Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income (loss) attributable to Tutor Perini Corporation	$ 15,760	$ (49,196)
Weighted-average common shares outstanding, basic (in shares)	52,092	51,551
Effect of dilutive RSUs and stock options (in shares)	423	0
Weighted-average common shares outstanding, diluted (in shares)	52,515	51,551
Basic (in dollars per share)	$ 0.30	$ (0.95)
Diluted (in dollars per share)	$ 0.30	$ (0.95)
Anti-dilutive securities not included above (in shares)	1,421	2,857