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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
Net Income (Loss) for Earnings Per Share Calculations - Basic and Diluted | Three Months Ended September 30, | Nine Months Ended September 30, |
(In millions) | 2021 | 2020 | 2021 | 2020 |  |
Income (loss) from continuing operations after income taxes | $ | 36 |  | $ | (390) |  | $ | 1,667 |  | $ | 657 |  |  |
Net income attributable to continuing operations noncontrolling interests | 2 |  | 2 |  | 8 |  | 18 |  |  |
Income (loss) from continuing operations available to Corteva common stockholders | 34 |  | (392) |  | 1,659 |  | 639 |  |  |
(Loss) income from discontinued operations available to Corteva common stockholders | (4) |  | — |  | (59) |  | 1 |  |  |
Net income (loss) available to common stockholders | $ | 30 |  | $ | (392) |  | $ | 1,600 |  | $ | 640 |  |  |
Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block] |
Earnings (Loss) Per Share Calculations - Basic | Three Months Ended September 30, | Nine Months Ended September 30,
(Dollars per share) | 2021 | 2020 | 2021 | 2020
Earnings (loss) per share of common stock from continuing operations | $ | 0.05 |  | $ | (0.52) |  | $ | 2.25 |  | $ | 0.85 |
Loss per share of common stock from discontinued operations | (0.01) |  | — |  | (0.08) |  | — |
Earnings (loss) per share of common stock | $ | 0.04 |  | $ | (0.52) |  | $ | 2.17 |  | $ | 0.85 |
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block] |
Earnings (Loss) Per Share Calculations - Diluted | Three Months Ended September 30, | Nine Months Ended September 30,
(Dollars per share) | 2021 | 2020 | 2021 | 2020
Earnings (loss) per share of common stock from continuing operations | $ | 0.05 |  | $ | (0.52) |  | $ | 2.23 |  | $ | 0.85 |
Loss per share of common stock from discontinued operations | (0.01) |  | — |  | (0.08) |  | — |
Earnings (loss) per share of common stock | $ | 0.04 |  | $ | (0.52) |  | $ | 2.15 |  | $ | 0.85 |
Share Count Information |
Share Count Information | Three Months Ended September 30, | Nine Months Ended September 30,
(Shares in millions) | 2021 | 2020 | 2021 | 2020
Weighted-average common shares - basic | 733.8 |  | 749.5 |  | 738.1 |  | 749.5 |
Plus dilutive effect of equity compensation plans 1 | 5.7 |  | — |  | 5.9 |  | 2.5 |
Weighted-average common shares - diluted | 739.5 |  | 749.5 |  | 744.0 |  | 752.0 |
Potential shares of common stock excluded from EPS calculations 2 | 3.0 |  | 14.6 |  | 3.1 |  | 9.7 |
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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