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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
Net Income for Earnings Per Share Calculations - Basic and Diluted | Three Months Ended March 31, |
(In millions) | 2021 | 2020 |  |
Income from continuing operations after income taxes | $ | 613 |  | $ | 281 |  |  |
Net income attributable to continuing operations noncontrolling interests | 3 |  | 10 |  |  |
Income from continuing operations available to Corteva common stockholders | 610 |  | 271 |  |  |
(Loss) income from discontinued operations available to Corteva common stockholders | (10) |  | 1 |  |  |
Net income available to common stockholders | $ | 600 |  | $ | 272 |  |  |
Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block] |
Earnings Per Share Calculations - Basic | Three Months Ended March 31, |
(Dollars per share) | 2021 | 2020 |  |
Earnings per share of common stock from continuing operations | $ | 0.82 |  | $ | 0.36 |  |  |
Loss per share of common stock from discontinued operations | (0.01) |  | — |  |  |
Earnings per share of common stock | $ | 0.81 |  | $ | 0.36 |  |  |
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block] |
Earnings Per Share Calculations - Diluted | Three Months Ended March 31, |
(Dollars per share) | 2021 | 2020 |  |
Earnings per share of common stock from continuing operations | $ | 0.81 |  | $ | 0.36 |  |  |
Loss per share of common stock from discontinued operations | (0.01) |  | — |  |  |
Earnings per share of common stock | $ | 0.80 |  | $ | 0.36 |  |  |
Share Count Information |
Share Count Information | Three Months Ended March 31, |
(Shares in millions) | 2021 | 2020 |  |
Weighted-average common shares - basic | 743.4 |  | 749.9 |  |  |
Plus dilutive effect of equity compensation plans 1 | 6.2 |  | 2.6 |  |  |
Weighted-average common shares - diluted | 749.6 |  | 752.5 |  |  |
Potential shares of common stock excluded from EPS calculations 2 | 2.9 |  | 9.1 |  |  |
1.Diluted earnings per share considers the impact of potentially dilutive securities except in periods in which there is a loss because the inclusion of the potential common shares would have an anti-dilutive effect. 2.These outstanding potential shares of common stock relating to stock options, restricted stock units and performance-based restricted stock units were excluded from the calculation of diluted earnings per share because the effect of including them would have been anti-dilutive.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of the effect of income (loss) on basic earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=120380238&loc=d3e4984-109258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1278-109256 + Details
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