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Other Comprehensive Income (Loss) (Schedule Of Components Of Other Comprehensive Income (Loss) And Related Tax Effects) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Total other comprehensive income (loss), Before-Tax Amount | $ 222 | $ (3,444) | $ 2,662 | $ (8,063)
Total other comprehensive income (loss), Tax (Expense) Benefit | 10 | 453 | (550) | 1,583
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | 232 | (2,991) | 2,112 | (6,480)
Defined benefit pension plan adjustments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Total other comprehensive income (loss), Before-Tax Amount | 411 | 638 | 826 | 1,277
Total other comprehensive income (loss), Tax (Expense) Benefit | (115) | (181) | (229) | (362)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | 296 | 457 | 597 | 915
Foreign currency translation adjustments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Total other comprehensive income (loss), Before-Tax Amount | 562 | (1,698) | 902 | (1,442)
Total other comprehensive income (loss), Tax (Expense) Benefit | (34) | 308 | (124) | 309
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | 528 | (1,390) | 778 | (1,133)
Unrealized gain (loss) in fair value of investments |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Total other comprehensive income (loss), Before-Tax Amount | (751) | (2,384) | 934 | (7,898)
Total other comprehensive income (loss), Tax (Expense) Benefit | 159 | 326 | (197) | 1,636
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | (592) | (2,058) | 737 | (6,262)
Less: Other comprehensive income (loss) attributable to noncontrolling interests |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Total other comprehensive income (loss), Before-Tax Amount | 401 | (773) | 554 | (1,152)
Total other comprehensive income (loss), Tax (Expense) Benefit | 0 | 0 | 0 | 0
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | 401 | (773) | 554 | (1,152)
Total other comprehensive income (loss) attributable to Tutor Perini Corporation |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Total other comprehensive income (loss), Before-Tax Amount | (179) | (2,671) | 2,108 | (6,911)
Total other comprehensive income (loss), Tax (Expense) Benefit | 10 | 453 | (550) | 1,583
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX | $ (169) | $ (2,218) | $ 1,558 | $ (5,328)

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