Related Party Transactions	12 Months Ended
Dec. 31, 2014
Related Party Transactions [Abstract]
Related Party Transactions	Note 18 - Related Party Transactions MasTec purchases, rents and leases equipment used in its business from a number of different vendors on a non-exclusive basis, including Cross Country Pipeline Supply, Inc. (“CCP”), in which the Company has a cost method investment of $15 million, resulting from its investment in CCP in 2013. Juan Carlos Mas, who is the brother of Jorge Mas, Chairman of MasTec’s Board of Directors, and José R. Mas, MasTec’s Chief Executive Officer, serves as the chairman of CCP. Additionally, an entity owned by Jorge, José R. and Juan Carlos Mas is a minority shareholder of CCP. For the years ended December 31, 2014 and 2013, MasTec paid CCP approximately $6.3 million and $1.3 million, respectively, for equipment rentals, leases and servicing. MasTec leases employees to a customer in which Jorge Mas and José R. Mas own a minority interest. For the years ended December 31, 2014, 2013 and 2012, MasTec charged approximately $0.7 million, $0.6 million and $0.5 million, respectively, to this customer. As of both December 31, 2014 and 2013, outstanding receivables from employee leasing arrangements with this customer totaled $0.1 million. The Company also provides satellite communication services to this customer. For the years ended December 31, 2014, 2013 and 2012, satellite communication revenue relating to this customer totaled approximately $1.0 million, $1.3 million and $1.2 million, respectively. As of December 31, 2014 and 2013, outstanding receivables from this customer for satellite communication services totaled approximately $0.5 million and $0.4 million, respectively. MasTec leases a property located in Florida from Irma S. Mas, the mother of Jorge Mas and José R. Mas. For the years ended December 31, 2014, 2013 and 2012, the Company paid lease payments of approximately $48,000, $52,000 and $44,000, respectively, in connection with this property. Split Dollar Agreements In August 2014, José R. Mas, the Company and Jorge Mas, Juan Carlos Mas and Patricia Mas, as trustees of the Jose Ramon Mas Irrevocable Trust, dated December 7, 2012 (the “Jose Mas trust”), entered into a split dollar life insurance agreement that replaced a prior split dollar agreement and eliminated a deferred bonus agreement with José Mas. Under the new split dollar agreement, MasTec is the sole owner of each of the policies subject to the agreement. The Company will make the premium payments under each of the policies. Upon the death of José R. Mas or the survivor of José R. Mas and his wife (collectively, the “José R. Mas insureds”) under the applicable policy, MasTec is entitled to receive a portion of the death benefit under the policy equal to the greater of (i) premiums paid by the Company on the policy and (ii) the then cash value of the policy (excluding surrender charges or other similar charges or reductions) immediately before the triggering death. The balance of the death benefit is payable to the Jose Mas trust or other beneficiary designated by the trustees. In the event of the Company’s bankruptcy or dissolution, the Jose Mas trust shall have the assignable option to purchase the policies subject to the split dollar agreement from the Company. The purchase price for each policy shall be the greater of either the total premiums paid by the Company for the policy, or the then cash value of the policy, excluding surrender charges or other similar charges or reductions. The total maximum face amount of the insurance policies subject to the split dollar agreement is capped at $75 million. The Company is designated as the named fiduciary under the split dollar agreement, and the policy may not be surrendered without the express written consent of the Jose Mas trust. In October 2013, Jorge Mas, the Company and Jose Ramon Mas and Juan Carlos Mas, as trustees of the Jorge Mas Irrevocable Trust, dated June 1, 2012 (the “Jorge Mas trust”) entered into a split dollar life insurance agreement that replaced a prior split dollar agreement and eliminated a deferred bonus agreement with Jorge Mas. Under the new split dollar agreement, MasTec is the sole owner of each of the policies subject to the agreement. The Company will make the premium payments under each of the policies. Upon the death of Jorge Mas or the survivor of Jorge Mas and his wife (collectively, the “Jorge Mas insureds”) under the applicable policy, MasTec is entitled to receive a portion of the death benefit under the policy equal to the greater of (i) premiums paid by the Company on the policy and (ii) the then cash value of the policy (excluding surrender charges or other similar charges or reductions) immediately before the triggering death. The balance of the death benefit is payable to the Jorge Mas trust or other beneficiary designated by the trustees. In the event of the Company’s bankruptcy or dissolution, the Jorge Mas trust shall have the assignable option to purchase the policies subject to the split dollar agreement from the Company. The purchase price for each policy shall be the greater of either the total premiums paid by the Company for the policy, or the then cash value of the policy, excluding surrender charges or other similar charges or reductions. The total maximum face amount of the insurance policies subject to the split dollar agreement is capped at $200 million. The Company is designated as the named fiduciary under the split dollar agreement, and the policy may not be surrendered without the express written consent of the Jorge Mas trust. For the year ended December 31, 2014, the Company received $0.1 million of proceeds from policies surrendered, net of premiums paid, related to the split dollar and deferred bonus agreements for José R. Mas. For the years ended December 31, 2013 and 2012, the Company did not make any payments in respect thereof. The Company paid approximately $1.1 million for the year ended December 31, 2014 related to the Jorge Mas split dollar agreements. For the year ended December 31, 2013, the Company paid approximately $1.2 million, net of proceeds from policies surrendered, related to the Jorge Mas agreements. For the year ended December 31, 2012, the Company paid approximately $0.3 million related to these agreements. As of December 31, 2014 and 2013, life insurance assets associated with these agreements totaled $11.1 million and $10.2 million, respectively, and were included within other long-term assets in the consolidated balance sheets.

