| Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Cash and cash equivalents | 122 | 329 | 72 | 68 | 64 |
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| Accounts receivable | 196 | 242 | 296 | 303 | 323 |
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| Allowance for doubtful accounts | 6 | 7 | 9 | 9 | 8 |
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| Prepaid Taxes | 4 | 17 | 18 | 13 | 13 |
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| Prepaid and other current assets | 25 | 34 | 39 | 45 | 51 |
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| Total current assets | 340 | 616 | 416 | 420 | 442 |
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| Property and equipment, net | 28 | 32 | 32 | 40 | 34 |
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| Operating lease right-of-use assets | 46 | 51 | 40 | 38 | 32 |
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| Intangible assets, net | 46 | 246 | 292 | 249 | 214 |
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| Goodwill | 581 | 1,588 | 2,237 | 2,269 | 2,367 |
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| Investments | 6 | 6 | 22 | 23 | 26 |
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| Deferred income taxes | 39 | 71 | 53 | 213 | 198 |
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| Other assets | 40 | 49 | 72 | 67 | 86 |
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| Total assets | 1,126 | 2,659 | 3,165 | 3,320 | 3,400 |
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| Accounts payable | 16 | 16 | 15 | 18 | 16 |
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| Accrued Liabilities, Current | 227 | 324 | 362 | 457 | 536 |
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| Deferred revenues | 202 | 225 | 227 | 254 | 246 |
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| Operating lease liabilities | 17 | 17 | 15 | 12 | 12 |
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| Income taxes payable | 3 | 7 | 5 | 9 | 4 |
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| Current portion of long-term debt | - | 5 | 5 | 10 | - |
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| Total current liabilities | 466 | 594 | 628 | 760 | 814 |
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| Long-term debt | 246 | 1,431 | 1,776 | 1,518 | 1,388 |
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| Deferred compensation plan liabilities | - | 95 | 77 | 88 | 97 |
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| Long-term operating lease liabilities | 32 | 35 | 28 | 31 | 27 |
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| Deferred revenues | 7 | 8 | 16 | 16 | 17 |
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| Deferred income taxes | 11 | 65 | 51 | 10 | 9 |
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| Income taxes payable | 8 | 8 | 8 | 7 | 4 |
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| Other liabilities | 15 | 14 | 7 | 5 | 4 |
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| Total liabilities | 784 | 2,250 | 2,592 | 2,436 | 2,359 |
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| Class A Common Stock | - | - | - | 0 | 0 |
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| Class B Common Stock | - | - | - | 3 | 3 |
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| Common stock | 3 | 3 | 3 | - | - |
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| Additional paid-in capital | 741 | 938 | 1,030 | 1,127 | 1,218 |
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| Accumulated other comprehensive loss | -26 | -92 | -90 | -85 | -104 |
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| Accumulated deficit | -376 | -440 | -371 | -162 | -76 |
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| Total Bentley Systems stockholders’ equity | 342 | 409 | 573 | 884 | 1,041 |
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| Noncontrolling interest | - | - | 1 | 1 | 0 |
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| Total equity | - | - | 573 | 884 | 1,041 |
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| Total liabilities and equity | 1,126 | 2,659 | 3,165 | 3,320 | 3,400 |
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