Fair Value Disclosures [Abstract] Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract] Fair Value Measurements, Recurring and Non-Recurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Fair Value [Member] Estimate of Fair Value Measurement [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] 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] Fair Value, Assets and Liabilities Measured on Recurring and Non-Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Life insurance surrender values Cash Surrender Value, Fair Value Disclosure Acquisition-related contingent consideration Obligations, Fair Value Disclosure Receivables [Abstract] Accounts Receivable, Net of Allowance Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Leases [Abstract] Assets held under capital lease, gross Capital Leased Assets, Gross Assets held under capital lease, net Capital Leases, Balance Sheet, Assets by Major Class, Net Condensed Unaudited Financial Statements, Supplemental Guarantor Information [Abstract] Condensed Unaudited Financial Statements, Supplemental Guarantor Information [Abstract] Condensed Unaudited Consolidating Statements Of Operations And Comprehensive Income Condensed Income Statement [Table Text Block] Condensed Unaudited Consolidating Balance Sheets Condensed Balance Sheet [Table Text Block] Condensed Unaudited Consolidating Statements Of Cash Flows Condensed Cash Flow Statement [Table Text Block] Business Combinations [Abstract] Business Acquisition, Pro Forma Information [Abstract] Business acquisitions, pro forma information, description Business Acquisition, Pro Forma Information, Description Business acquisitions, pro forma revenue Business Acquisition, Pro Forma Revenue Business acquisitions, pro forma net income from continuing operations Business Acquisition, Pro Forma Net Income (Loss) Aquiree revenue, year over year incremental impact Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Acquiree net income from continuing operations, year over year incremental impact Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Goodwill and Intangible Assets Disclosure [Abstract] Rollforward of Goodwill by Segment Schedule of Goodwill [Table Text Block] Rollforward of Other Intangible Assets Intangible Assets Disclosure [Text Block] Property, Plant and Equipment [Abstract] Schedule of Property and Equipment, Net [Table] Property, Plant and Equipment [Table] Property and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land [Member] Land [Member] Building and Leasehold Improvements [Member] Building and Building Improvements [Member] Machinery and Equipment [Member] Machinery and Equipment [Member] Office Furniture and Equipment [Member] Furniture and Fixtures [Member] Construction in Progress [Member] Construction in Progress [Member] Property and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Property, Plant and Equipment, Net Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of EBITDA to Consolidated Income from Continuing Operations Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Schedule of Significant Customers, Revenue Concentration Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Operating Activities [Axis] Operating Activities [Axis] Operating Activities [Domain] Continuing Operations [Member] Continuing Operations [Member] Segment Reporting Information [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] EBITDA EBITDA1 Earnings before interest, taxes, depreciation and amortization, a non-U.S. GAAP financial measure of profitability. Less: Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Interest expense, net Interest Revenue (Expense), Net Depreciation and amortization Depreciation, Depletion and Amortization Income from continuing operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Acquisitions Business Combination Disclosure [Text Block] Accounting Policies [Abstract] Nature of the Business Nature of Operations [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Translation of Foreign Currencies Foreign Currency Transactions and Translations Policy [Policy Text Block] Management Estimates Use of Estimates, Policy [Policy Text Block] Significant Accounting Policies Significant Accounting Policies [Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Number of reportable segments Number of Reportable Segments Revenue Recognition [Abstract] Revenue Recognition [Abstract] Revenue from External Customers by Products and Services [Table] Revenue from External Customers by Products and Services [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Unapproved Change Orders [Member] Unapproved Change Orders [Member] Unapproved Change Orders [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Unbilled Revenue [Member] Unbilled Revenues [Member] Revenue Recognition [Line Items] Revenue from External Customer [Line Items] Unapproved change orders, amount Unapproved Change Orders, Amount Unapproved change orders, description Unapproved Change Orders, Description Unapproved change orders, period expected to be outstanding Fair Value Assumptions, Expected Term Unapproved change orders, increase Increase (Decrease) in Unbilled Receivables New Accounting Pronouncements and Changes in Accounting Principles [Abstract] New Accounting Pronouncements and Changes in Accounting Principles [Abstract] Accounting Standards Not Yet Adopted