Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	$ 1,389,707	$ 1,646,521	$ 1,441,984	$ 1,673,720
Net income (loss)	(16,764)	(62,020)	(65,693)	(80,833)
Other comprehensive income (loss)	232	(2,991)	2,112	(6,480)
Share-based compensation	1,635	3,278	3,030	5,002
Issuance of common stock, net	141	158	18	76
Contributions from noncontrolling interests			2,000	961
Distributions to noncontrolling interests	(6,750)	(17,000)	(15,250)	(24,500)
Balance at the end of the period	1,368,201	1,567,946	1,368,201	1,567,946
Common Stock
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	51,645	51,200	51,521	51,096
Issuance of common stock, net	325	158	449	262
Balance at the end of the period	51,970	51,358	51,970	51,358
Additional Paid-in Capital
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	1,142,081	1,134,688	1,140,933	1,133,150
Share-based compensation	1,635	3,278	3,030	5,002
Issuance of common stock, net	(184)		(431)	(186)
Balance at the end of the period	1,143,532	1,137,966	1,143,532	1,137,966
Retained Earnings
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	255,105	492,676	304,301	514,310
Net income (loss)	(37,534)	(63,003)	(86,730)	(84,637)
Balance at the end of the period	217,571	429,673	217,571	429,673
Accumulated Other Comprehensive Loss
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	(45,310)	(46,745)	(47,037)	(43,635)
Other comprehensive income (loss)	(169)	(2,218)	1,558	(5,328)
Balance at the end of the period	(45,479)	(48,963)	(45,479)	(48,963)
Noncontrolling Interests
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	(13,814)	14,702	(7,734)	18,799
Net income (loss)	20,770	983	21,037	3,804
Other comprehensive income (loss)	401	(773)	554	(1,152)
Contributions from noncontrolling interests			2,000	961
Distributions to noncontrolling interests	(6,750)	(17,000)	(15,250)	(24,500)
Balance at the end of the period	$ 607	$ (2,088)	$ 607	$ (2,088)