Contingencies and Commitments (Details) $ in Thousands	1 Months Ended										3 Months Ended		12 Months Ended
	Mar. 31, 2015 USD ($)	Jan. 31, 2015 USD ($)	Oct. 31, 2014 USD ($)	Oct. 31, 2013 USD ($)	Aug. 31, 2013 USD ($)	Apr. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2011 USD ($)	Apr. 30, 2010 USD ($)	Jun. 30, 2003 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2003 item	Dec. 31, 2015 USD ($) ft²	Dec. 31, 2014 USD ($)	Dec. 31, 2013 claim	Dec. 31, 2012 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2009 property	Mar. 09, 2015 USD ($)	May. 31, 2012 USD ($)	Sep. 30, 2011 USD ($)	Jul. 31, 2010 USD ($)	May. 31, 2010 USD ($)	Mar. 31, 2010 USD ($)	Jun. 30, 2009 USD ($)	Feb. 28, 2006 USD ($)
Contingencies and Commitments
Contract receivables													$ 1,473,615	$ 1,479,504
Tutor-Saliba-Perini Joint Venture vs. Los Angeles MTA Matter
Contingencies and Commitments
Judgment in favor of TSP																	$ 3,000
Tunnel handrail verdict against TSP																	500
Settlement on judgment													$ 2,100
Settlement receipt		$ 3,800
Long Island Expressway/Cross Island Parkway Matter
Contingencies and Commitments
Estimated value of project completed in Feb. 2006																										$ 130,000
Value of claim filed								$ 53,800
Amount receivable as per final agreement																					$ 500
Value of counterclaim filed																				$ 151,000
Fontainebleau Matter
Contingencies and Commitments
Number of rooms in hotel/casino complex | property																		3,800
Total outstanding liens on property, including subcontractors' liens																									$ 44,000
Amount of court order in favor of plaintiff																							$ 45,000
Amount set aside from approved sale for distribution to satisfy creditor claims																						$ 125,000
Estimated sustainable lien amount																						$ 350,000
Honeywell Street/Queens Boulevard Bridges Matter
Contingencies and Commitments
Value of claim filed										$ 8,800
Value of counterclaim filed																								$ 74,600
Westgate Planet Hollywood Matter
Contingencies and Commitments
Settlement on judgment														19,700
Value of counterclaim filed																	45,000
Total outstanding liens on property, including subcontractors' liens																	23,200
Settlement receipt														600
Value of mechanic's lien release bond														22,300			22,300
Value of cross complaint filed																	$ 51,000
Damages awarded to WPH which are anticipated to be paid by the OCIP carrier														3,100
Additional supersedeas bond														1,700
Total value of security														$ 24,000
Brightwater Matter [Member]
Contingencies and Commitments
Ownership percentage in joint venture														20.00%
Value of claim filed									$ 74,000
Value of counterclaim filed									$ 75,000
Verdict awarded by jury																$ 155,800
Damages awarded																$ 26,300
Attorney's fees to be paid by VPFK						$ 14,700
Appealed verdict award																			$ 17,000
Pre-tax charge											$ 23,900
156 Stations Matter
Contingencies and Commitments
Settlement on judgment							$ 11,900
Settlement receipt							$ 8,500
Number of stations for the New York City Transit Authority | item												156
U.S. Department of Commerce, National Oceanic and Atmospheric Administration Matter [Member]
Contingencies and Commitments
Settlement on judgment	$ 1,000
Value of claim filed			$ 700	$ 2,600	$ 26,800
Square footage of facility | ft²													287,000
Certified claims filed | claim															3
Total awards denied	$ 29,500