Description of New Accounting Pronouncements Not yet Adopted [Text Block] Recently Adopted Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Income Statement [Abstract] Revenue Revenues Costs of revenue, excluding depreciation and amortization Cost of Services, Excluding Depreciation, Depletion, and Amortization Depreciation and amortization General and administrative expenses General and Administrative Expense Interest expense, net Loss on extinguishment of debt Gains (Losses) on Extinguishment of Debt Other income, net Nonoperating Income (Expense) Provision for income taxes Income Tax Expense (Benefit) Net income from continuing operations Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Discontinued operations: Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Net loss from discontinued operations (See Note 4) Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to MasTec, Inc. Net Income (Loss) Attributable to Parent Earnings per share: (See Note 2) Earnings Per Share, Basic and Diluted [Abstract] Basic earnings (loss) per share: Earnings Per Share, Basic [Abstract] Continuing operations Income (Loss) from Continuing Operations, Per Basic Share Discontinued operations Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Total basic earnings per share Earnings Per Share, Basic Basic weighted average common shares outstanding Weighted Average Number of Shares Outstanding, Basic Diluted earnings (loss) per share: Earnings Per Share, Diluted [Abstract] Continuing operations Income (Loss) from Continuing Operations, Per Diluted Share Discontinued operations Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Total diluted earnings per share Earnings Per Share, Diluted Diluted weighted average common shares outstanding Weighted Average Number of Shares Outstanding, Diluted Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments [Member] Operating Segments [Member] Corporate, Non-Segment [Member] Corporate, Non-Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Communications [Member] Communications [Member] Communications [Member] Oil and Gas [Member] 237120 Oil and Gas Pipeline and Related Structures Construction [Member] Electrical Transmission [Member] Electric Transmission [Member] Power Generation and Industrial [Member] Power Generation and Industrial [Member] Power plant, renewable energy, industrial infrastructure and related facilities contruction Other Segments [Member] Other Segments [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Multi-Employer Plan Type [Axis] Multiemployer Plan Type [Axis] Multi-Employer Plans Type [Domain] Multiemployer Plans Type [Domain] Multi-Employer Plans, Pension [Member] Multiemployer Plans, Pension [Member] Withdrawal from Multi-Employer Defined Benefit Plan [Member] Withdrawal from Multiemployer Defined Benefit Plan [Member] Multi-Employer Plan Name [Axis] Multiemployer Plan Name [Axis] Multi-Employer Plan Name [Domain] Multiemployer Plan Name [Domain] Central States Southeast And Southwest Areas Pension Fund [Member] Central States Southeast And Southwest Areas Pension Fund [Member] Central States Southeast And Southwest Areas Pension Fund [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Multi-employer plans, collective bargaining arrangement, description Multiemployer Plans, Collective-Bargaining Arrangement, Description Loss contingency, evaluation of estimated loss Loss Contingency, Management's Assessment and Process Withdrawal liability Multiemployer Plans, Withdrawal Obligation Maximum loss Loss Contingency, Range of Possible Loss, Maximum Debt Disclosure [Abstract] Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Total Senior And Senior Convertible Notes [Member] Total Senior And Senior Convertible Notes [Member] Total Senior And Senior Convertible Notes [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes [Member] Senior Notes [Member] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] Unsecured Debt [Member] Unsecured Debt [Member] Guarantor Subsidiaries [Member] Guarantor Subsidiaries [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt instrument, guarantees Debt Instrument, Collateral Percentage of voting interests owned, guarantor subsidiaries Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Debt instrument, covenant compliance Debt Instrument, Covenant Compliance Income Tax Disclosure [Abstract] Effective income tax rate, continuing operations Effective Income Tax Rate Reconciliation, Percent Quarterly financial information, income taxes Quarterly Financial Information, Income Taxes, Significant Variation, Description Current deferred tax assets, net Deferred Tax Assets, Net, Current Long-term deferred tax liabilities, net Deferred Tax Liabilities, Net, Noncurrent Property and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] MasTec, Inc. [Member] Parent Company [Member] Non-Guarantor Subsidiaries [Member] Non-Guarantor Subsidiaries [Member] Eliminations [Member] Consolidation, Eliminations [Member] Condensed Unaudited Consolidating Balance Sheets [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Assets Assets [Abstract] Current assets, including discontinued operations Assets, Current Property and equipment, net Goodwill and other intangible assets, net Intangible Assets, Net (Including Goodwill) Net investments in and advances to (from) consolidated affilliates Investment