Consolidated Statements of Cash Flows - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2017	Aug. 31, 2017	Dec. 31, 2018	Dec. 31, 2016
Cash, cash equivalents and restricted cash at beginning of period			$ 7,808
Cash, cash equivalents and restricted cash at end of period	$ 7,808		4,966
Successor [Member]
Net (loss) income	1,010		(5,018)
Depreciation and Amortization	815		2,589
Provision for Deferred Income Tax	(3,015)		95
Net Periodic Pension (Benefit) Cost	(111)		(322)
Pension Contributions	(68)		(1,308)
Net gain on sales of property, businesses, consolidated companies, and investments	(16)		(26)
Goodwill Impairment Charge	0		4,503
Loss on Extinguishment of Debt	0		81
Restructuring and Asset Related Charges - Net	180		485
Amortization of inventory step-up	1,573		1,628
Other net loss	125		290
Accounts and Notes Receivable	2,107		(546)
Inventories	(1,010)		(522)
Accounts Payable	934		309
Other Assets and Liabilities, Net	1,672		(1,390)
Cash provided by (used for) operating activities	4,196		848
Capital expenditures	(426)		(1,311)
Proceeds from the sale of property, businesses, and consolidated companies, net of cash divested	1,268		59
Acquisitions of businesses - Net of Cash Acquired	3		0
Investments in and loans to nonconsolidated affiliates	(5)		(8)
Purchases of investments	(1,043)		(1,257)
Proceeds from Sale and Maturities of Investments	2,938		2,186
Other investing activities - net	33		(3)
Cash (used for) provided by investing activities	2,768		(334)
Change in short-term (less than 90 days) borrowings	(2,541)		399
Proceeds from Issuance of Long-term Debt	499		755
Repayments of Long-term Debt	(42)		(5,951)
Proceeds from Stock Options Exercised	30		85
Payments of Dividends to Stockholders	(332)		(10)
Distributions to DowDuPont	(829)		(2,806)
Contributions from DowDuPont	0		4,849
Debt extinguishment costs	0		(378)
Other financing activities	(12)		(55)
Cash (used for) provided by financing activities	(3,227)		(3,112)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(22)		(244)
Change in cash classified as held for sale	88		0
(Decrease) increase on cash, cash equivalents and restricted cash	3,803		(2,842)
Cash, cash equivalents and restricted cash at beginning of period	4,005		7,808
Cash, cash equivalents and restricted cash at end of period	7,808	$ 4,005	4,966
Interest, net of amounts capitalized	76		918
Income Taxes	(437)		$ 780
Predecessor [Member]
Net (loss) income		1,761		$ 2,525
Depreciation and Amortization		749		1,258
Net Periodic Pension (Benefit) Cost		295		572
Pension Contributions		(3,024)		(535)
Net gain on sales of property, businesses, consolidated companies, and investments		(204)		(436)
Goodwill Impairment Charge		0		0
Loss on Extinguishment of Debt		0		0
Restructuring and Asset Related Charges - Net		323		556
Asset related charges		279		682
Other net loss		481		366
Accounts and Notes Receivable		(2,269)		(270)
Inventories and Other Operating Assets		(202)		(54)
Accounts Payable and Other Operating Liabilities		(1,555)		(674)
Accrued Interest and Income Taxes		(260)		(77)
Cash provided by (used for) operating activities		(3,949)		3,357
Capital expenditures		(687)		(1,019)
Proceeds from the sale of property, businesses, and consolidated companies, net of cash divested		300		316
Acquisitions of businesses - Net of Cash Acquired		(246)		0
Investments in and loans to nonconsolidated affiliates		(22)		(19)
Purchases of investments		(5,457)		(2,633)
Proceeds from Sale and Maturities of Investments		3,977		2,181
Foreign currency exchange contract settlements		(206)		(385)
Other investing activities - net		(41)		45
Cash (used for) provided by investing activities		(2,382)		(1,514)
Change in short-term (less than 90 days) borrowings		3,610		387
Proceeds from Issuance of Long-term Debt		2,734		813
Repayments of Long-term Debt		(229)		(1,440)
Repurchase of Common Stock		0		(916)
Proceeds from Stock Options Exercised		235		154
Payments of Dividends to Stockholders		(666)		(1,335)
Debt extinguishment costs		0		0
Other financing activities		(52)		(48)
Cash (used for) provided by financing activities		5,632		(2,385)
Effect of exchange rate changes on cash, cash equivalents and restricted cash		187		(153)
Change in cash classified as held for sale		(31)		15
(Decrease) increase on cash, cash equivalents and restricted cash		(543)		(680)
Cash, cash equivalents and restricted cash at beginning of period	$ 4,005	4,548		5,228
Cash, cash equivalents and restricted cash at end of period		4,005		4,548
Interest, net of amounts capitalized		331		386
Income Taxes		$ 272		$ 735