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and Gas Oil And Gas Segment [Member] Engineering, construction and maintenance services for oil and natural gas pipelines and processing facilities for the energy and utilities industries. 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Other current assets Other Assets, Current Change order or claim approval process, term within which expected to be completed Unapproved Change Orders And/Or Claims, Expected Term For Approval Expected length of time within which an unapproved change order or claim is approved by the customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. 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Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Supplemental disclosure of non-cash information: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Total MasTec, Inc. 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Total minimum lease payments Finance Lease, Liability, to be Paid Finance lease and other obligations Finance Lease And Other Obligations The carrying amount as of the balance sheet date for the aggregate of finance lease and other obligations. Finance lease obligations represents the present value of lessee's discounted obligation for lease payments from finance leases. Other obligations represents the carrying amount of debt obligations classified as other. 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Asset Acquisition [Axis] Asset Acquisition [Axis] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Property and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] All Executive Categories All Executive Categories [Member] Repayments of credit facilities and term loans Repayments of Long-Term Lines of Credit Number of equipment companies acquired Number Of Companies Equity Interest Acquired Number Of Companies Equity Interest Acquired Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Property and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Related Party Transaction [Domain] Related Party Transaction [Domain] Stock-based compensation, income tax benefits Share-Based Payment Arrangement, Expense, Tax Benefit Number of reportable segments Number of Reportable Segments Earnings Per Share [Abstract] Common stock, $0.10 par value: authorized shares - 145,000,000; issued shares - 99,272,155 and 99,093,134 (including 1,559,852 and 1,504,996 of unvested stock awards) as of March 31, 2024 and December 31, 2023, respectively Common Stock, Value, Issued General and administrative expenses General and Administrative Expense Trade Names Trade Names Trade Names [Member] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equipment Company Acquisition Two Equipment Company Acquisition Two [Member] Equipment Company Acquisition Two Senior Notes Senior Notes [Member] Total current assets Assets, Current Value of fair value in excess of carrying value Reporting Unit, Amount of Fair Value in Excess of Carrying Amount Equity investments, carrying value Equity method investments, net investment Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Payments of finance lease obligations Finance Lease, Principal Payments Schedule of Future Minimum Lease Commitments, Finance Leases Finance Lease, Liability, to be Paid, Maturity [Table Text Block] Accounts receivable, after allowance for credit loss Accounts Receivable, after Allowance for Credit Loss Earn-out liability Business Combination, Contingent Consideration, Liability All Individuals All Individuals [Member] Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Acquisitions, Goodwill, and Other Intangible Assets, Net Acquisitions, Goodwill, and Intangible Assets, Disclosure [Text Block] Acquisitions, Goodwill, and Intangible Assets, Disclosure Assets held under finance leases, location Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Entity Filer Category Entity Filer Category Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Statement [Table] Statement [Table] Total debt obligations Long-term Debt And Finance Lease Obligations, Including Current Maturities, Gross Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt and finance lease obligations including current maturities. Current Fiscal Year End Date Current Fiscal Year End Date Total debt, net of deferred financing costs Long-Term Debt and Lease Obligation, Including Current Maturities PEO Name PEO Name Thereafter Lessee, Operating Lease, Liability, To Be Paid, After Year Four Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid after the fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Concentration risk, percentage of total Concentration Risk, Percentage Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table] Segment, Reconciliation of Other Items from Segments to Consolidated [Table] Granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Schedule of Goodwill by Segment Schedule of Goodwill [Table Text Block] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Other Multiemployer Other Postretirement Benefits Plan [Member] 2028 Finance Lease, Liability, to be Paid, Year Four Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Former Owner Former Owner [Member] Former Owner Business combination, contingent consideration, current Business Combination, Contingent Consideration, Liability, Current Construction Services Construction Services [Member] Construction services. Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Payments for other investments Payments to Acquire Other Investments Corporate Corporate, Non-Segment [Member] Concentration Risk from Type of Arrangement Product Concentration Risk [Member] Consolidated depreciation and amortization Depreciation, Depletion and Amortization Segment EBITDA EBITDA Earnings before interest, taxes, depreciation and amortization ("EBITDA"), a non-U.S. GAAP financial measure. Schedule of Accounts Receivable, Net of Allowance, and Contract Assets and Liabilities [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Losses (gains) on sales and impairments of assets, net Gain (Loss) on Sale of Assets and Asset Impairment Charges Office equipment, furniture and internal-use software Furniture and Fixtures [Member] Debt instrument, interest rate (percentage) Debt Instrument, Interest Rate, Stated Percentage Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Lease Contractual Term [Domain] Lease Contractual Term [Domain] Power Delivery Power Delivery [Member] The engineering, construction and maintenance of electrical transmission lines and substations, primarily for the energy and utility industries. Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Total MasTec, Inc. shareholders’ equity Equity, Attributable to Parent Consolidation Items [Axis] Consolidation Items [Axis] HMG 2021 Acquisitions, Henkels & McCoy Group, Inc. [Member] 2021 Acquisitions, Henkels & McCoy Group, Inc. Measurement input Goodwill Impairment Testing, Measurement Input Goodwill Impairment Testing, Measurement Input Multiemployer plans, covered employees (in number of employees) Multiemployer Plan, Number of Employees Covered Number of reporting units under previous reporting structure Reporting Unit, Previous Qualitative Assessments, Number Reporting Unit, Previous Qualitative Assessments, Number Restricted Stock Awards Restricted Stock [Member] Schedule of Stock-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Finance Leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Reporting Unit [Axis] Reporting Unit [Axis] Deferred revenue, revenue recognized Contract with Customer, Liability, Revenue Recognized Concentration Risk Type [Axis] Concentration Risk Type [Axis] Long-term debt, including finance leases Long-term debt Long-Term Debt and Lease Obligation Loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Equity investments, adjusted cost basis, amount Equity Securities without Readily Determinable Fair Value, Amount Unbilled receivables Unbilled Contracts Receivable Noncontrolling interest, percentage of voting interests acquired Noncontrolling Interest, Percentage of Voting Interests Acquired Noncontrolling Interest, Percentage of Voting Interests Acquired Other Credit Facilities Foreign Line of Credit [Member] Property and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Proceeds from sale of receivables Transfer of Financial Assets Accounted for as Sales, Cash Proceeds Received for Assets Derecognized, Amount Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Leases, remaining lease terms Lessee, Lease, Term Of Contract Term of lessee's lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Entity Emerging Growth Company Entity Emerging Growth Company Less unamortized deferred financing costs Debt Issuance Costs, Net Capital expenditures Payments to Acquire Productive Assets Other intangible assets, net Other intangible assets, net, beginning balance Other intangible assets, net, ending balance Intangible Assets, Net (Excluding Goodwill) Thereafter Finance Lease, Liability, To Be Paid, After Year Four Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after the fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Condensed Unaudited Consolidated Statements of Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Additions from new business combinations Intangible Assets Acquired, Gross (Excluding Goodwill) Amount of increase in intangible assets, excluding goodwill, from an acquisition. Document Fiscal Period Focus Document Fiscal Period Focus Restricted Shares Restricted Stock And Restricted Stock Units [Member] Stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met ("Restricted Stock") or share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met ("Restricted Stock Units"). Restricted Stock Awards and Restricted Stock Units are together referred to as "Restricted Shares". 2025 Lessee, Operating Lease, Liability, to be Paid, Year One Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] 2028 Lessee, Operating Lease, Liability, to be Paid, Year Four Title Trading Arrangement, Individual Title Business acquisition, equity interest issued or issuable, value assigned Business Acquisition, Equity Interest Issued or Issuable, Value Assigned Non-cash stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense CCI Cross Country Infrastructure [Member] Cross Country Infrastructure Services, Inc. ("CCI") (business name). Waha JVs Waha JVs [Member] Trans-Pecos Pipeline, LLC ("TPP") (business name) and Comanche Trail Pipeline, LLC ("CTP") (business name), together referred to as the "Waha JVs". Common Stock Common Stock [Member] Individual: Individual [Axis] Finance leases, assets, gross Finance Lease, Right-of-Use Asset, before Accumulated Amortization City Area Code City Area Code Entity Address, Postal Zip Code Entity Address, Postal Zip Code Type