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Condensed Unaudited Financial Statements, Supplemental Guarantor Information [Abstract] Condensed Unaudited Financial Statements, Supplemental Guarantor Information [Abstract] Condensed Income Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] MasTec, Inc. 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Contract price, pending litigation Contracts Receivable, Claims and Uncertain Amounts Liens sought, pending litigation Liens Sought Liens Sought Employee Stock Option Plan [Member] Employee Stock Option [Member] Employee Stock Purchase Plan [Member] Employee Stock [Member] Shares available for grant or issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Unearned compensation Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Unearned compensation, weighted average expected recognition period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Vested awards, intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Stock-based compensation, percentage vested Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Stock options exercised, intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Stock options exercised, proceeds Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options Stock-based compensation plan, description Share-based Compensation Arrangement by Share-based Payment Award, Description Stock-based compensation, purchase price of common stock, percentage of fair value Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Stock-based compensation, fair value assumptions, method used Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Contingent Consideration by Type [Axis] Contingent Consideration by Type [Axis] Contingent Consideration Type [Domain] Contingent Consideration Type [Domain] Earn-Out Arrangements [Member] Earnout Arrangements [Member] Earnout Arrangements [Member] Investor [Member] Investor [Member] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Contributed Shares [Member] Contributed Shares [Member] Contributed Shares [Member] Statement [Line Items] Statement [Line Items] Assets Assets [Abstract] Current assets Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net of allowance Accounts Receivable, Net, Current Inventories, net Inventory, Net Prepaid expenses and other current assets, including discontinued operations (See Note 4) Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Goodwill Other intangible assets, net Other long-term assets, including discontinued operations (See Note 4) Other Assets, Noncurrent Total assets Assets Liabilities and Equity Liabilities and Equity [Abstract] Current liabilities Liabilities, Current [Abstract] Current maturities of long-term debt Long-term Debt and Capital Lease Obligations, Current Accounts payable Accounts Payable, Current Accrued salaries and wages Employee-related Liabilities, Current Other accrued expenses Accrued Liabilities, Current Acquisition-related contingent consideration, current Other Sundry Liabilities, Current Billings in excess of costs and earnings Billings in Excess of Cost, Current Other current liabilities, including discontinued operations (See Note 4) Other Liabilities, Current Total current liabilities Liabilities, Current Acquisition-related contingent consideration, net of current portion Other Sundry Liabilities, Noncurrent Long-term debt Long-term Debt and Capital Lease Obligations Other liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (See Note 16) Commitments and Contingencies Equity Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $1.00 par value; 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