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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Operating Activities      
Net Income Attributable to Union Carbide Corporation $ 205 $ 89 $ 808
Adjustments to reconcile net income (loss) to net cash provided by operating activities:      
Depreciation and amortization 200 190 184
Provision (credit) for deferred income tax 414 (297) (44)
Earnings of nonconsolidated affiliates less than (in excess of) dividends received 0 (1) (1)
Net gains on sales of assets (26) (51) (7)
Gain (Loss) on Sale of Equity Investments (4) 0 0
Nonmonetary Transaction, Gain (Loss) Recognized on Transfer 0 0 (23)
Asbestos-related charge 0 (1,113) 0
Restructuring charges (credits) 74 4 19
Payment for Pension and Other Postretirement Benefits 162 52 2
Other, net 0 (1) 1
Pension and Other Postretirement Benefits Cost (Reversal of Cost) 28 27 68
Changes in assets and liabilities, net of effects of divested companies:      
Accounts and notes receivable 7 (7) 39
Related company receivables 44 132 191
Inventories 29 (4) 62
Accounts payable 36 18 (22)
Related company payables 166 45 (413)
Asbestos-related payments (121) (61) (76)
Other assets and liabilities (112) (457) 569
Cash provided by operating activities 778 687 1,353
Investing Activities      
Capital expenditures (223) (267) (270)
Proceeds from Sale of Equity Method Investments 22 0 0
Change in noncurrent receivable from related company 3 5 69
Proceeds from sales of assets 18 60 40
Cash acquired in ownership transfer of property 0 0 5
Purchases of investments (1) (1) (27)
Proceeds from sales of investments 9 5 1
Cash provided by (used in) investing activities (172) (198) (182)
Financing Activities      
Dividends paid to stockholder (603) (500) (1,170)
Payments on long-term debt (1) (1) (1)
Cash used in financing activities (604) (501) (1,171)
Summary      
Increase (decrease) in cash and cash equivalents 2 (12) 0
Cash and cash equivalents at beginning of year 11 23 23
Cash and cash equivalents at end of period 13 11 23
Supplemental Cash Flow Information [Abstract]      
Interest Paid, Net 37 38 39
Income Taxes Paid, Net $ 254 $ 697 $ (125)