CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 143,081	$ (122,339)	$ (127,597)
OTHER COMPREHENSIVE INCOME, NET OF TAX:
Defined benefit pension plan adjustments	1,509	5,782	3,283
Foreign currency translation adjustments	1,999	(3,875)	835
Unrealized gain in fair value of investments	2,786	2,140	4,131
TOTAL OTHER COMPREHENSIVE INCOME, NET OF TAX	6,294	4,047	8,249
COMPREHENSIVE INCOME (LOSS)	149,375	(118,292)	(119,348)
LESS: COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	64,181	39,630	44,557
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ 85,194	$ (157,922)	$ (163,905)