In Subsidiaries Investment In Subsidiaries Other long-term assets, including disontinued operations Other Assets, Noncurrent Total assets Assets Liabilities and Equity Liabilities and Equity [Abstract] Total current liabilities Liabilities, Current Long-term debt Long-term Debt and Capital Lease Obligations Other liabilities Liabilities, Other than Long-term Debt, Noncurrent Total liabilities Liabilities Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and equity Liabilities and Equity Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Convertible Debt [Member] Convertible Debt [Member] 2011 Convertible Notes [Member] 2011 Senior Convertible Notes [Member] 2011 Senior Convertible Notes [Member] 2011 4.0% Notes [Member] 2011 4.0% Notes [Member] 2011 4.0% Notes 2011 4.25% Notes [Member] 2011 4.25% Notes [Member] 2011 4.25% Notes [Member] Total Convertible Debt [Member] Total Convertible Debt [Member] Total Convertible Debt [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Plan [Member] Scenario, Plan [Member] Unamortized debt discount and financing costs Debt Instrument, Unamortized Discount Debt instrument, maturity date Debt Instrument, Maturity Date Debt, intent to refinance, amount Short-term Debt, Refinanced, Amount Debt, intent to refinance, description Short-term Debt, Refinanced, Description Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Other Commitments [Axis] Other Commitments [Axis] Other Commitments [Domain] Other Commitments [Domain] Lease Term In Excess Of One Year [Member] Lease Term In Excess Of One Year [Member] Lease Term In Excess Of One Year [Member] Lease Term Less Than One Year [Member] Lease Term Less Than One Year [Member] Lease Term Less Than One Year [Member] Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Operating leases, rent expense Operating Leases, Rent Expense, Net Schedule Of Other Intangible Assets [Table] ScheduleOfIntangibleAssets [Table] Schedule of intangible assets, excluding goodwill Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Trade Names [Member] Trade Names [Member] Pre-Qualifications [Member] Pre Qualifications [Member] Pre-Qualifications [Member] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Customer Relationships and Backlog [Member] Customer-Related Intangible Assets [Member] Other Finite-Lived Intangible Assets [Member] Other Intangible Assets [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Intangible Assets [Member] Intangible Assets Excluding Goodwill [Member] Intangible Assets Excluding Goodwill [Member] Other Intangible Assets [Line Items] Intangible assets [Line Items] Line items for the intangibles table Other intangible assets, non-amortizing, gross carrying amount Indefinite-Lived Intangible Assets (Excluding Goodwill) Other intangible assets, amortizing, gross carrying amount Finite-Lived Intangible Assets, Gross Other intangible assets, gross carrying amount Intangible Assets, Gross (Excluding Goodwill) Accumulated amortization, amortizing intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Other Intangible Assets [Rollforward] Intangible Assets (Excluding Goodwill) [Roll Forward] Intangible Assets (Excluding Goodwill) [Roll Forward] Other intangible assets, non-amortizing, beginning balance Other intangible assets, net, amortizing, beginning balance Finite-Lived Intangible Assets, Net Other intangible assets, net, beginning balance Intangible Assets, Net (Excluding Goodwill) Additions from new business combinations, non-amortizing intangible assets Indefinite-lived Intangible Assets Acquired Additions from new business combinations, amortizing intangible assets Finite-lived Intangible Assets Acquired Additions from new business combinations, other intangible assets Payments to Acquire Intangible Assets Amortization of intangible assets Amortization of Intangible Assets Currency translation adjustments, non-amortizing intangible assets Indefinite-lived Intangible Assets, Translation Adjustments Currency translation adjustments, amortizing intangible assets Finite-Lived Intangible Assets, Translation Adjustments Currency translation adjustments, other intangible assets Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Other intangible assets, non-amortizing, ending balance Other intangible assets, net, amortizing, ending balance Other intangible assets, net, ending balance Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Schedule of Revenue by Major Customers, by Reportable Segment [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk [Member] Customer Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Revenue [Member] Sales Revenue, Services, Net [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] AT&T [Member] At T [Member] AT & T [Member] DIRECTV[Member] Direct Tv [Member] Direct TV [Member] Enbridge [Member] Enbridge [Member] [Domain] Enbridge [Member] Revenue, Significant Customer [Line Items] Significant customer, percentage of consolidated revenue Concentration Risk, Percentage Segment reporting, disclosure of significant customers Segment Reporting, Disclosure of Major Customers Schedule of Long Term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Interest Expense, Net Interest Income and Interest Expense Disclosure [Table Text Block] Equity [Abstract] Equity Stockholders' Equity Note Disclosure [Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] 