Dow Consolidated Statements of Cash Flows Statement - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Statement of Cash Flows [Abstract]
Net income	$ 691	$ 2,803
Income from discontinued operations, net of tax	445	1,068
Income from continuing operations, net of tax	246	1,735
Depreciation and amortization	1,486	1,451
Provision (credit) for deferred income tax	(63)	7
Earnings of nonconsolidated affiliates less than dividends received	880	196
Net periodic pension benefit cost	57	169
Pension contributions	(152)	(373)
Net gain on sales of assets, businesses and investments	(27)	(26)
Adjustment to gain on step acquisition of nonconsolidated affiliate	0	20
Restructuring and asset related charges - net	221	127
Other net loss	115	241
Accounts and notes receivable	239	(1,115)
Inventories	58	(912)
Accounts payable	(450)	1,299
Other assets and liabilities, net	(607)	(1,315)
Cash provided by operating activities - continuing operations	2,003	1,504
Cash provided by operating activities - discontinued operations	253	289
Cash provided by operating activities	2,256	1,793
Capital expenditures	(912)	(868)
Investment in gas field developments	(48)	(46)
Purchases of previously leased assets	(9)	0
Proceeds from sales of property and businesses, net of cash divested	9	14
Investments in and loans to nonconsolidated affiliates	(228)	(2)
Distributions and loan repayments from nonconsolidated affiliates	0	55
Purchases of investments	(393)	(900)
Proceeds from sales and maturities of investments	735	751
Proceeds from interests in trade accounts receivable conduits	0	656
Cash used for investing activities - continuing operations	(846)	(340)
Cash used for investing activities - discontinued operations	(34)	(112)
Cash used for investing activities	(880)	(452)
Changes in short-term notes payable	162	345
Proceeds from issuance of long-term debt	2,010	0
Payments on long-term debt	(4,221)	(568)
Purchases of treasury stock	(305)	0
Proceeds from issuance of parent company stock	34	85
Transaction financing, debt issuance and other costs	(56)	0
Employee taxes paid for share-based payment arrangements	(50)	(70)
Distributions to noncontrolling interests	(7)	(39)
Purchases of noncontrolling interests	(127)	0
Dividends paid to stockholders	(517)	0
Dividends paid to DowDuPont Inc.	(535)	(2,110)
Settlements and transfers related to separation from DowDuPont Inc.	1,963	(215)
Other financing activities, net	0	3
Cash used for financing activities - continuing operations	(1,649)	(2,569)
Cash used for financing activities - discontinued operations	(18)	(43)
Cash used for financing activities	(1,667)	(2,612)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	10	(69)
Decrease in cash, cash equivalents and restricted cash	(281)	(1,340)
Cash, cash equivalents and restricted cash at beginning of period	2,764	6,208
Cash, cash equivalents and restricted cash at end of period	2,483	4,868
Less: Restricted cash and cash equivalents, included in Other current assets	37	45
Cash and cash equivalents at end of period	$ 2,446	$ 4,823