CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUE	$ 1,123,137	$ 1,199,505	$ 3,271,378	$ 3,564,140
COST OF OPERATIONS	(1,012,013)	(1,081,254)	(2,974,546)	(3,240,332)
GROSS PROFIT	111,124	118,251	296,832	323,808
General and administrative expenses	(63,818)	(69,179)	(195,636)	(203,674)
INCOME FROM CONSTRUCTION OPERATIONS	47,306	49,072	101,196	120,134
Other income, net	1,909	967	3,739	42,373
Interest expense	(16,411)	(15,643)	(47,474)	(53,726)
INCOME BEFORE INCOME TAXES	32,804	34,396	57,461	108,781
Provision for income taxes	(7,368)	(9,096)	(15,071)	(37,084)
NET INCOME	25,436	25,300	42,390	71,697
LESS: NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS	4,164	1,716	8,359	4,253
NET INCOME ATTRIBUTABLE TO TUTOR PERINI CORPORATION	$ 21,272	$ 23,584	$ 34,031	$ 67,444
BASIC EARNINGS PER COMMON SHARE	$ 0.43	$ 0.47	$ 0.68	$ 1.36
DILUTED EARNINGS PER COMMON SHARE	$ 0.42	$ 0.47	$ 0.68	$ 1.33
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING:
BASIC (in shares)	50,018	49,775	49,927	49,602
DILUTED (in shares)	50,375	50,587	50,210	50,768