2013 Acquisitions [Member] 2013 Acquisitions [Member] 2013 Acquisitions [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Schedule of Business Acquisitions, Measurement Period Adjustments Schedule of Change in Accounting Estimate [Table Text Block] Schedule of Business Acquisitions, Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] Multiemployer Plans [Abstract] Multi-employer plans, general nature Multiemployer Plans, General Nature Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Trade Accounts Receivable [Member] Trade Accounts Receivable [Member] Schedule of Accounts Receivable, Net of Allowance [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Schedule Of Accounts Receivable, Net of Allowance Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Property and Equipment [Member] Property, Plant and Equipment [Member] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Other Share Activity [Member] Other Share Activity [Member] Other Share Activity [Member] Class of Stock [Line Items] Class of Stock [Line Items] Rollforward of Share Activity Increase (Decrease) in Stockholders' Equity [Roll Forward] Common shares outstanding, beginning balance Common Stock, Shares, Outstanding Shares issued for stock option exercises Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Shares issued for restricted stock awards Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Other shares issued, net of shares withheld for taxes Stock Issued During Period, Shares, Period Increase (Decrease) Common shares outstanding, ending balance Treasury shares, beginning balance Treasury Stock, Shares Treasury shares, ending balance Debt Debt Disclosure [Text Block] Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract] Discontinued Operations Disclosures [Table] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Groups, Including Discontinued Operations, Name [Domain] Disposal Groups, Including Discontinued Operations, Name [Domain] Globetec [Member] Globetec Business [Member] Globetec Business [Member] Discontinued Operations Disclosures [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Revenue Disposal Group, Including Discontinued Operation, Revenue Loss from operations, before tax Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Benefit from income taxes Discontinued Operation, Tax Effect of Discontinued Operation Net loss from discontinued operations Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] Current assets Assets of Disposal Group, Including Discontinued Operation, Current Long-term assets Assets of Disposal Group, Including Discontinued Operation, Noncurrent Assets of discontinued operations Assets of Disposal Group, Including Discontinued Operation Current liabilities of discontinued operations Liabilities of Disposal Group, Including Discontinued Operation, Current Income Taxes Income Tax Disclosure [Text Block] Share-based Compensation [Abstract] Stock-Based Compensation and Other Employee Benefit Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Other Retirement Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Statement of Financial Position [Abstract] Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Treasury stock, shares Interest expense: Interest Expense [Abstract] Contractual and other interest expense Interest Expense, Debt, Excluding Amortization Accretion of senior convertible note discount Amortization of Debt Discount (Premium) Amortization of deferred financing costs Amortization of Financing Costs Total interest expense Interest Expense, Debt Interest income Investment Income, Interest Interest expense, net Schedule of Multi-Employer Plans [Table] Schedule of Multiemployer Plans [Table] Workforce Subject to Collective Bargaining Arrangements [Member] Workforce Subject to Collective Bargaining Arrangements [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Multi-employer Plans, Postretirement Benefit [Member] Multiemployer Plans, Postretirement Benefit [Member] Multi-Employer Plans [Line Items] Multiemployer Plans [Line Items] Multi-employer plans, covered employees Entity Number Of Employees During Period Number of employees employed by the entity over a period of time Multi-employer plans, contributions Multiemployer Plan, Period Contributions Risks and Uncertainties [Abstract] Concentration Risk [Table] Concentration Risk [Table] Ten Largest Customers [Member] Ten Largest Customers [Member] Ten Largest Customers [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Number of customers Number Of Customers1 Number Of Customers Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Foreign Currency [Member] Accumulated Translation Adjustment [Member] Available-for-Sale-Securities [Member] Accumulated Net Unrealized Investment Gain (Loss) [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated other comprehensive loss, beginning balance Accumulated Other Comprehensive Income (Loss), Net of Tax Activity before reclassifications, net of tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Reclassifications, net of tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Activity, net of tax Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss, ending balance Earnings Per Share [Abstract] Earnings Per Share [Table] Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table] 2009 Convertible Notes [Member] 2009 Senior Convertible