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EID Income Taxes Rate Reconciliation (Details) - Continuing Operations [Member] - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Statutory U.S. federal income tax rate |  | 21.00% | 21.00% | 21.00%
Effective tax rates on international operations - net | [1] | (2.50%) | (13.90%) | (18.40%)
Acquisitions, divestitures, and ownership restructuring activities | [2] | (0.10%) | (0.30%) | (10.70%)
U.S. research and development credit |  | (2.40%) | (2.90%) | 7.00%
Exchange gains/losses | [3] | 1.90% | 3.50% | (1.80%)
State and Local Income Taxes |  | 2.10% | 4.00% | 3.20%
Impact of Swiss Tax Reform | [4] | 0.20% | (27.00%) | 11.90%
Excess tax benefits (tax deficiency) from stock-compensation |  | (0.20%) | 1.00% | (0.60%)
Tax settlements and expiration of statue of limitations |  | 0.00% | 0.40% | 3.90%
Other, net |  | 2.30% | 2.20% | (0.90%)
Effective Income Tax Rate |  | 22.30% | (12.00%) | 14.60%
Swiss Tax Reform [Member] |  |  |  |
Other Tax (Benefit) Expense |  |  | $ (182) | $ (38)
EID [Member] |  |  |  |
Statutory U.S. federal income tax rate |  | 21.00% | 21.00% | 21.00%
Effective tax rates on international operations - net | [5] | (2.60%) | (16.40%) | (13.80%)
Acquisitions, divestitures, and ownership restructuring activities | [6] | (0.10%) | (0.30%) | (8.00%)
U.S. research and development credit |  | (2.50%) | (3.40%) | 5.20%
Exchange gains/losses | [7] | 1.90% | 4.10% | (1.30%)
State and Local Income Taxes |  | 2.20% | 4.20% | 3.00%
Impact of Swiss Tax Reform | [8] | 0.20% | (31.70%) | 8.90%
Excess tax benefits (tax deficiency) from stock-compensation |  | (0.20%) | 1.20% | (0.50%)
Tax settlements and expiration of statue of limitations |  | 0.00% | 0.40% | 2.90%
Other, net |  | 2.30% | 2.60% | (0.60%)
Effective Income Tax Rate |  | 22.20% | (18.30%) | 16.80%
EID [Member] | Tax benefit (charge) related to The Act [Member] |  |  |  |
Other Tax (Benefit) Expense |  | $ (51) |  |
EID [Member] | Swiss Tax Reform [Member] |  |  |  |
Other Tax (Benefit) Expense |  | $ (182) | $ (38) |
[1] | Includes the effects of local and U.S. taxes related to earnings of non-U.S. subsidiaries, changes in the amount of unrecognized tax benefits associated with these earnings, losses at non-U.S. subsidiaries without local tax benefits due to valuation allowances, and other permanent differences between tax and U.S. GAAP results. Includes a tax benefit of $(51) million for the year ended December 31, 2020, related to a return to accrual adjustment associated with an elective change in accounting method for the 2019 tax year impact of foreign tax provisions.
[2] | See Notes 4 - Common Control Business Combination, and Note 5 - Divestitures and Other Transactions, to the Consolidated Financial Statements, for additional information.
[3] | Principally reflects the impact of foreign exchange gains and losses on net monetary assets for which no corresponding tax impact is realized. Further information about the company's foreign currency hedging program is included in Note 9 - Supplementary Information, and Note 22 - Financial Instruments, under the heading Foreign Currency Risk.
[4] | Reflects tax benefits of $(182) million primarily driven by the recognition of an elective cantonal component of the recent enactment of the Federal Act on Tax Reform and AHV Financing ("Swiss Tax Reform") for the year ended December 31, 2020. Reflects tax benefits of $(38) million associated with the enactment of the Federal Act on Tax Reform and AHV Financing ("Swiss Tax Reform"), for the year ended December 31, 2019.
[5] | Includes the effects of local and U.S. taxes related to earnings of non-U.S. subsidiaries, changes in the amount of unrecognized tax benefits associated with these earnings, losses at non-U.S. subsidiaries without local tax benefits due to valuation allowances, and other permanent differences between tax and U.S. GAAP results. Includes a tax benefit of $(51) million for the year ended December 31, 2020, related to a return to accrual adjustment associated with an elective change in accounting method that alters the 2019 impact of foreign tax provisions.
[6] | See Notes 4 - Common Control Business Combination, and Note 5 - Divestitures and Other Transactions, of the Corteva, Inc. Consolidated Financial Statements for additional information.
[7] | Principally reflects the impact of foreign exchange gains and losses on net monetary assets for which no corresponding tax impact is realized. Further information about the company's foreign currency hedging program is included in Note 9 - Supplementary Information, and Note 22 - Financial Instruments, of the Corteva, Inc. Consolidated Financial Statements under the heading Foreign Currency Risk.
[8] | Reflects tax benefits of $(182) million primarily driven by the recognition of an elective cantonal component of the recent enactment of the Federal Act on Tax Reform and AHV Financing ("Swiss Tax Reform") for the year ended December 31, 2020. Reflects tax benefits of $(38) million associated with the enactment of the Federal Act on Tax Reform and AHV Financing ("Swiss Tax Reform"), for the year ended December 31, 2019.

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