Long-Term Employee Benefits (Schedules of Net Periodic Benefit Cost of Pension Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	$ 572	$ 591	$ 406
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Noncontrolling interest	0	0	1
Total (benefit) loss recognized in other comprehensive loss, attributable to DuPont	(486)	(1,273)	3,474
Total recognized in net periodic benefit cost and other comprehensive loss	86	(682)	3,880
Net Periodic Benefit (Credit) Cost [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	174	232	241
Interest cost	800	1,084	1,162
Expected return on plan assets	(1,320)	(1,554)	(1,611)
Amortization of loss	822	768	601
Amortization of prior service (benefit) cost	(6)	(9)	2
Curtailment gain (loss)	(40)	6	(4)
Settlement loss	62	76	7
Net periodic benefit (credit) cost	572	591	406
Changes in Plan Assets and Benefit Obligations Recognized in OCI [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net loss	(570)	(57)	(4,131)
Amortization of loss	(822)	(768)	(601)
Prior service benefit	0	0	(44)
Amortization of prior service benefit (cost)	6	9	(2)
Curtailment (loss) gain	(40)	6	(4)
Settlement loss	(62)	(76)	(7)
Effect of foreign exchange rates	(138)	(119)	0
Spin-off of Chemours	0	382	0
Total (benefit) loss recognized in other comprehensive loss	(486)	(1,273)	3,473
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)	(5)	40
Continuing Operations [Member] | Net Periodic Benefit (Credit) Cost [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	$ 577	$ 596	$ 366