CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
REVENUE	$ 4,641,830	$ 5,318,763	$ 4,450,832
COST OF OPERATIONS	(4,175,439)	(4,832,610)	(4,209,060)
GROSS PROFIT	466,391	486,153	241,772
General and administrative expenses	(239,587)	(223,809)	(226,916)
Goodwill impairment	0	0	(379,863)
INCOME (LOSS) FROM CONSTRUCTION OPERATIONS	226,804	262,344	(365,007)
Other income (expense)	2,004	(11,853)	6,667
Interest expense	(69,026)	(76,212)	(67,494)
INCOME (LOSS) BEFORE INCOME TAXES	159,782	174,279	(425,834)
Income tax (expense) benefit	(25,632)	(21,942)	65,609
NET INCOME (LOSS)	134,150	152,337	(360,225)
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	42,225	43,943	27,465
NET INCOME (LOSS) ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ 91,925	$ 108,394	$ (387,690)
BASIC EARNINGS (LOSS) PER COMMON SHARE (in dollars per share)	$ 1.80	$ 2.14	$ (7.72)
DILUTED EARNINGS (LOSS) PER COMMON SHARE (in dollars per share)	$ 1.79	$ 2.12	$ (7.72)
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	51,017	50,656	50,220
Diluted (in shares)	51,369	51,077	50,220