of Agreement [Axis] Product and Service [Axis] Earnings Per Share Earnings Per Share [Text Block] Income Statement Location [Domain] Income Statement Location [Domain] Corporate Joint Venture Corporate Joint Venture [Member] Loss per share (Note 2): Earnings Per Unit [Abstract] Equity method investments, ownership percentage Equity Method Investment, Ownership Percentage Document Fiscal Year Focus Document Fiscal Year Focus Geographical [Domain] Geographical [Domain] Weighted average interest rate (percentage) Debt, Weighted Average Interest Rate Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest Distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Operating leases, term of contract Lessee, Operating Lease, Term of Contract Minimum Low Minimum [Member] 2023 Acquisitions 2023 Acquisitions [Member] 2023 Acquisitions Joint Ventures That Provide Electrical Transmission Infrastructure Services Joint Ventures That Provide Electrical Transmission Infrastructure Services [Member] Joint venture(s) that provide(s) electrical transmission infrastructure services. Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Receivables [Abstract] Receivables [Abstract] Business, Basis of Presentation and Significant Accounting Policies Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Equity method investments, distributions of earnings received, operating cash flows Proceeds from Equity Method Investment, Distribution Exercise Price Award Exercise Price Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract] Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract] Number of joint ventures Number of Joint Ventures Number of joint ventures in which the Company has an interest. Other comprehensive income Other Comprehensive Income (Loss), Net of Tax 2022 Term Loan Facility 2022 Term Loans [Member] 2022 Term Loans Acquisition-related contingent consideration liabilities, range of potential undiscounted earn-out liabilities, high Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Equity, Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] Fair Value Disclosure of Liabilities Not Measured at Fair Value [Line Items] Fair Value Disclosure, Asset and Liability, Not Measured at Fair Value [Line Items] Assets Assets [Abstract] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] Fair Value Disclosure of Liabilities Not Measured at Fair Value [Table] Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] Revenue recognition, changes in contract estimates, result from margin decreases Changes In Contract Estimates, Cost-To-Cost Measure Of Progress, Financial Effect From Margin Increases (Decreases) Changes In Contract Estimates, Cost-To-Cost Measure Of Progress, Financial Effect From Margin Increases (Decreases) Other operating income Other Operating Income Payments for stock-based awards Payment, Tax Withholding, Share-Based Payment Arrangement Other Current Assets Other Current Assets [Member] Net loss Net loss Net (loss) income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Income tax refunds, net of payments Income Taxes Paid, Net Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Retirement Plan Type [Axis] Retirement Plan Type [Axis] Acquisition-related contingent consideration liabilities, additions from new business combinations Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Foreign currency translation (losses) gains, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Payments to Acquire Interest in Subsidiaries and Affiliates Payments to Acquire Interest in Subsidiaries and Affiliates Other investing activities, net Payments for (Proceeds from) Other Investing Activities Commitments and Contingencies Commitments Contingencies and Guarantees [Text Block] Joint Venture Civil Construction Project Joint Venture Civil Construction Project [Member] Ownership interest in a civil construction project. Retained Earnings Retained Earnings [Member] Business acquisition, goodwill, expected tax deductible amount Business Acquisition, Goodwill, Expected Tax Deductible Amount Leases, renewal term Lessee, Lease, Renewal Term Term of lessee's lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Reconciliation of Consolidated Income before Income Taxes to EBITDA Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Total liabilities and equity Liabilities and Equity Other long-term assets Other Assets, Noncurrent Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Ownership [Domain] Ownership [Domain] Net loss attributable to MasTec: Net Income (Loss) Attributable to Parent, Diluted [Abstract] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Unrealized gains (losses) on investment activity, net of tax Unrealized gains (losses) on equity investee activity, net of tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Basic loss per share (in dollars per share) Earnings Per Share, Basic Interest expense, net Discount charges Interest Revenue (Expense), Net Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Accounting Policies [Abstract] Accounting Policies [Abstract] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] EBITDA Reconciliation: Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] 2024, remaining nine months Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Finance lease liability, current, location Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Net loss - diluted Net Income (Loss) Available