1,148		1,348
Pension Plan | Defined Benefit Plan, Cash | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Defined Benefit Plan, Cash | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Defined Benefit Plan, Cash | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				1,348
Pension Plan | Defined Benefit Plan, Equity Securities, US
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[1]	1,108
Pension Plan | Defined Benefit Plan, Equity Securities, US | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1,106	[1]	1,195	[2]
Pension Plan | Defined Benefit Plan, Equity Securities, US | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1	[1]	2	[2]
Pension Plan | Defined Benefit Plan, Equity Securities, US | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1	[1]	3	[2]	4
Pension Plan | Defined Benefit Plan, Equity Securities, US | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		19		20
Pension Plan | Defined Benefit Plan, Equity Securities, US | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[2]			1,200
Pension Plan | Defined Benefit Plan, Equity Securities, Non-US
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		441
Pension Plan | Defined Benefit Plan, Equity Securities, Non-US | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		439		806
Pension Plan | Defined Benefit Plan, Equity Securities, Non-US | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Defined Benefit Plan, Equity Securities, Non-US | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2		0		0
Pension Plan | Defined Benefit Plan, Equity Securities, Non-US | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		21		20
Pension Plan | Defined Benefit Plan, Equity Securities, Non-US | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				806
Pension Plan | US Treasury and Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1,601
Pension Plan | US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1,601		1,669
Pension Plan | US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | US Treasury and Government [Member] | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		42		35
Pension Plan | US Treasury and Government [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				1,669
Pension Plan | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		3,908
Pension Plan | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		3,906		3,822
Pension Plan | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2		0		2
Pension Plan | Corporate Debt Securities [Member] | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		3		3
Pension Plan | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				3,822
Pension Plan | Asset-backed Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		637
Pension Plan | Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		637		695
Pension Plan | Asset-backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Asset-backed Securities [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				695
Pension Plan | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		5
Pension Plan | Hedge Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Hedge Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2		0
Pension Plan | Hedge Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		3		3		0
Pension Plan | Hedge Funds [Member] | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		143		347
Pension Plan | Hedge Funds [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				3
Pension Plan | Private Market Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		6
Pension Plan | Private Market Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Private Market Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Private Market Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		6		4		3
Pension Plan | Private Market Securities [Member] | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		1,928		1,991
Pension Plan | Private Market Securities [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				4
Pension Plan | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		52
Pension Plan | Real Estate [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Real Estate [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0		0
Pension Plan | Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		52		132		26
Pension Plan | Real Estate [Member] | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		768		669
Pension Plan | Real Estate [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				132
Pension Plan | Derivative, Asset [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				0
Pension Plan | Derivative, Asset [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				2
Pension Plan | Derivative, Asset [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				0
Pension Plan | Derivative, Asset [Member] | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				2
Pension Plan | Other Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		55
Pension Plan | Other Investments [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Pension Plan | Other Investments [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0
Pension Plan | Other Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		55
Pension Plan | Other Contract | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				0
Pension Plan | Other Contract | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				0
Pension Plan | Other Contract | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		55		62		$ 75
Pension Plan | Other Contract | Fair Value, Inputs, Level 1, Level 2, and Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				62
Pension Plan | Pension trust receivables
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[3]	315
Pension Plan | Pension trust receivables | Fair Value, Inputs, Level 1, Level 2, and Level 3 | Other Reconciling Items
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[4]			161
Pension Plan | Pension trust payables
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[5]	(445)
Pension Plan | Pension trust payables | Fair Value, Inputs, Level 1, Level 2, and Level 3 | Other Reconciling Items
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[6]			$ (405)
Pension Plan | Plan Assets Total Investments Measured At NAV | Fair Value Measured at Net Asset Value Per Share
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 2,924
Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Amount of Employer and Related Party Securities Included in Plan Assets, Percent		2.00%
Common Stock [Member] | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Amount of Employer and Related Party Securities Included in Plan Assets, Percent				2.00%
Common Stock [Member] | Pension Plan | Defined Benefit Plan, Equity Securities, US
Defined Benefit Plan Disclosure [Line Items]
Amount of Employer and Related Party Securities Included in Plan Assets		$ 204		$ 250

[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] The Corteva pension plans directly held $250 million (approximately 2 percent of total plan assets) of Corteva, Inc. common stock at December 31, 2022.

[3] Primarily receivables for investments securities sold.

[4] Primarily receivables for investments securities sold.

[5] Primarily payables for investment securities purchased.

[6] Primarily payables for investment securities purchased.