| Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 | Dec 31,
2024 |
|---|
| Net income | 121 | 87 | 18 | 135 | 106 | 104 | 44 |
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| Depreciation, Depletion and Amortization | 98 | 97 | 97 | 104 | 106 | 113 | 125 |
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| Amortization of debt issuance costs | 2 | 2 | 2 | 4 | 2 | 3 | 2 |
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| Stock based compensation | 14 | 9 | 4 | 5 | 8 | 15 | 15 |
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| Deferred tax (benefit) provision | -4 | 16 | -12 | 20 | 7 | 6 | -20 |
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| Foreign currency transactions | -3 | -1 | 5 | 12 | 8 | -5 | 2 |
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| Reclassification of actuarial (gains)/losses from AOCI | - | - | -10 | -5 | - | 9 | - |
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| Other operating non-cash items, net | -1 | -2 | -0 | 2 | 0 | -1 | -2 |
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| Trade receivables | 40 | -45 | 17 | 68 | 96 | -131 | -14 |
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| Inventories | 31 | -16 | -30 | 95 | 60 | 8 | 20 |
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| Trade payables | 5 | -12 | -19 | 65 | 9 | 2 | -15 |
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| Other provisions | 4 | 10 | -2 | -7 | 4 | 4 | -1 |
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| Income tax liabilities | 5 | -7 | 16 | -6 | 20 | -2 | -18 |
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| Other assets and liabilities, net | 49 | 14 | 2 | 18 | 9 | 11 | 4 |
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| Net cash provided by operating activities | 122 | 232 | 125 | 145 | 81 | 346 | 125 |
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| Acquisition of property, plant and equipment | 116 | 156 | 145 | 215 | 233 | 173 | 207 |
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| Net cash used in investing activities | -88 | -156 | -145 | -215 | -233 | -173 | -207 |
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| Proceeds from long-term debt borrowings | - | - | - | 213 | 48 | 13 | - |
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| Repayments of long-term debt | 8 | 8 | 8 | 213 | 3 | 3 | 4 |
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| Payments for debt issue costs | 1 | 2 | - | - | 2 | 3 | 0 |
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| Cash inflows related to current financial liabilities | 49 | 97 | 206 | 188 | 223 | 284 | 263 |
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| Cash outflows related to current financial liabilities | 26 | 101 | 171 | 113 | 108 | 418 | 138 |
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| Dividends paid to stockholders | 48 | 48 | 12 | - | 5 | 5 | 5 |
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| Repurchases of Common stock | 5 | - | - | - | 4 | 66 | 27 |
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| Other financing activities | - | - | - | -3 | -0 | - | - |
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| Net cash provided by (used in) financing activities | -44 | -69 | 14 | 73 | 149 | -197 | 89 |
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| Increase (decrease) in cash, cash equivalents and restricted cash | -10 | 7 | -6 | 4 | -2 | -24 | 8 |
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| Effect of exchange rate changes on cash | -4 | -0 | 6 | -3 | -3 | 1 | -3 |
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| Cash paid for interest, net | 24 | 20 | 21 | 23 | 34 | 39 | 49 |
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| Cash paid for income taxes | - | 24 | 8 | 38 | 24 | 56 | 47 |
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| Lease liabilities | 29 | - | - | 12 | 26 | 30 | 29 |
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