Payables and Accruals [Abstract] Accounts Payable Accounts Payable and Accrued Liabilities Disclosure [Text Block] Business Combinations [Abstract] 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] Schuff [Member] Schuff [Member] Schuff [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Investments Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Investments Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, which were acquired at the acquisition date. Accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Costs and recognized earnings in excess of billings on uncompleted contracts Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Costs And Recognized Earnings This element refers to costs to business combination and recognized earnings in excess of billings on uncompleted contracts, acquired at the acquisition date. Prepaid expenses and other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets Inventories Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Property and equipment, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment GOODWILL Goodwill Trade names Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Tradename Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Tradename Other assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Assets Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Assets Total assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Accounts payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Accrued payroll and employee benefits Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Current Liabilities Accrued Payroll and Benefits Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them, assumed at the acquisition date. Accrued expenses and other current liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Accrued Expenses And Other Current Liabilities Amount of accrued expenses and other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date. Billings in excess of costs and recognized earnings on uncompleted contracts Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Excess Of Costs And Recognized Earnings Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Excess Of Costs And Recognized Earnings Accrued income taxes Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Accrued Income Taxes Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due, assumed at the acquisition date. Accrued interest Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Accrued Interest Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. Current portion of long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Deferred tax liability Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent Other liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Liabilities Noncontrolling interest Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncontrolling Interest Amount of noncontrolling interest assumed at the acquisition date. Total liabilities assumed Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Enterprise value Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Less fair value of noncontrolling interest Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value Purchase price attributable to controlling interest Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest Fair Value Disclosures [Abstract] Fair Value of Financial Instruments and Derivatives Fair Value Disclosures [Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] 10% Senior Secured Notes Due 2017 [Member] Ten Percentage Senior Secured Notes Due Two Thousand Seventeen [Member] Ten percentage senior secured notes due two thousand seventeen. 10% Senior Secured Exchange Notes Due 2017 [Member] Ten Percentage Senior Secured Exchange Notes Due Two Thousand Seventeen [Member] Ten percentage senior secured exchange notes due two thousand seventeen. 13% Senior Secured Notes Due 2016 [Member] Thirteen Percentage Senior Secured Notes Due Two Thousand Sixteen [Member] Thirteen percentage senior secured notes due two thousand sixteen. Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Alternate Base Rate [Member] Base Rate [Member] LIBOR Loans Borrowing Rate [Member] London Interbank Offered Rate (LIBOR) [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Note Payable Collaterized by Asset [Member] Note Payable Collaterized By Asset [Member] Note Payable Collaterized By Asset [Member] Note Payable Collaterized by Schuff's Property and Plant under Revolving Line of Credit Agreement [Member] Note Payable Collaterized By Property And Plant Under Revolving Line Of Credit Agreement [Member] Note Payable Collaterized By Property And Plant Under Revolving Line Of Credit Agreement [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] International LOC [Member] International Loc [Member] Refers to Line of Credit Agreement (the "International LOC") with Banco General, S.A. ("Banco General") . Debt Instrument [Line Items] Debt Instrument [Line Items] Senior Secured Notes Debt Instrument, Interest Rate, Stated Percentage Aggregate principal amount Debt Instrument, Repurchase Amount Percentage of redemption from aggregate principal amount Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed Premiums and other costs Premium For Early Debt Extinguishment Premium for early