Restructuring and Asset Related Charges Execute to Win Productivity Program (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Asset Related Charges - Net	$ 70	$ 61
Execute to Win Productivity Program [Domain]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	185
Restructuring Reserve, Beginning Balance	0
Restructuring and Asset Related Charges - Net	63
Asset write-offs and adjustments	(15)
Asset Retirement Obligation	27
Restructuring Reserve, Ending Balance	48
Execute to Win Productivity Program [Domain] \| Severance and Related Benefit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	60
Future Cash Payments	90
Restructuring Reserve, Beginning Balance	0
Restructuring and Asset Related Charges - Net	42
Asset write-offs and adjustments	0
Restructuring Reserve, Ending Balance	42
Execute to Win Productivity Program [Domain] \| Asset Related Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	125
Restructuring Reserve, Beginning Balance	0
Restructuring and Asset Related Charges - Net	21
Asset write-offs and adjustments	(15)
Restructuring Reserve, Ending Balance	6
Execute to Win Productivity Program [Domain] \| Asset Retirement Obligation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	30
Execute to Win Productivity Program [Domain] \| Seed [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	15
Restructuring and Asset Related Charges - Net	3
Execute to Win Productivity Program [Domain] \| Crop Protection [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	110
Restructuring and Asset Related Charges - Net	18
Execute to Win Productivity Program [Domain] \| Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	60
Restructuring and Asset Related Charges - Net	$ 42
Minimum [Member] \| Execute to Win Productivity Program [Domain]
Restructuring Cost and Reserve [Line Items]
Ceased Operations	12 months
Maximum [Member] \| Execute to Win Productivity Program [Domain]
Restructuring Cost and Reserve [Line Items]
Ceased Operations	24 months

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Amount of time, from operations being ceased, that lease agreement requires assets to be removed.

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Amount expected to be recognized in earnings for the specified restructuring cost.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of restructuring charges, remediation cost, and asset impairment loss.

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