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Related Party Transactions
12 Months Ended
Dec. 31, 2017
Related Party Transactions [Abstract]  
Related Party Transactions
RELATED PARTY TRANSACTIONS:
Certain of Quanta’s operating units have entered into related party lease arrangements for operational facilities, typically with prior owners of certain acquired businesses. These lease agreements generally have terms of up to approximately 5 years and include renewal options. Related party lease expense for the years ended December 31, 2017, 2016 and 2015 was $12.3 million, $8.7 million and $10.6 million, respectively.