CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
REVENUE	$ 1,021,751	$ 861,027	$ 1,798,051	$ 1,813,181
COST OF OPERATIONS	(956,790)	(895,250)	(1,757,259)	(1,797,059)
GROSS PROFIT (LOSS)	64,961	(34,223)	40,792	16,122
General and administrative expenses	(62,573)	(56,331)	(120,349)	(116,583)
INCOME (LOSS) FROM CONSTRUCTION OPERATIONS	2,388	(90,554)	(79,557)	(100,461)
Other income, net	3,058	1,020	9,475	4,717
Interest expense	(22,016)	(16,204)	(43,529)	(32,696)
LOSS BEFORE INCOME TAXES	(16,570)	(105,738)	(113,611)	(128,440)
Income tax (expense) benefit	(194)	43,718	47,918	47,607
NET LOSS	(16,764)	(62,020)	(65,693)	(80,833)
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	20,770	983	21,037	3,804
NET LOSS ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ (37,534)	$ (63,003)	$ (86,730)	$ (84,637)
BASIC LOSS PER COMMON SHARE (in dollars per share)	$ (0.72)	$ (1.23)	$ (1.68)	$ (1.65)
DILUTED LOSS PER COMMON SHARE (in dollars per share)	$ (0.72)	$ (1.23)	$ (1.68)	$ (1.65)
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	51,803	51,276	51,678	51,192
DILUTED (in shares)	51,803	51,276	51,678	51,192