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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2020
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 June 30 | Six Months Ended June 30
(In millions) | 2020 | 2019 | 2020 | 2019
Income from continuing operations after income taxes | $ | 766 |  | $ | 483 |  | $ | 1,047 |  | $ | 299 |
Net income attributable to continuing operations noncontrolling interests | 6 |  | 13 |  | 16 |  | 21 |
Income from continuing operations available to Corteva common stockholders | 760 |  | 470 |  | 1,031 |  | 278 |
(Loss) income from discontinued operations, net of tax | — |  | (1,077 | ) | 1 |  | (717 | )
Net income attributable to discontinued operations noncontrolling interests | — |  | 1 |  | — |  | 5 |
(Loss) income from discontinued operations available to Corteva common stockholders | — |  | (1,078 | ) | 1 |  | (722 | )
Net income (loss) available to common stockholders | $ | 760 |  | $ | (608 | ) | $ | 1,032 |  | $ | (444 | )
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 June 30 | Six Months Ended June 30
(Dollars per share) | 2020 | 2019 | 2020 | 2019
Earnings per share of common stock from continuing operations | $ | 1.01 |  | $ | 0.63 |  | $ | 1.37 |  | $ | 0.37 |
Loss per share of common stock from discontinued operations | — |  | (1.44 | ) | — |  | (0.96 | )
Earnings (loss) per share of common stock | $ | 1.01 |  | $ | (0.81 | ) | $ | 1.37 |  | $ | (0.59 | )
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 June 30 | Six Months Ended June 30
(Dollars per share) | 2020 | 2019 | 2020 | 2019
Earnings per share of common stock from continuing operations | $ | 1.01 |  | $ | 0.63 |  | $ | 1.37 |  | $ | 0.37 |
Loss per share of common stock from discontinued operations | — |  | (1.44 | ) | — |  | (0.96 | )
Earnings (loss) per share of common stock | $ | 1.01 |  | $ | (0.81 | ) | $ | 1.37 |  | $ | (0.59 | )
Share Count Information |
Share Count Information | Three Months Ended June 30 | Six Months Ended June 30
(Shares in millions) | 2020 | 2019 | 2020 | 2019
Weighted-average common shares - basic 1 | 749.2 |  | 749.4 |  | 749.6 |  | 749.4 |
Plus dilutive effect of equity compensation plans 2 | 2.4 |  | 0.6 |  | 2.4 |  | 0.3 |
Weighted-average common shares - diluted | 751.6 |  | 750.0 |  | 752.0 |  | 749.7 |
Potential shares of common stock excluded from EPS calculations 3 | 11.9 |  | 7.8 |  | 11.0 |  | 7.8 |
1. | Share amounts for all periods prior to the Corteva Distribution were based on 748.8 million shares of Corteva, Inc. common stock distributed to holders of DowDuPont's common stock on June 1, 2019, plus 0.6 million of additional shares in which accelerated vesting conditions have been met.
2. | 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.
3. 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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