Note 18 - Related Party Transactions

MasTec purchases, rents and leases equipment used in its business from a number of different vendors on a non-exclusive basis, including Cross Country Pipeline Supply, Inc. (“CCP”), in which the Company has a cost method investment of $15 million, resulting from its investment in CCP in 2013. Juan Carlos Mas, who is the brother of Jorge Mas, Chairman of MasTec’s Board of Directors, and José R. Mas, MasTec’s Chief Executive Officer, serves as the chairman of CCP. Additionally, an entity owned by Jorge, José R. and Juan Carlos Mas is a minority shareholder of CCP. For the years ended December 31, 2014 and 2013, MasTec paid CCP approximately $6.3 million and $1.3 million, respectively, for equipment rentals, leases and servicing.

MasTec leases employees to a customer in which Jorge Mas and José R. Mas own a minority interest. For the years ended December 31, 2014, 2013 and 2012, MasTec charged approximately $0.7 million, $0.6 million and $0.5 million, respectively, to this customer. As of both December 31, 2014 and 2013, outstanding receivables from employee leasing arrangements with this customer totaled $0.1 million. The Company also provides satellite communication services to this customer. For the years ended December 31, 2014, 2013 and 2012, satellite communication revenue relating to this customer totaled approximately $1.0 million, $1.3 million and $1.2 million, respectively. As of December 31, 2014 and 2013, outstanding receivables from this customer for satellite communication services totaled approximately $0.5 million and $0.4 million, respectively.

MasTec leases a property located in Florida from Irma S. Mas, the mother of Jorge Mas and José R. Mas. For the years ended December 31, 2014, 2013 and 2012, the Company paid lease payments of approximately $48,000, $52,000 and $44,000, respectively, in connection with this property.

Split Dollar Agreements

In August 2014, José R. Mas, the Company and Jorge Mas, Juan Carlos Mas and Patricia Mas, as trustees of the Jose Ramon Mas Irrevocable Trust, dated December 7, 2012 (the “Jose Mas trust”), entered into a split dollar life insurance agreement that replaced a prior split dollar agreement and eliminated a deferred bonus agreement with José Mas. Under the new split dollar agreement, MasTec is the sole owner of each of the policies subject to the agreement. The Company will make the premium payments under each of the policies. Upon the death of José R. Mas or the survivor of José R. Mas and his wife (collectively, the “José R. Mas insureds”) under the applicable policy, MasTec is entitled to receive a portion of the death benefit under the policy equal to the greater of (i) premiums paid by the Company on the policy and (ii) the then cash value of the policy (excluding surrender charges or other similar charges or reductions) immediately before the triggering death. The balance of the death benefit is payable to the Jose Mas trust or other beneficiary designated by the trustees. In the event of the Company’s bankruptcy or dissolution, the Jose Mas trust shall have the assignable option to purchase the policies subject to the split dollar agreement from the Company. The purchase price for each policy shall be the greater of either the total premiums paid by the Company for the policy, or the then cash value of the policy, excluding surrender charges or other similar charges or reductions. The total maximum face amount of the insurance policies subject to the split dollar agreement is capped at $75 million. The Company is designated as the named fiduciary under the split dollar agreement, and the policy may not be surrendered without the express written consent of the Jose Mas trust.

In October 2013, Jorge Mas, the Company and Jose Ramon Mas and Juan Carlos Mas, as trustees of the Jorge Mas Irrevocable Trust, dated June 1, 2012 (the “Jorge Mas trust”) entered into a split dollar life insurance agreement that replaced a prior split dollar agreement and eliminated a deferred bonus agreement with Jorge Mas. Under the new split dollar agreement, MasTec is the sole owner of each of the policies subject to the agreement. The Company will make the premium payments under each of the policies. Upon the death of Jorge Mas or the survivor of Jorge Mas and his wife (collectively, the “Jorge Mas insureds”) under the applicable policy, MasTec is entitled to receive a portion of the death benefit under the policy equal to the greater of (i) premiums paid by the Company on the policy and (ii) the then cash value of the policy (excluding surrender charges or other similar charges or reductions) immediately before the triggering death. The balance of the death benefit is payable to the Jorge Mas trust or other beneficiary designated by the trustees. In the event of the Company’s bankruptcy or dissolution, the Jorge Mas trust shall have the assignable option to purchase the policies subject to the split dollar agreement from the Company. The purchase price for each policy shall be the greater of either the total premiums paid by the Company for the policy, or the then cash value of the policy, excluding surrender charges or other similar charges or reductions. The total maximum face amount of the insurance policies subject to the split dollar agreement is capped at $200 million. The Company is designated as the named fiduciary under the split dollar agreement, and the policy may not be surrendered without the express written consent of the Jorge Mas trust.

For the year ended December 31, 2014, the Company received $0.1 million of proceeds from policies surrendered, net of premiums paid, related to the split dollar and deferred bonus agreements for José R. Mas. For the years ended December 31, 2013 and 2012, the Company did not make any payments in respect thereof. The Company paid approximately $1.1 million for the year ended December 31, 2014 related to the Jorge Mas split dollar agreements. For the year ended December 31, 2013, the Company paid approximately $1.2 million, net of proceeds from policies surrendered, related to the Jorge Mas agreements. For the year ended December 31, 2012, the Company paid approximately $0.3 million related to these agreements. As of December 31, 2014 and 2013, life insurance assets associated with these agreements totaled $11.1 million and $10.2 million, respectively, and were included within other long-term assets in the consolidated balance sheets.