CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
REVENUE	$ 4,450,832	$ 4,454,662	$ 4,757,208
COST OF OPERATIONS	(4,209,060)	(4,000,209)	(4,302,803)
GROSS PROFIT	241,772	454,453	454,405
General and administrative expenses	(226,916)	(262,577)	(274,928)
Goodwill impairment	(379,863)
INCOME (LOSS) FROM CONSTRUCTION OPERATIONS	(365,007)	191,876	179,477
Other income, net	6,667	4,256	43,882
Interest expense	(67,494)	(63,519)	(69,384)
INCOME (LOSS) BEFORE INCOME TAXES	(425,834)	132,613	153,975
Income tax benefit (expense)	65,609	(34,832)	569
NET INCOME (LOSS)	(360,225)	97,781	154,544
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	27,465	14,345	6,162
NET INCOME (LOSS) ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ (387,690)	$ 83,436	$ 148,382
BASIC EARNINGS (LOSS) PER COMMON SHARE	$ (7.72)	$ 1.67	$ 2.99
DILUTED EARNINGS (LOSS) PER COMMON SHARE	$ (7.72)	$ 1.66	$ 2.92
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING:
BASIC	50,220	49,952	49,647
DILUTED	50,220	50,301	50,759