Separate Financial Information of Subsidiary Guarantors of Indebtedness, Condensed Consolidating Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
CONDENSED CONSOLIDATING BALANCE SHEET
Ownership interest in guarantors (as a percent)	100.00%
ASSETS
Cash and Cash Equivalents	$ 133,064	$ 119,923	$ 132,318	$ 168,056
Restricted Cash	43,269	42,594
Accounts Receivable	1,263,390	1,291,246
Costs and Estimated Earnings in Excess of Billings	698,423	573,248
Deferred Income Taxes	8,195	8,240
Other Current Assets	54,858	50,669
Total current assets	2,201,199	2,085,920
Long-term investments	46,283	46,283
Property and Equipment, net	516,683	498,125
Other Assets:
Goodwill	577,756	577,756		1,065,741
Intangible Assets, net	110,071	113,740
Other	73,357	75,614
Total assets	3,525,349	3,397,438
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Maturities of Long-term Debt	122,947	114,658
Accounts Payable	791,638	758,225
Billings in Excess of Costs and Estimated Earnings	264,118	267,586
Accrued Expenses and Other Current Liabilities	148,986	158,017
Total current liabilities	1,327,689	1,298,486
Long-term debt, less current maturities	697,823	619,226
Deferred Income Taxes	114,186	114,333
Other Long-term Liabilities	118,631	117,858
Contingencies and Commitments
Stockholders' Equity	1,267,020	1,247,535
Total liabilities and stockholders' equity	3,525,349	3,397,438
Eliminations
ASSETS
Accounts Receivable	(86,290)	(90,951)
Costs and Estimated Earnings in Excess of Billings	(30,356)	(32,662)
Deferred Income Taxes	(7,626)	(7,626)
Other Current Assets	(39,538)	(37,632)
Total current assets	(163,810)	(168,871)
Intercompany Notes and Receivables	(288,792)	(428,190)
Other Assets:
Investment in Subsidiaries	(1,990,197)	(2,181,359)
Other	(5,249)	(5,183)
Total assets	(2,448,048)	(2,783,603)
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts Payable	(81,684)	(88,103)
Accrued Expenses and Other Current Liabilities	(46,490)	(47,841)
Total current liabilities	(128,174)	(135,944)
Long-term debt, less current maturities	(40,249)	(40,183)
Intercompany Notes and Advances Payable	(289,196)	(445,910)
Stockholders' Equity	(1,990,429)	(2,161,566)
Total liabilities and stockholders' equity	(2,448,048)	(2,783,603)
Tutor Perini Corporation | Reportable legal entity
ASSETS
Cash and Cash Equivalents	74,623	88,995	64,759	64,663
Restricted Cash	3,368	18,833
Accounts Receivable	191,362	208,227
Costs and Estimated Earnings in Excess of Billings	156,110	99,779
Other Current Assets	50,595	37,605
Total current assets	476,058	453,439
Long-term investments	46,283	46,283
Property and Equipment, net	80,531	77,562
Other Assets:
Investment in Subsidiaries	2,093,607	2,181,280
Other	68,141	70,269
Total assets	2,764,620	2,828,833
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Maturities of Long-term Debt	54,887	50,578
Accounts Payable	185,845	162,292
Billings in Excess of Costs and Estimated Earnings	77,208	90,267
Accrued Expenses and Other Current Liabilities	57,329	58,232
Total current liabilities	375,269	361,369
Long-term debt, less current maturities	642,975	575,356
Deferred Income Taxes	107,302	107,448
Other Long-term Liabilities	115,873	114,677
Intercompany Notes and Advances Payable	256,182	422,448
Stockholders' Equity	1,267,019	1,247,535
Total liabilities and stockholders' equity	2,764,620	2,828,833
Guarantor Subsidiaries | Reportable legal entity
ASSETS
Cash and Cash Equivalents	48,938	18,031	48,549	74,385
Restricted Cash	8,704	8,040
Accounts Receivable	1,107,448	1,126,012
Costs and Estimated Earnings in Excess of Billings	572,517	505,979
Deferred Income Taxes	15,821	15,866
Other Current Assets	31,384	26,234
Total current assets	1,784,812	1,700,162
Property and Equipment, net	431,650	415,993
Intercompany Notes and Receivables	288,792	428,190
Other Assets:
Goodwill	577,756	577,756
Intangible Assets, net	110,071	113,740
Investment in Subsidiaries	(103,460)	29
Other	10,465	10,528
Total assets	3,100,086	3,246,398
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Maturities of Long-term Debt	68,060	64,080
Accounts Payable	685,864	677,997
Billings in Excess of Costs and Estimated Earnings	186,876	177,285
Accrued Expenses and Other Current Liabilities	88,674	99,257
Total current liabilities	1,029,474	1,018,619
Long-term debt, less current maturities	95,097	84,053
Deferred Income Taxes	6,884	6,885
Other Long-term Liabilities	2,758	3,181
Stockholders' Equity	1,965,873	2,133,660
Total liabilities and stockholders' equity	3,100,086	3,246,398
Non-Guarantor Subsidiaries | Reportable legal entity
ASSETS
Cash and Cash Equivalents	9,503	12,897	19,010	29,008
Restricted Cash	31,197	15,721
Accounts Receivable	50,870	47,958
Costs and Estimated Earnings in Excess of Billings	152	152
Other Current Assets	12,417	24,462
Total current assets	104,139	101,190
Property and Equipment, net	4,502	4,570
Other Assets:
Investment in Subsidiaries	50	50
Total assets	108,691	105,810
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts Payable	1,613	6,039
Billings in Excess of Costs and Estimated Earnings	34	34
Accrued Expenses and Other Current Liabilities	49,473	48,369
Total current liabilities	51,120	54,442
Intercompany Notes and Advances Payable	33,014	23,462
Stockholders' Equity	24,557	27,906
Total liabilities and stockholders' equity	$ 108,691	$ 105,810
7.625% Senior Notes due 2018
CONDENSED CONSOLIDATING BALANCE SHEET
Interest rate (as a percent)	7.625%