Notes [Member] 2009 Senior Convertible Notes Earnings Per Share [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Net income attributable to MasTec: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Net income, continuing operations - basic Income (Loss) from Continuing Operations Attributable to Parent Interest expense, net of tax, 2009 Convertible Notes Interest on Convertible Debt, Net of Tax Net loss from discontinued operations - basic and diluted Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Net income attributable to MasTec - diluted Net Income (Loss) Available to Common Stockholders, Diluted Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average shares outstanding - basic Dilutive common stock equivalents Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Dilutive premium shares, 2011 Convertible Notes Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Dilutive shares, 2009 Convertible Notes Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Weighted average shares outstanding - diluted Schedule of Multi-Employer Plan Contribution Details Schedule of Costs of Retirement Plans [Table Text Block] Statement [Table] Statement [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] 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] 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 Goodwill Goodwill Other intangible assets, net Other long-term assets, including discontinued operations (See Note 4) 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 Acquisition-related contingent consideration, net of current portion Other Sundry Liabilities, Noncurrent Other liabilities Other Liabilities, Noncurrent Commitments and contingencies (See Note 16) Commitments and Contingencies Equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $1.00 par value; authorized shares - 5,000,000; issued and outstanding shares - none Preferred Stock, Value, Issued Common stock, $0.10 par value; authorized shares - 145,000,000; issued shares - 86,993,988 and 86,725,372 as of March 31, 2014 and December 31, 2013, respectively Common Stock, Value, Issued Capital surplus Additional Paid in Capital, Common Stock Contributed shares (See Note 11) Other Additional Capital Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Treasury stock, at cost; 9,467,286 shares as of both March 31, 2014 and December 31, 2013 Treasury Stock, Value Total MasTec, Inc. shareholders' equity Stockholders' Equity Attributable to Parent Non-controlling interests Stockholders' Equity Attributable to Noncontrolling Interest Total equity Schedule of Property And Equipment, Net Property, Plant and Equipment [Table Text Block] Schedule of Share Activity Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Schedule of Changes in Accumulated Other Comprehensive Loss Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Condensed Income Statement [Table] Condensed Unaudited Consolidating Statements of Operations and Comprehensive Income [Line Items] Condensed Income Statements, Captions [Line Items] Costs of revenue, excluding depreciation and amortization Other (income) expense, net Benefit from (provision for) income taxes Net loss from discontinued operations Equity in income from subsidiaries, net of tax Income (Loss) from Subsidiaries, Net of Tax Net income attributable to non-controlling interests Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Cash Surrender Value [Member] Cash Surrender Value [Member] Foreign Currency Translation Adjustments [Member] 4.875% Senior Notes [Member] Four Point Eight Seven Five Percent Senior Notes [Member] FourPointEightSevenFivePercentSeniorNotes [Member] Fair value measurements, valuation techniques Fair Value Measurements, Valuation Techniques Debt instrument, interest rate Debt Instrument, Interest Rate, Stated Percentage Additions from new business combinations, acquisition-related contingent consideration Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Payments of acquisition-related contingent consideration Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Foreign currency translation adjustments included in other comprehensive income, acquisition-related contingent consideration Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Weighted Average [Member] Weighted Average [Member] Number of conversion shares, principal amount Debt Instrument, Convertible, Number of Equity Instruments Weighted average actual per share price Share Price During Period Price of a single share of a number of saleable stocks of a company over a period of time. Weighted average premium value Debt Instrument, Convertible, If-converted Value in Excess of Principal Weighted average equivalent premium shares Summary of Assets, Liabilities and Results of Operations from Discontinued Operations Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block] Statement of Comprehensive Income [Abstract] Net income Other comprehensive (loss) income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Activity, net of tax (See Note 13) Comprehensive income Comprehensive income attributable to non-controlling interests Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to MasTec, Inc. Comprehensive Income (Loss), Net of Tax, Attributable to Parent 2014 and 2013 Acquisitions [Member] 2014 and 2013 Acquisitions [Member] 2014 and 2013 Acquisitions [Member] 2014 Acquisitions [Member] Acquisitions During 2014 [Member] Acquisitions During 2014 [Member] Big Country [Member] Big Country [Member] Other 2013 Acquisitions [Member] Other 2013 Acquisitions [Member] Other 2013 Acquisitions [Member] Business combination, provisional information, initial accounting incomplete, items Business Combination, Provisional Information, Initial Accounting Incomplete, Items Business combination, provisional information, initial accounting incomplete, reasons Business Combination, Provisional Information, Initial Accounting Incomplete, Reasons Business combination, description of acquired entity Business Acquisition, Description of Acquired Entity Acquisition payments in cash Payments to Acquire Businesses, Gross Estimated fair value of contingent consideration Business Combination, Consideration Transferred, Liabilities Incurred Earn-out period Earn Out Period Earn out period. Effective date of acquisition Business Acquisition, Effective Date of Acquisition Business combination, percentage of voting interests acquired Business Acquisition, Percentage of Voting Interests Acquired Business combination, name of acquired entity Business Acquisition, Name of Acquired Entity Business combination, acquisition costs Business Combination, Acquisition Related Costs Earnings Per Share Earnings Per Share [Text Block] Computation of earnings per share, methodology Earnings Per Share Reconciliation Disclosure Principal amount Debt Instrument, Face Amount Conversion price per share Debt Instrument, Convertible, Conversion Price Anti-dilutive common stock equivalents, shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Condensed Financial Statements [Table] Condensed Financial Statements [Table] Condensed Unaudited Consolidating Financial Statements [Line Items] Condensed Financial Statements, Captions [Line Items] Capital Lease 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segments Segment Reporting, Description of All Other Segments Utilities customers, percentage of consolidated communications revenue Intangible assets and goodwill, net Schedule of Stock-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Restricted Stock Plan [Member] Restricted Stock [Member] Stock-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Restricted Share Award Activity, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Non-vested restricted shares, beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than 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Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Line of credit facility, revolving loan sublimit Line of Credit, Revolving Loan Sublimit Portion of maximum borrowing capacity available in other currency Line of credit facility, interest rate Line of Credit Facility, Interest Rate at Period End Letters of credit outstanding Letters of Credit Outstanding, Amount Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Line of credit facility, capacity available for issuance of letters of credit Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases Unused credit facility fee Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Schedule Of Fair Values Of Financial Assets And Liabilities Measured On A Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of Fair 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Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Intersegment Eliminations [Member] Intersegment Eliminations [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract] Carrying Amount [Member] Reported Value Measurement [Member] Senior notes Notes Payable, Fair Value Disclosure Convertible notes Convertible Debt, Fair Value Disclosures Debt instrument, weighted average interest rate Debt, Weighted Average Interest Rate Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Pending Litigation [Member] Pending Litigation [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Sunlight Entities [Member] Sunlight Entities [Member] Sunlight Entities [Member] Sunlight General Somerset [Member] Sunlight General Somerset [Member] Sunlight General Somerset [Member] Sunlight General 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Insurance [Member] Health Insurance Product Line [Member] Other Non-Current Assets [Member] Commitments and Contingencies [Line Items] Pending litigation, number Number1 Number of, or count of, a particular item that is disclosed. Contract price, pending litigation Contracts Receivable, Claims and Uncertain Amounts Liens sought, pending litigation Liens Sought Liens Sought Letters of credit, outstanding amount Self insurance reserve Self Insurance Reserve Self insurance reserve, non-current Self Insurance Reserve, Noncurrent Cash collateral held by insurance carriers Pledged Assets Separately Reported, Other Assets Pledged as Collateral, at Fair Value Other guarantees, description Guarantor Obligations, Origin and Purpose General warranty, description Standard Product Warranty Description Lease Obligations Leases of Lessee Disclosure [Text Block] Statement of Cash Flows [Abstract] Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate by Type [Axis] Change in Accounting Estimate, Type [Domain] Change in Accounting Estimate, Type [Domain] Contracts Accounted for under Percentage of Completion [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Operating Expense [Member] Operating Expense [Member] Stock