Long-Term Employee Benefits (Schedules of Net Periodic Benefit Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015		Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	$ 591		$ 406	$ 953
Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Total loss (benefit) recognized in other comprehensive income, attributable to DuPont	375		387	(452)
Total recognized in net periodic benefit cost and other comprehensive income	124		368	(565)
Net Periodic Benefit (Credit) Cost [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	15		17	29
Interest cost	112		121	130
Amortization of loss	78		57	76
Amortization of prior service (benefit) cost	(182)		(214)	(195)
Curtailment loss (gain)	(274)	[1]	0	(154)
Settlement loss	0		0	1
Net periodic benefit (credit) cost	(251)		(19)	(113)
Changes in Plan Assets and Benefit Obligations Recognized in OCI [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net loss (gain)	(4)		280	(513)
Amortization of loss	(78)		(57)	(76)
Prior service benefit	0		(50)	(211)
Amortization of prior service benefit (cost)	182		214	195
Curtailment (loss) gain	274	[1]	0	154
Settlement loss	0		0	(1)
Effect of foreign exchange rates	1		0	0
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] | Net Periodic Benefit (Credit) Cost [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	(272)		3	5
Continuing Operations [Member] | Net Periodic Benefit (Credit) Cost [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	$ 21		$ (22)	$ (118)

[1] As a result of the separation of the Performance Chemicals segment, the company recorded an other long-term employee benefit plans curtailment gain of $274.