Summary of Significant Accounting Policies Summary of Accounting Policies (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Foreign Exchange Impact on Income (Loss) from Continuing Operations	$ 20
Percentage deterioration of the official Peso to USD exchange rate	10.00%
Internal Reorganization [Member]
Reclassification of Divisional Equity to APIC		$ 40

Increase of deterioration in the official Peso to USD exchange rate which would cause a reduction in net monetary assets and negatively impact pre-tax earnings.

No definition available.

Name:	dd_PercentageDeteriorationOfTheOfficialPesoToUSDExchangeRate
Namespace Prefix:	dd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant