Dow Consolidated Statements of Cash Flows Statement - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Statement of Cash Flows [Abstract]
Net income	$ 41	$ 691
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	0	445
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	41	246
Depreciation and amortization	1,424	1,486
Credit for deferred income tax	(59)	(63)
Earnings of nonconsolidated affiliates less than dividends received	455	880
Net periodic pension benefit cost	129	57
Pension contributions	(112)	(152)
Net gain on sales of assets, businesses and investments	(39)	(27)
Restructuring and asset related charges - net	102	221
Other net loss	163	115
Accounts and notes receivable	696	239
Inventories	429	58
Accounts payable	(896)	(450)
Other assets and liabilities, net	502	(607)
Cash provided by operating activities - continuing operations	2,835	2,003
Cash provided by (used for) operating activities - discontinued operations	(6)	253
Cash provided by operating activities	2,829	2,256
Capital expenditures	(668)	(912)
Investment in gas field developments	(5)	(48)
Payments to Acquire Equipment on Lease	(2)	(9)
Proceeds from sales of property and businesses, net of cash divested	14	9
Investments in and loans to nonconsolidated affiliates	(236)	(228)
Distributions and loan repayments from nonconsolidated affiliates	6	0
Purchases of investments	(462)	(393)
Proceeds from sales and maturities of investments	790	735
Payments for (Proceeds from) Other Investing Activities	29	0
Cash used for investing activities - continuing operations	(534)	(846)
Cash used for investing activities - discontinued operations	0	(34)
Cash used for investing activities	(534)	(880)
Changes in short-term notes payable	181	162
Proceeds from Short-term Debt, Maturing in More than Three Months	163	0
Repayments of Short-term Debt, Maturing in More than Three Months	(100)	0
Proceeds from issuance of long-term debt	2,509	2,010
Payments on long-term debt	(2,359)	(4,221)
Purchases of treasury stock	(125)	(305)
Proceeds from issuance of stock	30	34
Transaction financing, debt issuance and other costs	(99)	(56)
Employee taxes paid for share-based payment arrangements	(26)	(50)
Distributions to noncontrolling interests	(19)	(7)
Payments to Noncontrolling Interests	0	(127)
Dividends paid to stockholders	(1,034)	(517)
Dividends paid to DowDuPont Inc.	0	(535)
Settlements and transfers related to separation from DowDuPont Inc.	0	1,963
Cash used for financing activities - continuing operations	(879)	(1,649)
Cash used for financing activities - discontinued operations	0	(18)
Cash used for financing activities	(879)	(1,667)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(66)	10
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	1,350	(281)
Cash, cash equivalents and restricted cash at beginning of period	2,380	2,764
Cash, cash equivalents and restricted cash at end of period	3,730	2,483
Less: Restricted cash and cash equivalents, included in "Other current assets"	6	37
Cash and cash equivalents at end of period	$ 3,724	$ 2,446