Condensed Unaudited Consolidated Statements Of Operations (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Revenue	$ 1,269,385,000		$ 1,067,300,000		$ 3,165,657,000		$ 2,794,431,000
Costs of revenue, excluding depreciation and amortization	1,081,132,000		924,304,000		2,695,287,000		2,445,056,000
Depreciation and amortization					103,111,000		65,767,000
General and administrative expenses	58,976,000		42,514,000		159,761,000		118,192,000
Interest expense, net	12,666,000		9,446,000		34,549,000		27,883,000
Loss on extinguishment of debt	0		0		5,624,000		0
Other (income) expense, net	(2,778,000)		8,815,000		(3,283,000)		7,989,000
Income from continuing operations before provision for income taxes	81,633,000		59,576,000		170,608,000		130,186,000
Provision for income taxes	(31,698,000)		(23,478,000)		(65,822,000)		(51,229,000)
Net income from continuing operations before non-controlling interests	49,935,000		36,098,000		104,786,000		78,957,000
Discontinued operations:
Net loss from discontinued operations, including loss on disposal and impairment charges (See Note 4)	(3,735,000)		(9,281,000)		(5,165,000)		(7,881,000)
Net income	46,200,000		26,817,000		99,621,000		71,076,000
Net income (loss) attributable to non-controlling interests	62,000		(4,000)		172,000		(9,000)
Net income attributable to MasTec, Inc.	46,138,000		26,821,000		99,449,000		71,085,000
Basic earnings (loss) per share:
Continuing operations, basic earnings per share	$ 0.65		$ 0.47		$ 1.36		$ 1.00
Discontinued operations, basic earnings (loss) per share	$ (0.05)		$ (0.12)		$ (0.07)		$ (0.10)
Total basic earnings per share	$ 0.60	[1]	$ 0.35	[1]	$ 1.29	[1]	$ 0.90	[1]
Basic weighted average common shares outstanding	77,093		76,194		76,816		79,009
Diluted earnings (loss) per share:
Continuing operations, diluted earnings per share	$ 0.59		$ 0.45		$ 1.24		$ 0.97
Discontinued operations, diluted earnings (loss) per share	$ (0.04)		$ (0.12)		$ (0.06)		$ (0.10)
Total diluted earnings per share	$ 0.54	[1]	$ 0.34	[1]	$ 1.18	[1]	$ 0.87	[1]
Diluted weighted average common shares outstanding	85,464		79,526		84,733		81,982
Continuing Operations [Member]
Revenue	1,269,400,000		1,067,300,000		3,165,700,000		2,794,400,000
Depreciation and amortization	37,756,000		22,645,000		103,111,000		65,125,000
Interest expense, net	$ 12,700,000		$ 9,400,000		$ 34,500,000		$ 27,900,000

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