Separate Financial Information of Subsidiary Guarantors of Indebtedness, Condensed Consolidating Statement of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
Revenues	$ 955,233	$ 992,928
Cost of Operations	849,886	892,571
Gross profit	105,347	100,357
General and Administrative Expenses	63,850	64,278
INCOME FROM CONSTRUCTION OPERATIONS	41,497	36,079
Other (Expense) Income, net	(3,373)	(827)
Interest Expense	(10,831)	(11,336)
Income before income taxes	27,293	23,916
Credit (Provision) for Income Taxes	(11,354)	(9,116)
NET INCOME	15,939	14,800
Other Comprehensive Income:
Foreign currency translation	(286)	(186)
Change in fair value of investments	181	101
Change in fair value of interest rate swap	81	168
NET OTHER COMPREHENSIVE INCOME (LOSS)	(24)	83
TOTAL COMPREHENSIVE INCOME	15,915	14,883
Eliminations
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
Revenues	(35,250)	(68,262)
Cost of Operations	(35,250)	(68,262)
Equity in Earnings of Subsidiaries	(15,281)	(24,356)
Income before income taxes	(15,281)	(24,356)
NET INCOME	(15,281)	(24,356)
Other Comprehensive Income:
Other Comprehensive Income of Subsidiaries	105	85
NET OTHER COMPREHENSIVE INCOME (LOSS)	105	85
TOTAL COMPREHENSIVE INCOME	(15,176)	(24,271)
Tutor Perini Corporation | Reportable legal entity
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
Revenues	226,847	139,777
Cost of Operations	193,814	125,089
Gross profit	33,033	14,688
General and Administrative Expenses	17,795	18,777
INCOME FROM CONSTRUCTION OPERATIONS	15,238	(4,089)
Equity in Earnings of Subsidiaries	15,281	24,356
Other (Expense) Income, net	(4,095)	(809)
Interest Expense	(10,017)	(10,545)
Income before income taxes	16,407	8,913
Credit (Provision) for Income Taxes	(468)	5,887
NET INCOME	15,939	14,800
Other Comprehensive Income:
Other Comprehensive Income of Subsidiaries	(105)	(85)
Change in fair value of interest rate swap	81	168
NET OTHER COMPREHENSIVE INCOME (LOSS)	(24)	83
TOTAL COMPREHENSIVE INCOME	15,915	14,883
Guarantor Subsidiaries | Reportable legal entity
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
Revenues	763,636	921,413
Cost of Operations	697,908	839,820
Gross profit	65,728	81,593
General and Administrative Expenses	45,620	45,031
INCOME FROM CONSTRUCTION OPERATIONS	20,108	36,562
Other (Expense) Income, net	602	(144)
Interest Expense	(814)	(791)
Income before income taxes	19,896	35,627
Credit (Provision) for Income Taxes	(8,277)	(13,580)
NET INCOME	11,619	22,047
Other Comprehensive Income:
Foreign currency translation	(286)	(186)
Change in fair value of investments	181	101
NET OTHER COMPREHENSIVE INCOME (LOSS)	(105)	(85)
TOTAL COMPREHENSIVE INCOME	11,514	21,962
Non-Guarantor Subsidiaries | Reportable legal entity
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
Cost of Operations	(6,586)	(4,076)
Gross profit	6,586	4,076
General and Administrative Expenses	435	470
INCOME FROM CONSTRUCTION OPERATIONS	6,151	3,606
Other (Expense) Income, net	120	126
Income before income taxes	6,271	3,732
Credit (Provision) for Income Taxes	(2,609)	(1,423)
NET INCOME	3,662	2,309
Other Comprehensive Income:
TOTAL COMPREHENSIVE INCOME	$ 3,662	$ 2,309