Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 141,216	$ 107,416	$ 105,972
Other comprehensive (loss) income:
Activity, net of tax (See Note 13)	(7,785)	2,445	(1,790)
Comprehensive income	133,431	109,861	104,182
Comprehensive income (loss) attributable to non-controlling interests	266	(10)	(29)
Comprehensive income attributable to MasTec, Inc.	133,165	109,871	104,211
Accumulated Translation Adjustment [Member]
Other comprehensive (loss) income:
Activity, net of tax (See Note 13)	(7,893)	1,924	(1,630)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Other comprehensive (loss) income:
Activity, net of tax (See Note 13)	$ 108	$ 521	$ (160)