EID - Basis of Presentation (Notes)	9 Months Ended
Sep. 30, 2020
EID [Member]
Entity Information [Line Items]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	BASIS OF PRESENTATION As a result of the Business Realignment and the Internal Reorganization, Corteva, Inc. owns 100% of the outstanding common stock of EID. EID is a subsidiary of Corteva, Inc. and continues to be a reporting company, subject to the requirements of the Exchange Act. The primary differences between Corteva, Inc. and EID are outlined below: •Preferred Stock - EID has preferred stock outstanding to third parties which is accounted for as a non-controlling interest at the Corteva, Inc. level. Each share of EID Preferred Stock - $4.50 Series and EID Preferred Stock - $3.50 Series issued and outstanding at the effective date of the Corteva Distribution remains issued and outstanding as to EID and was unaffected by the Corteva Distribution. •Related Party Loan - EID engaged in a series of debt redemptions during the second quarter of 2019 that were partially funded through an intercompany loan from Corteva, Inc. This was eliminated in consolidation at the Corteva, Inc. level but remains on EID's financial statements at the standalone level (including the associated interest). •Capital Structure - At September 30, 2020, Corteva, Inc.'s capital structure consists of 747,492,000 issued shares of common stock, par value $0.01 per share. The accompanying footnotes relate to EID only, and not to Corteva, Inc., and are presented to show differences between EID and Corteva, Inc. For the footnotes listed below, refer to the following Corteva, Inc. footnotes: •Note 1 - Summary of Significant Accounting Policies - refer to page 10 of the Corteva, Inc. interim Consolidated Financial Statements •Note 2 - Recent Accounting Guidance - refer to page 11 of the Corteva, Inc. interim Consolidated Financial Statements •Note 3 - Divestitures and Other Transactions - refer to page 12 of the Corteva, Inc. interim Consolidated Financial Statements •Note 4 - Revenue - refer to page 15 of the Corteva, Inc. interim Consolidated Financial Statements •Note 5 - Restructuring and Asset Related Charges - Net - refer to page 17 of the Corteva, Inc. interim Consolidated Financial Statements •Note 6 - Related Parties - Differences exist between Corteva, Inc. and EID; refer to EID Note 2 - Related Party Transactions, below •Note 7 - Supplementary Information - refer to page 19 of the Corteva, Inc. interim Consolidated Financial Statements •Note 8 - Income Taxes - refer to page 21 of the Corteva, Inc. interim Consolidated Financial Statements •Note 9 - Earnings Per Share of Common Stock - Not applicable for EID •Note 10 - Accounts and Notes Receivable - Net - refer to page 23 of the Corteva, Inc. interim Consolidated Financial Statements •Note 11 - Inventories - refer to page 24 of the Corteva, Inc. interim Consolidated Financial Statements •Note 12 - Other Intangible Assets - refer to page 24 of the Corteva, Inc. interim Consolidated Financial Statements •Note 13 - Short-Term Borrowings, Long-Term Debt and Available Credit Facilities - refer to page 25 of the Corteva, Inc. interim Consolidated Financial Statements. In addition, EID has a related party loan payable to Corteva, Inc.; refer to EID Note 2 - Related Party Transactions, below •Note 14 - Commitments and Contingent Liabilities - refer to page 26 of the Corteva, Inc. interim Consolidated Financial Statements •Note 15 - Stockholders' Equity - refer to page 32 of the Corteva, Inc. interim Consolidated Financial Statements •Note 16 - Pension Plans and Other Post Employment Benefits - refer to page 35 of the Corteva, Inc. interim Consolidated Financial Statements •Note 17 - Financial Instruments - refer to page 36 of the Corteva, Inc. interim Consolidated Financial Statements •Note 18 - Fair Value Measurements - refer to page 41 of the Corteva, Inc. interim Consolidated Financial Statements •Note 19 - Segment Information - Differences exist between Corteva, Inc. and EID; refer to EID Note 3 - Segment Information, below

As a result of the Business Realignment and the Internal Reorganization, Corteva, Inc. owns 100% of the outstanding common stock of EID. EID is a subsidiary of Corteva, Inc. and continues to be a reporting company, subject to the requirements of the Exchange Act. The primary differences between Corteva, Inc. and EID are outlined below:

•Preferred Stock - EID has preferred stock outstanding to third parties which is accounted for as a non-controlling interest at the Corteva, Inc. level. Each share of EID Preferred Stock - $4.50 Series and EID Preferred Stock - $3.50 Series issued and outstanding at the effective date of the Corteva Distribution remains issued and outstanding as to EID and was unaffected by the Corteva Distribution.

•Related Party Loan - EID engaged in a series of debt redemptions during the second quarter of 2019 that were partially funded through an intercompany loan from Corteva, Inc. This was eliminated in consolidation at the Corteva, Inc. level but remains on EID's financial statements at the standalone level (including the associated interest).

•Capital Structure - At September 30, 2020, Corteva, Inc.'s capital structure consists of 747,492,000 issued shares of common stock, par value $0.01 per share.

The accompanying footnotes relate to EID only, and not to Corteva, Inc., and are presented to show differences between EID and Corteva, Inc.

•Note 1 - Summary of Significant Accounting Policies - refer to page 10 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 2 - Recent Accounting Guidance - refer to page 11 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 3 - Divestitures and Other Transactions - refer to page 12 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 4 - Revenue - refer to page 15 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 5 - Restructuring and Asset Related Charges - Net - refer to page 17 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 6 - Related Parties - Differences exist between Corteva, Inc. and EID; refer to EID Note 2 - Related Party Transactions, below

•Note 7 - Supplementary Information - refer to page 19 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 8 - Income Taxes - refer to page 21 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 10 - Accounts and Notes Receivable - Net - refer to page 23 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 11 - Inventories - refer to page 24 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 12 - Other Intangible Assets - refer to page 24 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 13 - Short-Term Borrowings, Long-Term Debt and Available Credit Facilities - refer to page 25 of the Corteva, Inc. interim Consolidated Financial Statements. In addition, EID has a related party loan payable to Corteva, Inc.; refer to EID Note 2 - Related Party Transactions, below

•Note 14 - Commitments and Contingent Liabilities - refer to page 26 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 15 - Stockholders' Equity - refer to page 32 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 16 - Pension Plans and Other Post Employment Benefits - refer to page 35 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 17 - Financial Instruments - refer to page 36 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 18 - Fair Value Measurements - refer to page 41 of the Corteva, Inc. interim Consolidated Financial Statements

•Note 19 - Segment Information - Differences exist between Corteva, Inc. and EID; refer to EID Note 3 - Segment Information, below