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.