CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
NET LOSS	$ (16,764)	$ (62,020)	$ (65,693)	$ (80,833)
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Defined benefit pension plan adjustments	296	457	597	915
Foreign currency translation adjustments	528	(1,390)	778	(1,133)
Unrealized gain (loss) in fair value of investments	(592)	(2,058)	737	(6,262)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	232	(2,991)	2,112	(6,480)
COMPREHENSIVE LOSS	(16,532)	(65,011)	(63,581)	(87,313)
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	21,171	210	21,591	2,652
COMPREHENSIVE LOSS ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ (37,703)	$ (65,221)	$ (85,172)	$ (89,965)