| Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | Dec 31, 2014 | Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Net income | 295 | 222 | -127 | 80 | -171 | -3 | 303 | 301 | 78 | 89 | 198 | 136 | 3 | 161 |
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| Depreciation and amortization | 64 | 69 | 75 | 78 | 70 | 68 | 59 | 58 | 57 | 69 | 59 | 59 | 54 | 67 |
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| Gain on remeasurement of investment in TiO2 manufacturing joint venture | - | - | - | - | - | - | - | - | - | - | - | - | - | 65 |
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| Premium on issuance of senior secured notes | - | - | - | - | - | - | - | - | - | - | - | - | - | 6 |
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| Deferred income taxes | - | - | - | - | - | -39 | -293 | -73 | 7 | -7 | 12 | 1 | -48 | 44 |
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| Benefit plan expense greater (less) than cash funding | - | - | - | -3 | 3 | 5 | 11 | 6 | 9 | 15 | 11 | 9 | -6 | -8 |
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| Loss on pension plan termination | - | - | - | - | - | - | - | - | - | - | - | - | 6 | - |
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| Fixed asset impairment | - | - | - | - | - | - | 171 | - | - | - | - | 16 | 4 | - |
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| Noncash interest expense | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 |
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| Equity Method Investment Distributions From Contributions To Net | - | - | 11 | 11 | 7 | 4 | -6 | 4 | -9 | -13 | 4 | -10 | 3 | -3 |
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| Gain from sale of land | -1 | 2 | -0 | -1 | -1 | -0 | -0 | -0 | -0 | -0 | - | - | - | 1 |
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| Other, net | -1 | 3 | -6 | -8 | -8 | -2 | - | -14 | -8 | -8 | -2 | -10 | -3 | 0 |
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| Accounts and other receivables, net | 48 | 7 | -23 | 27 | -22 | 47 | 48 | 11 | -9 | 3 | 65 | -81 | 45 | 17 |
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| Inventories, net | 184 | 185 | -220 | 55 | 8 | -40 | 6 | 137 | 9 | -13 | -58 | 204 | -57 | 41 |
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| Land held for development, net | - | - | - | 7 | -7 | -18 | -7 | -8 | -1 | -17 | -50 | -21 | -1 | -5 |
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| Accounts payable and accrued liabilities | 96 | -44 | 73 | -26 | -14 | -0 | 13 | 66 | -15 | -33 | 154 | 4 | 11 | -60 |
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| Income taxes | 20 | -20 | -10 | 5 | -1 | 4 | 20 | -18 | -1 | 7 | -2 | -0 | 9 | 9 |
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| Accounts with affiliates | 37 | -65 | 19 | 13 | -17 | -14 | -35 | -19 | 1 | 4 | 24 | -9 | 28 | 7 |
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| Other noncurrent assets | 3 | 12 | 2 | -3 | 3 | -0 | 1 | -3 | 6 | 50 | 16 | 3 | 10 | 30 |
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| Other noncurrent liabilities | -13 | 12 | 0 | 5 | 3 | -4 | 4 | 13 | 54 | 54 | 54 | -84 | -19 | -15 |
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| Other, net | 5 | 2 | -18 | 3 | 6 | -13 | 15 | 5 | -0 | 7 | 23 | 13 | -6 | 6 |
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| Net cash provided by operating activities | 292 | 72 | 117 | 67 | - | - | - | 166 | 177 | 152 | 460 | 35 | 4 | 44 |
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| Capital expenditures | 146 | 99 | 75 | 73 | 55 | 59 | 71 | 61 | 60 | 66 | 64 | 68 | 49 | 31 |
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| Acquisition of remaining TiO2 manufacturing joint venture interest, net of cash acquired | 5 | - | 5 | - | - | - | - | - | - | - | - | - | - | 157 |
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| Cash, cash equivalents and restricted cash of BWC | - | - | - | - | - | - | - | - | - | - | - | 9 | - | -3 |
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| Purchases of marketable securities | 7 | - | - | 16 | 14 | 11 | 10 | 4 | 5 | 3 | 4 | 74 | 66 | 3 |
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| Proceeds from disposal of marketable securities | 5 | - | - | - | - | - | - | 18 | 4 | 4 | 5 | 3 | 86 | 57 |
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| Proceeds from land sales | - | - | - | - | - | - | - | 20 | 5 | - | 23 | - | 2 | 6 |
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| Other, net | 8 | -7 | 0 | -0 | -0 | 1 | 0 | - | -3 | -3 | -2 | -0 | -0 | -0 |
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| Net cash used in investing activities | -221 | 101 | -56 | -55 | - | - | - | -57 | -51 | -57 | -37 | -147 | -29 | -125 |
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| Borrowings | - | - | - | - | - | - | - | - | - | - | - | - | - | 159 |
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| Payments | - | - | - | - | - | - | - | - | - | - | - | - | - | 149 |
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| Payments on long-term debt | - | - | - | - | 53 | 309 | 600 | 13 | 11 | 59 | 102 | 62 | 30 | 102 |
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| Kronos term loan from Contran | - | - | - | - | - | - | - | - | - | - | - | - | - | 54 |
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| Proceeds from Secured Notes Payable | - | - | - | - | - | - | - | - | - | - | - | - | - | 80 |
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| Deferred financing fees | 0 | 7 | - | 6 | - | - | 9 | - | - | - | 2 | - | - | 9 |
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| Valhi cash dividends paid | 54 | 65 | 68 | 37 | 27 | 27 | 27 | 27 | 27 | 14 | 9 | 9 | 9 | 9 |
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| Distributions to noncontrolling interest in subsidiaries | 29 | 19 | 18 | 19 | 15 | 22 | 18 | 20 | 38 | 49 | 74 | 39 | 34 | 25 |
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| Subsidiary treasury stock acquired | 10 | - | - | - | - | - | - | - | 3 | 1 | 2 | 4 | 3 | - |
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| Other, net | - | - | - | - | - | - | - | - | - | - | - | -0 | -0 | - |
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| Net cash used in financing activities | -300 | 96 | -286 | 110 | - | - | - | -60 | -64 | -122 | -189 | -114 | -76 | -2 |
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| Operating, investing and financing activities | - | - | - | - | - | - | 279 | 49 | 62 | -27 | 233 | -226 | -101 | -83 |
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| Effect of exchange rates on cash | - | - | - | - | - | - | - | -14 | -2 | 14 | -11 | -5 | 1 | -0 |
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| Interest Paid Net | 67 | 66 | 55 | 54 | 57 | 61 | 59 | 54 | 38 | 33 | 29 | 26 | 27 | 45 |
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| Income taxes, net | 74 | 71 | 16 | 33 | 10 | 20 | 62 | 69 | 33 | 24 | 66 | 44 | 27 | 42 |
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| Change in accruals for capital expenditures | 24 | 16 | 5 | - | - | - | - | 5 | 9 | 6 | 5 | 7 | 1 | 7 |
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