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Earnings Per Share of Common Stock (Notes) | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | EARNINGS PER SHARE OF COMMON STOCK On June 1, 2019, the date of the Corteva Distribution, 748,815,000 shares of the company’s common stock were distributed to DowDuPont shareholders of record as of May 24, 2019. The following tables provide earnings per share calculations for the periods indicated below:
Net Income (Loss) for Earnings Per Share Calculations - Basic and Diluted | For the Year Ended December 31,
(In millions) | 2020 | 2019 | 2018
Income (loss) from continuing operations after income taxes | $ | 756 |  | $ | (270) |  | $ | (6,775) |
Net income attributable to continuing operations noncontrolling interests | 20 |  | 13 |  | 29 |
Income (loss) from continuing operations attributable to Corteva common stockholders | 736 |  | (283) |  | (6,804) |
(Loss) income from discontinued operations, net of tax | (55) |  | (671) |  | 1,748 |
Net income attributable to discontinued operations noncontrolling interests | — |  | 5 |  | 9 |
(Loss) income from discontinued operations attributable to Corteva common stockholders | (55) |  | (676) |  | 1,739 |
Net income (loss) attributable to common stockholders | $ | 681 |  | $ | (959) |  | $ | (5,065) |
Earnings (Loss) Per Share Calculations - Basic | For the Year Ended December 31,
(Dollars per share) | 2020 | 2019 | 2018
Earnings (loss) per share of common stock from continuing operations | $ | 0.98 |  | $ | (0.38) |  | $ | (9.08) |
(Loss) earnings per share of common stock from discontinued operations | (0.07) |  | (0.90) |  | 2.32 |
Earnings (loss) per share of common stock | $ | 0.91 |  | $ | (1.28) |  | $ | (6.76) |
Earnings (Loss) Per Share Calculations - Diluted | For the Year Ended December 31,
(Dollars per share) | 2020 | 2019 | 2018
Earnings (loss) per share of common stock from continuing operations | $ | 0.98 |  | $ | (0.38) |  | $ | (9.08) |
(Loss) earnings per share of common stock from discontinued operations | (0.07) |  | (0.90) |  | 2.32 |
Earnings (loss) per share of common stock | $ | 0.91 |  | $ | (1.28) |  | $ | (6.76) |
Share Count Information | For the Year Ended December 31,
(Shares in millions) | 2020 | 2019 | 2018
Weighted-average common shares - basic 1 | 748.7 |  | 749.5 |  | 749.4 |
Plus dilutive effect of equity compensation plans 2 | 2.5 |  | — |  | — |
Weighted-average common shares - diluted | 751.2 |  | 749.5 |  | 749.4 |
Potential shares of common stock excluded from EPS calculations 3 | 9.4 |  | 14.4 |  | — |
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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