Long-Term Employee Benefits (Schedules of Net Periodic Benefit Costs) (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
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain (loss)		274
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Total loss recognized in other comprehensive loss, attributable to DuPont	573	375	387
Total recognized in net periodic benefit cost and other comprehensive loss	223	124	368
Other Postretirement Benefit Plan [Member] | Net Periodic Benefit (Credit) Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	11	15	17
Interest cost	87	112	121
Amortization of loss	78	78	57
Amortization of prior service (benefit) cost	(134)	(182)	(214)
Curtailment gain (loss)	(392)	(274)	0
Net periodic benefit (credit) cost	(350)	(251)	(19)
Other Postretirement Benefit Plan [Member] | Changes in Plan Assets and Benefit Obligations Recognized in OCI [Member]
Defined Benefit Plan Disclosure [Line Items]
Net loss (gain)	(153)	4	(280)
Amortization of loss	(78)	(78)	(57)
Prior service benefit	(28)	0	(50)
Amortization of prior service benefit	134	182	214
Curtailment gain	392	274	0
Effect of foreign exchange rates	0	1	0
Other Postretirement Benefit Plan [Member] | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] | Net Periodic Benefit (Credit) Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	0	(272)	3
Other Postretirement Benefit Plan [Member] | Continuing Operations [Member] | Net Periodic Benefit (Credit) Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit (credit) cost	(350)	$ 21	$ (22)
November 2016 Pension and OPEB Changes [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain (loss)	25
November 2016 Pension and OPEB Changes [Member] | Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain (loss)	$ 357