Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	$ 1,673,720	$ 1,542,945
Net income (loss)	(18,813)	25,105
Other comprehensive income (loss)	(3,489)	(319)
Share-based compensation	1,724	1,586
Issuance of common stock, net	(82)	(1,236)
Contributions from noncontrolling interests	961	4,000
Distributions to noncontrolling interests	(7,500)
Balance at the end of the period	1,646,521	1,572,081
Common Stock
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	51,096	50,827
Issuance of common stock, net	104	111
Balance at the end of the period	51,200	50,938
Additional Paid-in Capital
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	1,133,150	1,127,385
Share-based compensation	1,724	1,586
Issuance of common stock, net	(186)	(1,347)
Balance at the end of the period	1,134,688	1,127,624
Retained Earnings
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	514,310	422,385
Net income (loss)	(21,634)	16,034
Balance at the end of the period	492,676	438,419
Accumulated Other Comprehensive Loss
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	(43,635)	(46,741)
Other comprehensive income (loss)	(3,110)	(615)
Balance at the end of the period	(46,745)	(47,356)
Noncontrolling Interests
Attributable to Tutor Perini Corporation:
Balance at the beginning of the period	18,799	(10,911)
Net income (loss)	2,821	9,071
Other comprehensive income (loss)	(379)	296
Contributions from noncontrolling interests	961	4,000
Distributions to noncontrolling interests	(7,500)
Balance at the end of the period	$ 14,702	$ 2,456