Compensation Plan [Member] Stock Compensation Plan [Member] Other Significant Noncash Transaction [Axis] Other Significant Noncash Transaction [Axis] Other Significant Noncash Transaction, Name [Domain] Other Significant Noncash Transaction, Name [Domain] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash (used in) provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Non-cash interest expense, including write-off of deferred financing costs on redeemed debt Amortization of Financing Costs and Discounts Non-cash stock-based compensation expense Excess tax benefit from stock-based compensation Provision for deferred income taxes Deferred Income Tax Expense (Benefit) Provision for losses on construction projects, net Other Noncash Income (Expense) Provision for losses on operating assets Provision for Other Losses (Gains) losses on sales of assets Gain (Loss) on Sale of Assets and Asset Impairment Charges Changes in assets and liabilities, net of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts and Other Receivables Inventories Increase (Decrease) in Inventories Other assets, current and non-current portion Increase (Decrease) in Other Operating Assets Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Billings in excess of costs and earnings Increase (Decrease) in Billing in Excess of Cost of Earnings Book overdrafts Increase (Decrease) in Book Overdrafts Other liabilities, current and non-current portion Increase (Decrease) in Other Operating Liabilities Net cash (used in) provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows (used in) provided by investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Cash paid for acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Capital expenditures Payments to Acquire Productive Assets Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Payments for other investments Payments for (Proceeds from) Investments Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows provided by (used in) financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from credit facility Proceeds from Long-term Lines of Credit Repayments of credit facility Repayments of Long-term Lines of Credit Proceeds from issuance of senior notes Proceeds from Unsecured Notes Payable Repayment of senior notes Repayments of Unsecured Debt Repayments of other borrowings Repayments of Other Long-term Debt Payments of capital lease obligations Repayments of Long-term Capital Lease Obligations Payments of tax withholdings and proceeds from stock-based awards, net Proceeds from (Repurchase of) Equity Excess tax benefit from stock-based compensation Excess Tax Benefit from Share-based Compensation, Financing Activities Payments of acquisition-related contingent consideration Proceeds from (Payments for) Other Financing Activities Payments of financing costs, including call premiums on extinguishment of debt Payments of Financing Costs Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Net effect of currency translation on cash Effect of Exchange Rate on Cash and Cash Equivalents Cash and cash equivalents - beginning of period Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations Cash and cash equivalents - end of period Cash and cash equivalents of discontinued operations Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Cash and cash equivalents of continuing operations Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid Income taxes paid, net of refunds Income Taxes Paid, Net Supplemental disclosure of non-cash information: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Equipment acquired under capital lease Capital Lease Obligations Incurred Equipment acquired under financing arrangements Notes Issued Value of acquisition-related contingent consideration Amortization of intangible assets Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Unaudited Consolidating Statements of Cash Flows [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Net cash (used in) provided by operating activities Payments for other investments Proceeds from (repayments of) credit facility Proceeds from (Repayments of) Lines of Credit Proceeds from senior notes, net Proceeds from (Repayments of) Notes Payable Repayments of other borrowings and capital lease obligations Repayments of Other Debt Proceeds from (payments for) other financing activities Net financing activities and advances (to) from consolidated affiliates Net Financing Activities And Advances From Consolidated Affiliates Net financing activities and advances (to) from consolidated affiliates. Schedule of Change in Accounting Estimate [Table] Schedule of Change in Accounting Estimate [Table] As Previously Reported [Member] Scenario, Previously Reported [Member] Adjustments [Member] Scenario, Adjustment [Member] Measurement Period Adjustments [Member] Purchase Price Allocation Adjustments [Member] Measurement Period Adjustments [Line Items] Change in Accounting Estimate [Line Items] Current assets Current liabilties Employee Stock Option Plan [Member] Employee Stock Option [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 Intrinsic value of vested awards 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 Intrinsic value of stock options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Proceeds from stock options exercised 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