| Dec 31,
2017 | Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2023 | Dec 31,
2024 |
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| Profit (loss) | 263 | -171 | -316 | -728 | -43 | 164 | 355 |
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| Depreciation and amortization expenses | - | - | - | - | - | 242 | 244 |
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| Realization of government grants | - | -4 | -2 | -5 | -3 | - | - |
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| Realization of contribution from suppliers | - | -22 | -22 | -8 | -10 | -30 | -30 |
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| Losses (reversal) of impairment losses of inventories | - | - | - | - | - | -5 | 7 |
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| Adjustment to fair value - Financial investments | - | - | - | - | - | -0 | 19 |
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| Expected credit losses (reversal) | - | - | - | - | - | -10 | 21 |
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| (Gain) loss on disposal of fixed assets and investments | 19 | 20 | 29 | 15 | 32 | -29 | 6 |
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| Income tax and social contribution | - | - | - | - | - | -44 | 202 |
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| Accrued interest | -29 | -6 | 2 | 25 | 20 | 190 | 175 |
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| Interest on marketable securities, net | -24 | -34 | -31 | -0 | -2 | -7 | -18 |
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| Share of (profit) loss of investments accounted for under the equity method | 1 | -0 | -0 | 3 | 1 | 10 | -4 |
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| Foreign exchange (gain) loss, net | 6 | 21 | -10 | 77 | -21 | 7 | 9 |
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| Other provisions | - | 10 | 20 | 24 | 32 | -7 | 55 |
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| Other | -4 | -7 | -4 | -3 | -1 | 5 | 5 |
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| Financial investments | -245 | 791 | 508 | -513 | -42 | 23 | -118 |
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| Derivative financial instruments | -2 | 24 | 4 | -2 | 5 | 21 | -41 |
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| Accounts receivable | -83 | -16 | 205 | 43 | 14 | -5 | -159 |
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| Contract assets | - | 104 | -152 | 34 | -119 | -5 | -114 |
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| Customer financing | 21 | 5 | 1 | -38 | 11 | 7 | 25 |
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| Inventories | 405 | -282 | 147 | -35 | 474 | -287 | -370 |
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| Other assets | 249 | 44 | 13 | -72 | -39 | -112 | -49 |
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| Adjustments for increase (decrease) in trade and other payables | - | - | - | - | - | 50 | 205 |
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| Other payables | -20 | -16 | -29 | -49 | -35 | 72 | 24 |
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| Contract liabilities | - | 101 | 201 | -134 | 217 | 577 | 748 |
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| Taxes and payroll charges payable | 21 | 31 | 3 | -38 | 2 | 99 | -58 |
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| Unearned income | - | - | - | - | 14 | 3 | 3 |
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| Income tax and social contribution paid | - | - | - | - | - | -121 | -101 |
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| Interest paid | - | - | - | - | - | -173 | -176 |
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| NET CASH GENERATED IN OPERATING ACTIVITIES | 757 | 1,108 | 894 | -1,290 | 515 | 617 | 871 |
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| Acquisition of property, plant and equipment | 238 | 154 | 285 | 102 | 102 | 239 | 200 |
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| Proceeds from sale of property, plant and equipment | 19 | 0 | 0 | 11 | 4 | 19 | 12 |
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| Additions to intangible assets | 471 | 290 | 283 | 121 | 167 | 192 | 266 |
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| Additions to investments in subsidiaries and affiliates, net of cash acquired | - | 2 | 3 | 2 | 1 | 24 | 18 |
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| Investment sale | - | - | - | - | - | 41 | - |
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| Proceeds from sale of financial investments | - | - | - | - | - | - | 50 |
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| Acquisition of financial investments | - | - | - | - | - | - | 238 |
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| Proceeds from disposal of loan granted | - | - | - | - | - | - | 61 |
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| Dividends received | 0 | 0 | 0 | 1 | 2 | 6 | 1 |
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| NET CASH USED IN INVESTING ACTIVITIES | -1,097 | -523 | 408 | -105 | -132 | -448 | -600 |
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| Proceeds from loans and financing | 973 | 124 | 401 | 2,079 | 60 | 2,001 | 775 |
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| Repayment of loans and financing | 540 | 596 | 646 | 1,062 | 478 | 2,332 | 1,155 |
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| Capital increase | - | - | - | - | - | 10 | - |
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| Dividends and interest on own capital | 54 | 41 | 2 | - | - | 13 | - |
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| Receipt in the offering of subsidiary shares | - | - | - | - | - | - | 66 |
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| Costs in the offering of subsidiary shares | - | - | - | - | - | - | 2 |
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| Lease payments | - | - | 12 | 9 | 10 | 14 | 19 |
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| NET CASH USED IN FINANCING ACTIVITIES | 370 | -503 | -257 | 1,009 | -431 | -349 | -336 |
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| DECREASE IN CASH AND CASH EQUIVALENTS | 30 | 81 | 1,045 | -387 | -47 | -179 | -64 |
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| Effect of exchange rate changes on cash and cash equivalents | -1 | -71 | -18 | -38 | 2 | -10 | 1 |
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