Lease Obligations	9 Months Ended
Lease Obligations	Sep. 30, 2014
Leases [Abstract]
Lease Obligations	Note 10 - Lease Obligations Capital Leases MasTec enters into agreements that provide financing for machinery and equipment, which expire on various dates. The gross amount of assets held under capital leases as of September 30, 2014 and December 31, 2013 totaled $276.2 million and $199.6 million, respectively. Assets held under capital leases, net of accumulated depreciation, totaled $203.7 million and $141.3 million as of September 30, 2014 and December 31, 2013, respectively. Operating Leases In the ordinary course of business, the Company enters into non-cancelable operating leases for certain of its facility, vehicle and equipment needs, including related party leases. Rent expense relating to operating leases that have non-cancelable terms in excess of one year was approximately $18.1 million and $12.7 million for the three month periods ended September 30, 2014 and 2013, respectively, and $51.5 million and $37.1 million for the nine month periods ended September 30, 2014 and 2013, respectively. The Company also incurred expenses relating to facilities, vehicles and equipment having original terms of one year or less of approximately $54.5 million and $63.0 million for the three month periods ended September 30, 2014 and 2013, respectively, and $142.6 million and $138.9 million for the nine month periods ended September 30, 2014 and 2013, respectively.

The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

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