Dow Consolidated Statements of Cash Flows Statement - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Statement of Cash Flows [Abstract]
Net income	$ 1,038	$ 3,852
Income from discontinued operations, net of tax	445	1,403
Income from continuing operations, net of tax	593	2,449
Depreciation and amortization	2,225	2,183
Provision (credit) for deferred income tax	(146)	5
Earnings of nonconsolidated affiliates less than dividends received	927	81
Net periodic pension benefit cost	101	252
Pension contributions	(206)	(1,533)
Net gain on sales of assets, businesses and investments	(48)	(24)
Adjustment to gain on step acquisition of nonconsolidated affiliate	0	20
Restructuring and asset related charges - net	368	175
Other net loss	143	327
Accounts and notes receivable	994	(1,422)
Inventories	483	(1,120)
Accounts payable	(926)	1,453
Other assets and liabilities, net	(715)	(1,139)
Cash provided by operating activities - continuing operations	3,793	1,707
Cash provided by operating activities - discontinued operations	187	817
Cash provided by operating activities	3,980	2,524
Capital expenditures	(1,384)	(1,445)
Investment in gas field developments	(71)	(82)
Purchases of previously leased assets	(9)	0
Proceeds from sales of property and businesses, net of cash divested	47	15
Acquisitions of property and businesses, net of cash acquired	0	20
Investments in and loans to nonconsolidated affiliates	(333)	(11)
Distributions and loan repayments from nonconsolidated affiliates	0	55
Purchases of investments	(784)	(1,301)
Proceeds from sales and maturities of investments	973	1,025
Proceeds from interests in trade accounts receivable conduits	0	657
Cash used for investing activities - continuing operations	(1,561)	(1,107)
Cash used for investing activities - discontinued operations	(34)	(203)
Cash used for investing activities	(1,595)	(1,310)
Changes in short-term notes payable	149	425
Proceeds from issuance of long-term debt	2,146	0
Payments on long-term debt	(4,271)	(859)
Purchases of treasury stock	(406)	0
Proceeds from issuance of parent company stock	39	106
Transaction financing, debt issuance and other costs	(61)	0
Employee taxes paid for share-based payment arrangements	(54)	(76)
Distributions to noncontrolling interests	(16)	(41)
Purchases of noncontrolling interests	(131)	0
Dividends paid to stockholders	(1,033)	0
Dividends paid to DowDuPont Inc.	(535)	(3,158)
Settlements and transfers related to separation from DowDuPont Inc.	1,935	(276)
Other financing activities, net	0	2
Cash used for financing activities - continuing operations	(2,238)	(3,877)
Cash used for financing activities - discontinued operations	(18)	(44)
Cash used for financing activities	(2,256)	(3,921)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(54)	(59)
Decrease in cash, cash equivalents and restricted cash	75	(2,766)
Cash, cash equivalents and restricted cash at beginning of period	2,764	6,208
Cash, cash equivalents and restricted cash at end of period	2,839	3,442
Less: Restricted cash and cash equivalents, included in Other current assets	16	31
Cash and cash equivalents at end of period	$ 2,823	$ 3,411