Condensed Unaudited Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Revenue	$ 977,624		$ 988,874		$ 1,896,272		$ 1,727,131
Costs of revenue, excluding depreciation and amortization	822,655		868,504		1,614,154		1,520,752
Depreciation and amortization					65,355		42,946
General and administrative expenses	51,900		38,374		100,785		75,678
Interest expense, net	11,838		9,487		21,883		18,438
Loss on extinguishment of debt	0		0		5,624		0
Other expense (income), net	322		(366)		(504)		(827)
Income from continuing operations before provision for income taxes	57,307		51,112		88,975		70,610
Provision for income taxes	(21,776)		(19,948)		(34,124)		(27,751)
Income from continuing operations before non-controlling interests	35,531		31,164		54,851		42,859
Discontinued operations:
(Loss) income from discontinued operations, net of tax, including impairment charges and loss on disposal (See Note 4 - Discontinued Operations)	(484)		(1,075)		(1,431)		1,399
Net income	35,047		30,089		53,420		44,258
Net income (loss) attributable to non-controlling interests	106		(3)		109		(6)
Net income attributable to MasTec, Inc.	34,941		30,092		53,311		44,264
Basic earnings (loss) per share:
Continuing operations, basic earnings per share	$ 0.46		$ 0.39		$ 0.71		$ 0.53
Discontinued operations, basic earnings (loss) per share	$ (0.01)		$ (0.01)		$ (0.02)		$ 0.02
Total basic earnings per share	$ 0.46	[1]	$ 0.37	[1]	$ 0.70	[1]	$ 0.55	[1]
Basic weighted average common shares outstanding	76,741		80,249		76,675		80,432
Diluted earnings (loss) per share:
Continuing operations, diluted earnings per share	$ 0.42		$ 0.38		$ 0.65		$ 0.52
Discontinued operations, diluted earnings (loss) per share	$ (0.01)		$ (0.01)		$ (0.02)		$ 0.02
Total diluted earnings per share	$ 0.41	[1]	$ 0.37	[1]	$ 0.63	[1]	$ 0.53	[1]
Diluted weighted average common shares outstanding	84,558		82,466		84,337		83,213
Segment, Continuing Operations [Member]
Revenue	977,600		988,900		1,896,300		1,727,100
Depreciation and amortization	33,602		21,763		65,355		42,480
Interest expense, net	$ 11,800		$ 9,500		$ 21,900		$ 18,400

[1] Earnings per share tables may contain slight summation differences due to rounding.