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Earnings Per Share of Common Stock (Earnings Per Share of Common Stock Reconciliation) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Earnings Per Share [Abstract] |  |  |  |
Income from continuing operations after income taxes attributable to DuPont | $ 1,023 | $ 969 | $ 2,246 | $ 1,986
Preferred dividends | (3) | (3) | (5) | (5)
Income from continuing operations after income taxes available to DuPont common stockholders | 1,020 | 966 | 2,241 | 1,981
Loss from discontinued operations after income taxes available to DuPont common stockholders | (3) | (29) | 0 | (15)
Net income available to common stockholders | $ 1,017 | $ 937 | $ 2,241 | $ 1,966
Weighted-average number of common shares outstanding - Basic | 875,013,000 | 905,761,000 | 874,269,000 | 906,296,000
Dilutive effect of the company's employee compensation plans | 4,166,000 | 5,920,000 | 3,945,000 | 6,452,000
Weighted average number of common shares outstanding - Diluted | 879,179,000 | 911,681,000 | 878,214,000 | 912,748,000

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- Definition Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.13) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4613673-111683 + Details
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