Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 24,059	$ 7,067	$ 15,924	$ 9,261	$ 22,927	$ 26,767	$ 20,280
Accounts receivable, net of allowance	1,303,552	1,385,678	1,280,250	1,185,236	1,134,693
Inventories, net	112,804	105,038	115,627	89,146	70,185
Prepaid expenses and other current assets	91,336	71,944	70,809	66,352	79,221
Total current assets	1,531,751	1,569,727	1,482,610	1,349,995	1,307,026
Property and equipment, net	623,118	614,359	618,672	509,585	488,132
Goodwill	1,082,466	1,000,024	983,133	912,885	902,044	826,600
Other intangible assets, net	250,373	222,212	230,592	171,562	165,606	137,000
Other long-term assets	76,272	59,579	73,821	61,439	60,390
Total assets	3,563,980	3,465,901	3,388,828	3,005,466	2,923,198	2,416,300
Current liabilities:
Current maturities of long-term debt	73,631	71,798	76,914	52,949	51,376
Accounts payable	485,347	481,840	494,090	440,423	424,917
Accrued salaries and wages	60,528	82,083	63,945	68,055	66,455
Other accrued expenses	89,343	82,952	69,401	60,453	71,448
Acquisition-related contingent consideration, current	49,798	39,126	36,479	71,500	67,226
Billings in excess of costs and earnings	155,674	129,732	108,968	109,370	121,641
Other current liabilities	66,527	17,665	13,890	20,431	26,162
Total current liabilities	980,848	905,196	863,687	823,181	829,225
Acquisition-related contingent consideration, net of current portion	103,515	115,649	116,929	112,950	112,370
Long-term debt	1,061,159	1,088,289	1,088,666	841,335	765,425
Long-term deferred tax liabilities, net	203,476	180,449	186,538	154,151	154,763
Other long-term liabilities	66,907	45,978	43,949	40,929	40,357
Total liabilities	$ 2,415,905	$ 2,335,561	$ 2,299,769	$ 1,972,546	$ 1,902,140
Commitments and contingencies (See Note 17)
Equity
Preferred stock, $1.00 par value: authorized shares - 5,000,000; issued and outstanding shares - none	$ 0	$ 0	$ 0	$ 0	$ 0
Common stock, $0.10 par value: authorized shares - 145,000,000; issued shares - 87,614,955 and 86,725,372 as of December 31, 2014 and 2013, respectively	8,762	8,711	8,704	8,700	8,672
Capital surplus	756,688	781,400	776,301	827,863	822,836
Contributed shares (See Note 12)	0	6,002	6,002	6,002	6,002
Retained earnings	457,788	436,671	387,685	353,961	341,865
Accumulated other comprehensive loss	(34,004)	(23,897)	(10,946)	(18,622)	(13,286)	(5,501)	(7,946)
Treasury stock, at cost: 2,876,311 and 9,467,286 shares as of December 31, 2014 and 2013, respectively	(45,573)	(83,385)	(83,385)	(150,000)	(150,000)
Total MasTec, Inc. shareholders' equity	1,143,661	1,125,502	1,084,361	1,027,904	1,016,089
Non-controlling interests	4,414	4,838	4,698	5,016	4,969
Total equity	1,148,075	1,130,340	1,089,059	1,032,920	1,021,058	$ 861,875	$ 811,207
Total liabilities and equity	$ 3,563,980	$ 3,465,901	$ 3,388,828	$ 3,005,466	$ 2,923,198