to Common Stockholders, Diluted Arrangement Duration Trading Arrangement Duration Entity Address, City or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Related Party Related Party [Member] Schedule of Financial Information by Reportable Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Variable interest entity, percent Asset Acquisition, Percentage Of Voting Interest Acquired Asset Acquisition, Percentage Of Voting Interest Acquired Principles of Consolidation Consolidation, Policy [Policy Text Block] Advanced Receivable Arrangement Advanced Receivable Arrangement [Member] Advanced Receivable Arrangement Document Transition Report Document Transition Report Award Timing Predetermined Award Timing Predetermined [Flag] Unsecured Debt Unsecured Debt [Member] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Stock repurchase program, remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Purchase of non-controlling interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Termination Date Trading Arrangement Termination Date Credit Facility Domestic Line of Credit [Member] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Unrealized gain (loss) included in other income Business Combinations, Contingent Consideration, Unrealized Gain (Loss) Business Combinations, Contingent Consideration, Unrealized Gain (Loss) Stock-based compensation, vested awards, net income tax benefit (deficiency) Employee Service Share-Based Compensation, Net Tax Benefit (Deficiency) From Vesting Of Share-Based Payment Awards Amount of net tax benefit (deficiency) from vesting of share-based payment awards. Fair Value, Financial Instruments Measured on a Recurring Basis [Line Items] Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Non-Amortizing Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Long-term debt obligations Long-Term Debt, Gross Unrealized gains (losses) on equity investee activity, before tax Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax Adjustments to reconcile net loss to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Related Party Transactions [Abstract] Related Party Transactions [Abstract] All Trading Arrangements All Trading Arrangements [Member] Measurement Input Type [Axis] Measurement Input Type [Axis] Less accumulated depreciation and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Other Intangible Assets [Line Items] Intangible Assets [Line Items] Line items for intangible assets, excluding goodwill. All Adjustments to Compensation All Adjustments to Compensation [Member] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Award Timing Disclosures [Line Items] Confluence Confluence [Member] Confluence Networks, LLC (business name), referred to as "Confluence." Compensation Amount Outstanding Recovery Compensation Amount Infrastructure Energy Alternatives, Inc. Infrastructure Energy Alternatives, Inc. [Member] Infrastructure Energy Alternatives, Inc. Schedule of Accounts Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Comprehensive income (loss) attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Stock-based compensation, vested awards, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Provision for credit losses Accounts Receivable, Credit Loss Expense (Reversal) Depreciation Cost, Depreciation Executive Officers Executive Officer [Member] New Term Loan Facility, Five-Year Tranche New Term Loan Facility, Five-Year Tranche [Member] New Term Loan Facility, Five-Year Tranche Canceled/forfeited (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Customers Representing 10% Or More Of Company Customers Representing 10% Or More Of Company [Member] Customers Representing 10% Or More Of Company Surety Bonds Surety Bond [Member] Multiemployer plan, employer contribution, cost Multiemployer Plan, Employer Contribution, Cost Total lease obligations, net of interest Finance Lease, Liability Canceled/forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Business acquisition, number of shares issued (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Equipment Leases Equipment Leases [Member] Amount pertaining to leasing of equipment. Insider Trading Arrangements [Line Items] Subcontracting Arrangements Subcontracting Arrangements [Member] The performance of services under a subcontracting arrangement. Contract with customer, unapproved change orders and/or claims, amount Contracts Receivable, Claims and Uncertain Amounts, Expected to be Collected in Next 12 Months Contingent Consideration, Value Of Common Stock Contingent Consideration, Value Of Additional Payments [Member] Contingent Consideration, Value Of Additional Payments Related Party, Type [Axis] Related Party, Type [Axis] Employee Group Medical Claims Group Insurance Policy [Member] Segments and Related Information [Table] Schedule of Segment Reporting Information, by Segment [Table] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Performance Obligation, Timing Of Recognition [Domain] Performance Obligation, Timing Of Recognition [Domain] Performance Obligation, Timing Of Recognition [Domain] Master Service and Other Service Agreements Master Service And Other Service Agreements [Member] Master service and other service agreements. Other Other Segments [Member] Entity Registrant Name Entity Registrant Name Facility Leases Facility Leases [Member] Amount pertaining to leasing of facilities. Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] Other assets, current and long-term portion Increase (Decrease) in Other Operating Assets Issuance of shares in connection with acquisition (in shares) Stock Issued During Period, Shares, Acquisitions Adjustment to Compensation, Amount Adjustment to Compensation Amount Proceeds from sales of property and equipment Proceeds from Sale of Property, Plant, and Equipment Cost of Revenue, Excluding Depreciation and Amortization Cost of Sales [Member] Finite And Indefinite Lived Intangible Assets By Major Class [Domain] Finite And Indefinite Lived Intangible Assets By Major Class [Domain] Finite And Indefinite Lived Intangible Assets By Major Class [Domain] Lease Contractual Term [Axis] Lease Contractual Term [Axis] All Acquisitions All Acquisitions [Member] All acquisitions completed. Non-controlling interests Equity, Attributable to Noncontrolling Interest Document Period End Date Document Period End Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Adoption Date Trading Arrangement Adoption Date Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Issuance of restricted shares, net Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Long-term portion of lease obligations, net of interest Finance Lease, Liability, Noncurrent Finance leases, weighted average discount rate, percent Finance Lease, Weighted Average Discount Rate, Percent Treasury Stock Treasury Stock, Common [Member] Entity Central Index Key Entity Central Index Key Non-cash interest expense, net Amortization of Debt Issuance Costs and Discounts Indemnities, accrued project close-out liabilities Loss Contingency Accrual Segments and Related Information [Line Items] Segment Reporting Information [Line Items] Payments for life insurance policies Payment to Acquire Life Insurance Policy, Investing Activities Non-cash stock-based compensation expense Share-Based Payment Arrangement, Expense Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Benefit from income taxes Income Tax Expense (Benefit) Foreign Operations Non-US [Member] Finance leases, assets, net Finance Lease, Right-of-Use Asset, after Accumulated Amortization Accrued salaries and wages Employee-related Liabilities, Current Business combination, acquisition and integration related costs Business Combination, Integration Related Costs Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Number of operating segments Number of Operating Segments Revenue Benchmark Revenue Revenue Benchmark [Member] Name Trading Arrangement, Individual Name Operating costs and expenses Operating Costs and Expenses Proportionately consolidated non-controlled joint venture, ownership percentage Proportionately Consolidated Joint Venture Ownership Percentage The percentage interest in a proportionately consolidated joint venture. Performance Obligation, Timing Of Recognition [Axis] Performance Obligation, Timing Of Recognition [Axis] Performance Obligation, Timing Of Recognition Amortization of intangible assets Cost, Amortization Compensation expense Compensation Expense, Excluding Cost of Good and Service Sold Equity [Abstract] Equity [Abstract] Operating leases, weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Finite And Indefinite Lived Intangible Assets By Major Class [Axis] Finite And Indefinite Lived Intangible Assets By Major Class [Axis] Finite And Indefinite Lived Intangible Assets By Major Class Entity [Domain] Entity [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Amendment Flag Amendment Flag Other Intangible Assets [Rollforward] Intangible Assets (Excluding Goodwill) [Roll Forward] Rollforward of intangible assets, excluding goodwill. Legal Entity [Axis] Legal Entity [Axis] Customer Relationships and Backlog Customer-Related Intangible Assets [Member] Other Subcontracting Arrangements Subcontracting Arrangement Two [Member] Subcontracting Arrangement Two Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash paid for acquisitions, net of cash acquired Cash paid for acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Operating leases, weighted average discount rate, percent Operating Lease, Weighted Average Discount Rate, Percent Senior notes, gross carrying amount Senior Notes Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Comprehensive loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest New Term Loan Facility New Term Loan Facility [Member] New Term Loan Facility Credit Facility [Domain] Credit Facility [Domain] Treasury stock acquired (in shares) Treasury Stock, Shares, Acquired Acquisition-related contingent consideration liabilities, estimated fair value Obligations, Fair Value Disclosure Ten Largest Customers Ten Largest Customers [Member] Ten largest customers. Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Contingent Consideration Type [Domain] Contingent Consideration Type [Domain] Finance lease liability, long-term, location Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Finance leases, weighted average remaining lease term (in years) Finance Lease, Weighted Average Remaining Lease Term Certain Entities, Each Accounted for Using Equity Method Investments Certain Entities, Each Accounted for Using Equity Method Investments [Member] Certain Entities, Each Accounted for Using Equity Method Investments Diluted weighted average common shares outstanding (in shares) Weighted average shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Chairman, Board of Directors Board of Directors Chairman [Member] Capitalized internal-use software, gross Capitalized Computer Software, Gross Less amounts representing interest Finance Lease, Liability, Undiscounted Excess Amount Company Selected Measure Amount Company Selected Measure Amount Capital surplus Additional Paid in Capital, Common Stock Capital Surplus Additional Paid-in Capital [Member] New Term Loan Facility, Three-Year Tranche New Term Loan Facility, Three-Year Tranche [Member] New Term Loan Facility, Three-Year Tranche Balance Sheet Location [Axis] Balance Sheet Location [Axis] Total assets Consolidated assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Equity in earnings of unconsolidated affiliates, net Equity in earnings of unconsolidated affiliates, net Equity method investments, equity in earnings (losses) Income (Loss) from Equity Method Investments Share Repurchase Program [Axis] Share Repurchase Program [Axis] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Cover [Abstract] Cover [Abstract] Equipment Equipment [Member] Earn-Out Liabilities Earn-out Arrangements [Member] Acquisition-related contingent consideration and other liabilities is composed of earn-outs, which represent the estimated fair value of future amounts payable for businesses, including for mandatorily redeemable non-controlling interests (together, “Earn-outs”), that are contingent upon the acquired business achieving certain levels of earnings in the future. Accounts Receivable, Net of Allowance, and Contract Assets and Liabilities Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Non-cash stock-based compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition United States UNITED STATES Business combinations, number of acquisitions Number of Businesses Acquired Self-insurance reserve, non-current Self Insurance Reserve, Noncurrent Debt instrument, interest rate during period Debt Instrument, Interest Rate During Period Other long-term liabilities Other Liabilities, Noncurrent Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Non-NEOs Non-NEOs [Member] Total minimum lease payments Lessee, Operating Lease, Liability, to be Paid Revenue recognition, remaining performance obligations, contract price allocated Revenue, Remaining Performance Obligation, Amount Construction in progress Construction in Progress [Member] Pension Pension Plan [Member] Finance leases, assets, depreciation Finance Lease, Right-of-Use Asset, Amortization Segments and Related Information Segment Reporting Disclosure [Text Block] Net decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Equity Component [Domain] Equity Component [Domain] Less current portion Finance Lease, Liability, Current Adjustment to Compensation: Adjustment to Compensation [Axis] ESPP purchase price, percent Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Multiemployer plans, withdrawal obligation, monthly payment amount Multiemployer Plans, Withdrawal Obligation, Monthly Payment Amount Multiemployer Plans, Withdrawal Obligation, Monthly Payment Amount Financing commitments (up to) Contractual Obligation Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Line of credit facility, term loan, amount of quarterly principal installment payments Line of Credit Facility, Periodic Payment, Principal Workers' Compensation, General and Automobile Policies Property, Liability and Casualty Insurance Product Line [Member] Scenario [Axis] Scenario [Axis] Debt Instrument [Line Items] Debt Instrument [Line Items] Basic weighted average common shares outstanding (in shares) Weighted average shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Former Owner Of Acquired Business Former Owner Of Acquired Business [Member] Former Owner Of Acquired Business Entity Current Reporting Status Entity Current Reporting Status Concentration Risk Type [Domain] Concentration Risk Type [Domain] Acquisition-related assumption of non-controlling interest Noncontrolling Interest, Increase from Business Combination Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Number of reporting units Number of Reporting Units Consolidated Entities [Domain] Consolidated Entities [Domain] Telecommunications Equity Method Investees Telecommunications Equity Method Investees [Member] Telecommunications Equity Method Investees Cash proceeds Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Related Party Transaction [Axis] Related Party Transaction [Axis] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Line of credit facility, unused facility fee (percentage) Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Segments [Axis] Segments [Axis] Statement [Line Items] Statement [Line Items] Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Scenario [Domain] Scenario [Domain] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Long-term line of credit Long-Term Line of Credit Interest rate on notes receivable Financing Receivable, Interest Rate Financing Receivable, Interest Rate Self-insurance reserve Self Insurance Reserve Proceeds from credit facilities Proceeds from Long-Term Lines of Credit Foreign Denomination Foreign Denomination [Member] Contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars, in Canadian dollars and/or Mexican pesos. Non-Controlling Interests Noncontrolling Interest [Member] Capitalized internal-use software, net Capitalized Computer Software, Net