Long-Term Employee Benefits (Schedules of Net Periodic Benefit Cost of Pension Benefits) (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
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncontrolling interest	0	1	0
Total loss (benefit) recognized in other comprehensive income, attributable to DuPont	(1,273)	3,474	(4,473)
Total recognized in net periodic benefit cost and other comprehensive income	(682)	3,880	(3,520)
Net Periodic Benefit (Credit) Cost [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	232	241	271
Interest cost	1,084	1,162	1,088
Expected return on plan assets	(1,554)	(1,611)	(1,524)
Amortization of loss	768	601	957
Amortization of prior service (benefit) cost	(9)	2	8
Curtailment (gain) loss	(6)	4	1
Settlement loss	76	7	152
Net periodic benefit (credit) cost	591	406	953
Changes in Plan Assets and Benefit Obligations Recognized in OCI [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net loss (gain)	57	4,131	(3,293)
Amortization of loss	(768)	(601)	(957)
Prior service benefit	0	(44)	(62)
Amortization of prior service benefit (cost)	9	(2)	(8)
Curtailment (loss) gain	6	(4)	(1)
Settlement loss	(76)	(7)	(152)
Effect of foreign exchange rates	(119)	0	0
Change in plan assets and benefit obligations, Spin-off of Chemours	(382)	0	0
Total (benefit) loss recognized in other comprehensive income	(1,273)	3,473	(4,473)
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] | Net Periodic Benefit (Credit) Cost [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	(5)	40	50
Continuing Operations [Member] | Net Periodic Benefit (Credit) Cost [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	$ 596	$ 366	$ 903