Supplementary Information Sundry Income (Expense) - Net (Details) - USD ($) $ in Millions		3 Months Ended	4 Months Ended	8 Months Ended		12 Months Ended
		Mar. 31, 2017	Dec. 31, 2017	Aug. 31, 2017		Dec. 31, 2018	Dec. 31, 2016
Successor [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Royalty Income			$ 60			$ 170
Interest income			41			92
Equity in earnings of affiliates - net			1			51
Net gain on sales of businesses and other assets			16			26
Net exchange (losses) gains			8			(110)
Non-operating pension and other post employment benefit credit (cost)	[1]		134			368
Miscellaneous income and expenses, net	[2]		24			116
Sundry income (expense) - net			$ 224			$ 543
Predecessor [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Royalty Income				$ 84			$ 170
Interest income				83			102
Equity in earnings of affiliates - net				55			99
Net gain on sales of businesses and other assets				205	[3]		435	[4]
Net exchange (losses) gains				(394)			(106)
Non-operating pension and other post employment benefit credit (cost)	[1]			(278)			(40)
Miscellaneous income and expenses, net	[2]			132			7
Sundry income (expense) - net				(113)			667
Food Safety Diagnostic Business [Member] | Predecessor [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Pre-tax gain on disposal		$ 162		162
Gain on disposal, net of tax				$ 86
DuPont (Shenzhen) Manufacturing Limited [Member] | Predecessor [Member]
Schedule of Sundry Income (Expense) - Net [Line Items]
Gain on sale of entity							369
Gain on sale of entity, after tax							$ 214

[1] Includes non-service components of net periodic benefit credits (costs) (interest cost, expected return on plan assets, amortization of unrecognized (gain) loss, amortization of prior service benefit and curtailment/settlement gain). See Note 2 for discussion of ASU No. 2017-07.

[2] Miscellaneous income and expenses - net, includes interest items (in the Predecessor periods only), gains (losses) on available for sale securities, gains related to litigation settlements, licensing income, gains on purchases, and other items.

[3] Includes a pre-tax gain of $162 million ($86 million net of tax) for the period January 1 through August 31, 2017 related to the sale of global food safety diagnostics. See Note 4 for additional information.

[4] Includes a pre-tax gain of $369 million ($214 million net of tax) for the year ended December 31, 2016 related to the sale of Historical DuPont (Shenzhen) Manufacturing Limited. See Note 4 for additional information.