Earnings Per Share of Common Stock (Earnings Per Share of Common Stock Reconciliation) (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]
Income from continuing operations after income taxes attributable to DuPont	$ 2,849	$ 2,447	$ 3,192
Preferred dividends	(10)	(10)	(10)
Income from continuing operations after income taxes available to DuPont common shareholders	2,839	2,437	3,182
Income from discontinued operations after income taxes	1,999	308	367
Net income available to common stockholders	$ 4,838	$ 2,745	$ 3,549
Weighted-average number of common shares outstanding - Basic	925,984	933,275	928,417
Dilutive effect of the company's employee compensation plans	7,163	8,922	12,612
Weighted average number of common shares outstanding - Diluted	933,147	942,197	941,029