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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of restricted stock activity | The activity for equity awards held by Arcosa employees for the year ended December 31, 2025 was as follows:
| Arcosa Equity Awards Held by Arcosa Employees |  | Trinity Equity Awards Held by Arcosa Employees |  | Weighted Average Grant-Date Fair Value per Award
Equity awards outstanding at December 31, 2024 | 768,088 |  |  | 203,877 |  |  | $ | 52.37 |
Granted | 375,342 |  |  | — |  |  | 82.35 |
Vested | (423,747) |  |  | (22,380) |  |  | 58.20 |
Forfeited | (21,858) |  |  | (3,657) |  |  | 67.22 |
Equity awards outstanding at December 31, 2025 | 697,825 |  |  | 177,840 |  |  | $ | 63.95 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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