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Related Party Transactions
12 Months Ended
Dec. 31, 2018
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, 2018, 2017 and 2016 was $14.0 million, $12.3 million and $8.7 million, respectively.