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Other Comprehensive Income (Loss) (Schedule of Changes in AOCI Balances by Component (After-Tax)) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period | $ 1,291,588 |
Balance at the beginning of the period, noncontrolling interests | (7,677) |
Other comprehensive income (loss) before reclassifications | (741) | $ 1,402
Amounts reclassified from AOCI | 366 | 325
Total other comprehensive income | (375) | 1,727
Other comprehensive income | (467) | 153
Balance at the end of the period, noncontrolling interests | (3,802) |
Balance at the end of the period | 1,307,036 |
Accumulated Other Comprehensive Income (Loss) |  |
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period | (39,787) | (47,037)
Balance at the end of the period | (40,162) | (45,310)
Defined Benefit Pension Plan |  |
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period | (29,354) | (32,637)
Other comprehensive income (loss) before reclassifications | 0 | 0
Amounts reclassified from AOCI | 321 | 301
Total other comprehensive income | 321 | 301
Balance at the end of the period | (29,033) | (32,336)
Foreign Currency Translation |  |
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period | (6,893) | (7,241)
Other comprehensive income (loss) before reclassifications | (428) | 231
Amounts reclassified from AOCI | 0 | 0
Total other comprehensive income | (428) | 231
Balance at the end of the period | (7,321) | (7,010)
Unrealized Gain (Loss) in Fair Value of Investments, Net |  |
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period | (3,540) | (7,159)
Other comprehensive income (loss) before reclassifications | (313) | 1,171
Amounts reclassified from AOCI | 45 | 24
Total other comprehensive income | (268) | 1,195
Balance at the end of the period | (3,808) | (5,964)
AOCI Attributable to Noncontrolling Interest |  |
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period, noncontrolling interests | (731) | (1,730)
Balance at the end of the period, noncontrolling interests | (1,198) | (1,577)
Defined Benefit Pension Plan |  |
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period, noncontrolling interests | 0 | 0
Other comprehensive income | 0 | 0
Balance at the end of the period, noncontrolling interests | 0 | 0
Foreign Currency Translation |  |
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period, noncontrolling interests | (312) | (799)
Other comprehensive income | (499) | 19
Balance at the end of the period, noncontrolling interests | (811) | (780)
Unrealized Gain (Loss) in Fair Value of Investments, Net |  |
Attributable to Tutor Perini Corporation: |  |
Balance at the beginning of the period, noncontrolling interests | (419) | (931)
Other comprehensive income | 32 | 134
Balance at the end of the period, noncontrolling interests | $ (387) | $ (797)

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