Dow Consolidated Statements of Cash Flows Statement - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Statement of Cash Flows [Abstract]
Net income (loss)	$ 4,644	$ 40
Depreciation and amortization	2,187	2,148
Provision (credit) for deferred income tax	488	(198)
Earnings of nonconsolidated affiliates less than (in excess of) dividends received	(519)	515
Net periodic pension benefit cost	34	195
Pension contributions	1,166	188
Net gain on sales of assets, businesses and investments	(67)	(283)
Restructuring and asset related charges - net	22	719
Other net loss	874	288
Accounts and notes receivable	(2,222)	339
Inventories	(1,502)	587
Accounts payable	1,487	(560)
Other assets and liabilities, net	252	994
Cash provided by operating activities - continuing operations	4,512	4,596
Cash used for operating activities - discontinued operations	(78)	0
Cash provided by operating activities	4,434	4,596
Capital expenditures	(1,035)	(955)
Investment in gas field developments	(44)	(5)
Payments to Acquire Equipment on Lease	(5)	(4)
Proceeds from sales of property and businesses, net of cash divested	15	295
Payments to Acquire Businesses, Net of Cash Acquired	(107)	(130)
Investments in and loans to nonconsolidated affiliates	0	(280)
Distributions and loan repayments from nonconsolidated affiliates	11	7
Purchases of investments	(1,004)	(582)
Proceeds from sales and maturities of investments	644	1,009
Payments for (Proceeds from) Other Investing Activities	(10)	29
Cash used for investing activities	(1,535)	(616)
Changes in short-term notes payable	(44)	(267)
Proceeds from Short-term Debt, Maturing in More than Three Months	144	163
Repayments of Short-term Debt, Maturing in More than Three Months	0	(163)
Proceeds from issuance of long-term debt	95	4,649
Payments on long-term debt	(2,638)	(4,347)
Purchases of treasury stock	(600)	(125)
Proceeds from issuance of stock	212	53
Transaction financing, debt issuance and other costs	(536)	(175)
Employee taxes paid for share-based payment arrangements	(11)	(26)
Distributions to noncontrolling interests	(35)	(19)
Dividends paid to stockholders	(1,561)	(1,552)
Cash used for financing activities	(4,974)	(1,809)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(57)	4
Increase (decrease) in cash, cash equivalents and restricted cash	(2,132)	2,175
Cash, cash equivalents and restricted cash at beginning of period	5,108	2,380
Cash, cash equivalents and restricted cash at end of period	2,976	4,555
Less: Restricted cash and cash equivalents, included in "Other current assets"	65	6
Cash and cash equivalents and end of period	$ 2,911	$ 4,549