Capital Stock (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended				3 Months Ended	12 Months Ended	26 Months Ended	31 Months Ended
	Sep. 08, 2008	Dec. 31, 2013	Dec. 31, 2012	Sep. 07, 2008	Mar. 31, 2011 Common Stock Repurchase Program	Dec. 31, 2010 Common Stock Repurchase Program	Dec. 31, 2010 Common Stock Repurchase Program	Mar. 31, 2011 Common Stock Repurchase Program	Dec. 31, 2013 Mr. Tutor, CEO and beneficial owner
Common Stock
Common stock, shares authorized	75,000,000	75,000,000	75,000,000	40,000,000
Common stock, shares issued upon acquisition of shares of Tutor-Saliba (in shares)	22,987,293
Common stock, shares outstanding		48,421,467	47,556,056						8,306,375
Common Stock Repurchase Program
Common stock, maximum authorized amount to be repurchased								$ 100
Common stock, shares repurchased and cancelled (in shares)					0	2,164,840	4,168,238
Common stock, value of shares repurchased and cancelled						$ 39.4	$ 71.2
Common stock, average purchase price per share repurchased and cancelled (in dollars per share)							$ 17.08
Preferred Stock
Preferred stock, shares authorized		1,000,000	1,000,000
Preferred stock, shares issued		0	0
Preferred stock, shares outstanding		0	0