Commitments and Contingent Liabilities Litigation (Details)	3 Months Ended		12 Months Ended	60 Months Ended	87 Months Ended
	Mar. 31, 2019 USD ($) lawsuits	Mar. 31, 2018 USD ($)	Dec. 31, 2004 USD ($)	Jul. 06, 2022	Mar. 31, 2019 USD ($) lawsuits	Jan. 01, 2012
PFOA Matters
Loss Contingencies [Line Items]
Accrual balance	$ 22,000,000				$ 22,000,000
PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Binding Settlement Agreement Class Size			80,000
Loss Contingency, Number Of Water Districts Receiving Water Treatment						6
Litigation Settlement, Liability For Medical Monitoring Program, Threshold			$ 235,000,000
Litigation Settlement, Medical Monitoring Program, Escrow Account, Disbursements To Date					2,000,000
Escrow Account Balance	$ 1,000,000				$ 1,000,000
Loss Contingency, Pending Claims, Number	57				57
PFOA Matters: Multi-District Litigation [Member]
Loss Contingencies [Line Items]
Disease Categories for MDL	6				6
Lawsuits alleging personal injury filed | lawsuits	3,550				3,550
Litigation Settlement, Amount Awarded to Other Party		$ 670,700,000
Loss Contingency, Limited Sharing of Potential Future Liabilities, Period				5 years
Additional annual PFOA liabilities for the next five years paid by DuPont	$ 25,000,000				$ 25,000,000
NEW YORK | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	52				52
NEW JERSEY | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	2				2
ALABAMA | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	1				1
OHIO | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	3				3
NORTH CAROLINA | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Number of Additional Plaintiffs	100
Chemours [Member] | PFOA Matters
Loss Contingencies [Line Items]
Indemnification Assets	$ 22,000,000				$ 22,000,000
Chemours [Member] | PFOA Matters: Multi-District Litigation [Member]
Loss Contingencies [Line Items]
Additional annual PFOA liabilities for the next five years paid by Chemours	$ 25,000,000				$ 25,000,000
Not part of MDL or filed on behalf of Leach class members [Member] | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	3				3
Brought by NJAG [Member] | NEW JERSEY | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	4				4
Firefighting Foam Cases [Member] | PFOA Matters: Drinking Water Actions [Member]
Loss Contingencies [Line Items]
Loss Contingency, Pending Claims, Number	4				4