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Share-Based Compensation (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares authorized for grant (in shares) | 1,904,324 |  |  |
Vested and expected to vest, outstanding, (in shares) | 676,633 |  |  |
Total granted and outstanding (in shares) | 676,633 | 1,435,265 | 1,625,265 | 2,167,765
Aggregate intrinsic value | $ 600,000 |  |  |
Weighted average remaining contractual term of outstanding stock options | 2 years 6 months |  |  |
Stock options exercised, intrinsic value | $ 3,100,000 |  |  |
Share-based compensation expense | 40,356,000 | $ 12,259,000 | $ 9,065,000 |
Share based compensation, tax benefits | $ 700,000 | 300,000 | 900,000 |
Reduction in incremental cost |  | 500,000 |  |
Modification of fair value, incremental cost |  | 400,000 |  |
Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation, achievement of target level performance criteria, payout range, percent |  |  |  |
Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation, achievement of target level performance criteria, payout range, percent | 250.00% |  |  |
Employee |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation expense | $ 38,800,000 | 10,500,000 | 7,400,000 |
Non-employee Directors |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation expense | $ 1,500,000 | $ 1,700,000 | 1,600,000 |
Restricted Stock Units, guaranteed minimum payouts |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock units with guaranteed minimum payouts outstanding (in shares) | 0 | 50,000 |  |
Stock units with guaranteed minimum payouts outstanding, weighted-average grant date fair value (in dollars per share) |  | $ 26.32 |  |
CPSUs, RSUs with guaranteed minimum payouts and CRSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock units with guaranteed minimum payouts outstanding, recognized liabilities | $ 34,600,000 | $ 4,900,000 |  |
Paid to settle share-based awards | 4,000,000.0 | 2,800,000 | 3,600,000 |
Unrestricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Fair value of unrestricted stock units issued | $ 1,500,000 | $ 1,700,000 | $ 1,800,000 |
RSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock units with guaranteed minimum payouts outstanding (in shares) | 628,716 | 1,247,629 | 1,106,670 | 1,188,851
Stock units with guaranteed minimum payouts outstanding, weighted-average grant date fair value (in dollars per share) | $ 10.57 | $ 12.30 | $ 15.66 | $ 18.98
Fair value of restricted stock units that vested during period | $ 10,000,000.0 | $ 4,100,000 | $ 5,700,000 |
Unamortized share-based compensation expense | $ 2,500,000 |  |  |
Weighted average period over which unrecognized compensation cost is expected to be recognized | 1 year 2 months 12 days |  |  |
CPSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock units with guaranteed minimum payouts outstanding (in shares) | 1,514,095 | 1,184,683 | 814,620 | 398,852
Stock units with guaranteed minimum payouts outstanding, weighted-average grant date fair value (in dollars per share) | $ 14.34 | $ 11.86 | $ 16.61 | $ 20.39
Fair value of restricted stock units that vested during period | $ 5,600,000 | $ 1,100,000 | $ 0 |
Unamortized share-based compensation expense | $ 24,400,000 |  |  |
Weighted average period over which unrecognized compensation cost is expected to be recognized | 1 year 8 months 12 days |  |  |
CRSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock units with guaranteed minimum payouts outstanding (in shares) | 786,775 | 284,379 | 100,000 | 0
Stock units with guaranteed minimum payouts outstanding, weighted-average grant date fair value (in dollars per share) | $ 12.11 | $ 7.87 | $ 6.99 | $ 0
Fair value of restricted stock units that vested during period | $ 3,000,000.0 | $ 200,000 | $ 0 |
Unamortized share-based compensation expense | $ 13,800,000 |  |  |
Weighted average period over which unrecognized compensation cost is expected to be recognized | 2 years |  |  |
Amended and Restated Tutor Perini Corporation Long-Term Incentive Plan (“Incentive Plan”) | Restricted Stock Units and Stock Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vested and expected to vest, outstanding, (in shares) | 1,305,349 |  |  |

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