Quarterly Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

Quarterly Information (Unaudited) [Abstract]

Quarterly Operating Results

	2011 Quarter Ended								2010 Quarter Ended
	Mar 31		Jun 30		Sep 30		Dec 31		Mar 31		Jun 30		Sep 30		Dec 31
Revenue	$	618,492	$	750,942	$	865,313	$	774,230	$	450,231	$	495,113	$	631,947	$	730,740
Net income attributable to MasTec	$	21,106	$	44,494	$	31,842	$	8,559	$	7,411	$	14,601	$	30,006	$	38,510
Basic net income per share attributable to MasTec	$	0.27	$	0.54	$	0.38	$	0.10	$	0.10	$	0.19	$	0.39	$	0.50
Diluted net income per share attributable to MasTec	$	0.26	$	0.51	$	0.36	$	0.10	$	0.10	$	0.18	$	0.35	$	0.44