Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Net income	$ 3,636		$ 4,862		$ 2,780
Cumulative translation adjustment	(876)		25		77
Additions and revaluations of derivatives designated as cash flow hedges	53	[1]	(58)	[1]	8	[1]
Clearance of hedge results to earnings	15		(25)		(65)
Net revaluation and clearance of cash flow hedges to earnings	68		(83)		(57)
Net unrealized gain (loss) on securities	0		1		(2)
Other comprehensive (loss) income, before tax	(4,668)		4,868		253
Income tax benefit (expense) related to items of other comprehensive income	1,403		(1,665)		(121)
Other comprehensive (loss) income, net of tax	(3,265)		3,203		132
Comprehensive income	371		8,065		2,912
Less: Comprehensive income attributable to noncontrolling interests	12		12		53
Comprehensive income attributable to DuPont	359		8,053		2,859
Pension Benefit Plans, Net [Member]
Net (loss) gain	(4,131)		3,293		(1,433)
Prior service benefit	44		62		22
Amortization of prior service cost (benefit)	2		8		13
Amortization of loss	601		957		887
Curtailment / settlement (gain) loss	11		153		7
Benefit plans, net	(3,473)		4,473		(504)
Other Long-Term Employee Benefit Plans [Member]
Net (loss) gain	(280)		513		(60)
Prior service benefit	50		211		857
Amortization of prior service cost (benefit)	(214)		(195)		(155)
Amortization of loss	57		76		94
Curtailment / settlement (gain) loss	0		(153)		3
Benefit plans, net	$ (387)		$ 452		$ 739

[1] These amounts represent changes in accumulated other comprehensive income excluding changes due to reclassifying amounts to the Consolidated Income Statements.