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Earnings Per Share of Common Stock Earnings Per Share Reconciliation (Details) - USD ($) $ in Millions |  | 8 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 31, 2017 | Aug. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Predecessor [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Income from Continuing Operations after Income Taxes, attributable to DuPont |  |  | $ 1,624 | $ 2,072 | $ 1,443
Preferred Dividends |  |  | (7) | (10) | (10)
Income from continuing operations after income taxes available to DuPont common stockholders |  |  | 1,617 | 2,062 | 1,433
Income from Discontinued Operations after income taxes available to DuPont common stockholders |  |  | 117 | 441 | 510
Net Income Available to Common Stockholders |  |  | $ 1,734 | $ 2,503 | $ 1,943
Weighted Average Number of Shares Outstanding, Basic |  |  | 868,000,000 | 873,000,000 | 894,000,000
Dilutive effect of the company's employee compensation plans | [1] |  | 5,000,000 | 4,000,000 | 6,000,000
Weighted Average Number of Shares Outstanding, Diluted | [1] |  | 872,000,000 | 877,000,000 | 900,000,000
Common Stock [Member] | Merger with Dow [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Share exchange ratio, DuPont to DowDuPont |  | 1.2820 |  |  |
[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.

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