debt extinguishment. Deferred financing costs Deferred Financing Costs Included In Debt Restructuring Deferred financing costs included in debt restructuring. Original issue discount included in gain (loss) on early extinguishment or restructuring of debt Original Issue Discount Included In Debt Restructuring Original issue discount included in debt restructuring. Principal amount outstanding Long-term Debt, Gross Aggregate principle amount Debt Instrument, Face Amount Debt instrument term Debt Instrument, Term Debt instrument rate description Debt Instrument, Description of Variable Rate Basis Credit agreement interest rate Line of Credit Facility, Interest Rate During Period Increase in debt instrument rate Debt Instrument, Basis Spread on Variable Rate Issuance of note payable collaterized Proceeds from Notes Payable Line of credit amended date Line Of Credit Facility Amended Date Line Of Credit Facility Amended Date Extended maturity date Line of Credit Facility, Expiration Date Line of credit, maximum amount Line of Credit Facility, Maximum Borrowing Capacity Debt instrument, special interest on compensation fund Debt Instrument Special Interest On Compensation Fund Debt Instrument Special Interest On Compensation Fund Line of credit borrowings Line of Credit Facility, Current Borrowing Capacity Line of credit outstanding amount Long-term Line of Credit Credit facility available Line of Credit Facility, Remaining Borrowing Capacity Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Schedule of Error Corrections and Prior Period Adjustment Restatement [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] As Reported Scenario, Previously Reported [Member] Adjustments Scenario, Adjustment [Member] Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] NET INCOME (LOSS) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest OTHER COMPREHENSIVE INCOME (LOSS) Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustment Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Less: Comprehensive (income) attributable to the noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest COMPREHENSIVE INCOME ATTRIBUTABLE TO HC2 HOLDINGS, INC. Comprehensive Income (Loss), Net of Tax, Attributable to Parent Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Organization and Business Nature of Operations [Text Block] Inventory Disclosure [Abstract] Summary of Inventories Schedule of Inventory, Current [Table Text Block] Segment Reporting [Abstract] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Telecommunications [Member] Telecommunications [Member] This represents the Telecommunications segment of the entity. Life Sciences [Member] Life Science [Member] This represents the Life Sciences segment of the entity. Manufacturing [Member] Manufacturing [Member] This represents the Manufacturing segment of the entity. Corporate [Member] Corporate Segment [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States [Member] UNITED STATES United Kingdom [Member] UNITED KINGDOM Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] NET REVENUE Revenues LOSS FROM OPERATIONS Operating Income (Loss) CAPITAL EXPENDITURES Payments to Acquire Productive Assets Earnings Per Share [Abstract] Income (loss) from continuing operations attributable to HC2 Holdings, Inc. Income (Loss) from Continuing Operations Attributable to Parent Income (loss) from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Gain (loss) from sale of discontinued operations Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Net income (loss) – basic Net Income (Loss) Available to Common Stockholders, Basic Net income (loss) – diluted Net Income (Loss) Available to Common Stockholders, Diluted Weighted average common shares outstanding - basic (in USD per share) Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding - diluted (in USD per share) Weighted Average Number of Shares Outstanding, Diluted Basic income (loss) per common share: Income (Loss) from Extraordinary Items, Net of Tax, Per Basic Share [Abstract] Income (loss) from continuing operations attributable to HC2 Holdings, Inc. (in USD per share) Income (Loss) from Continuing Operations, Per Basic Share Income (loss) from discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Gain (loss) from sale of discontinued operations (in USD per share) Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Per Basic Share Net Income (Loss) attributable to HC2 Holdings, Inc. (in USD per share) Earnings Per Share, Basic Diluted income (loss) per common share: Income (Loss) from Extraordinary Items, Net of Tax, Per Diluted Share [Abstract] Income (loss) from continuing operations attributable to HC2 Holdings, Inc. (in USD per share) Income (Loss) from Continuing Operations, Per Diluted Share Income (loss) from discontinued operations (in USD per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Gain (loss) from sale of discontinued operations (in USD per share) Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Per Diluted Share Net income (loss) attributable to HC2 Holdings, Inc. (in USD per share) Earnings Per Share, Diluted Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Treasury Stock Treasury Stock [Member] Earnings (Accumulated Deficit) Retained Earnings, Unappropriated [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Noncontrolling Interest Noncontrolling Interest [Member] Total Stockholders' Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Number of reportable geographic segments Number Of Geographic Reportable Segments This element represents the number of reportable geographic segments. Number of reportable operating segments Number Of Reportable Operating Segment This element represents the number of reportable operating segments. Number of single customer representing greater than 10% of revenues Segment Reporting, Disclosure of Major Customers Statement of Cash Flows [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (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] Provision for doubtful accounts receivable Provision for Doubtful Accounts Share-based compensation expense Share-based Compensation Depreciation and amortization Depreciation, Depletion and Amortization Amortization of deferred financing costs Amortization Of Deferred Financing Costs Amortization Of Deferred Financing Costs (Gain) loss on sale or disposal of assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property (Gain) loss on sale of investments Gain (Loss) on Sale of Investments Accretion of debt discount Accretion Expense Change in fair value of Contingent Value Rights Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Deferred income taxes Deferred Income Tax Expense (Benefit) Unrealized foreign currency transaction (gain) loss on intercompany and foreign debt Foreign Currency Transaction Gain (Loss), Unrealized Changes in assets and liabilities, net of acquisitions: Increase (Decrease) in Operating Capital [Abstract] (Increase) decrease in accounts receivable Increase (Decrease) in Accounts Receivable (Increase) decrease in costs and recognized earnings in excess of billings on uncompleted contracts Increase (Decrease) in Cost in Excess of Billing on Uncompleted Contract (Increase) decrease in inventories Increase (Decrease) in Inventories (Increase) decrease in prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets (Increase) decrease in other assets Increase (Decrease) in Other Operating Assets Increase (decrease) in accounts payable Increase (Decrease) in Accounts Payable Increase (decrease) in accrued interconnection costs Increase Decrease In Accrued Interconnection Costs The increase (decrease) during the reporting period in the value of interconnection cost incurred by the reporting entity, associated with underlying transactions that are classified as operating activities. Increase (decrease) in accrued payroll and employee benefits Increase (Decrease) in Employee Related Liabilities Increase (decrease) in accrued expenses, other current liabilities and other liabilities, net Increase (Decrease) in Accrued Liabilities Increase (decrease) in billings in excess of costs and recognized earnings on uncompleted contracts Increase (Decrease) in Billing in Excess of Cost of Earnings Increase (decrease) in accrued income taxes Increase (Decrease) in Income Taxes Payable Increase (decrease) in accrued interest Increase (Decrease) in Interest Payable, Net Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchase of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Sale of property and equipment and other assets Proceeds from Sale of Property, Plant, and Equipment Sale of investments, net Payments for (Proceeds from) Investments Cash from disposition of business, net of cash disposed Proceeds from Divestiture of Businesses, Net of Cash Divested Cash paid for business acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Purchase of noncontrolling interest Payments to Noncontrolling Interests Decrease in restricted cash Increase (Decrease) in Restricted Cash Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from long-term obligations Proceeds from Issuance of Long-term Debt Principal payments on long-term obligations Repayments of Long-term Debt Payment of fees on restructuring of debt Payments of Debt Restructuring Costs Proceeds from sale of common stock, net Proceeds from Issuance of Common Stock Proceeds from sale of preferred stock, net Proceeds from Issuance of Preferred Stock and Preference Stock Proceeds from the exercise of warrants and stock options Proceeds from Issuance of Warrants and Stock Option Exercised The cash inflow associated with the amount received from holders exercising their warrants and stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. Payment of dividend equivalents Payments of Capital Distribution Taxes paid in lieu of shares issued for share-based compensation Payments Related to Tax Withholding for Share-based Compensation Net cash provided by (used) in financing activities Net Cash Provided by (Used in) Financing Activities EFFECTS OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS Effect of Exchange Rate on Cash and Cash Equivalents NET CHANGE IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS, END OF PERIOD SUPPLEMENTAL CASH FLOW INFORMATION: Supplemental Cash Flow Elements [Abstract] Cash paid for interest Interest Paid, Net Cash paid for taxes Income Taxes Paid, Net Non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Capital lease additions Capital Lease Obligations Incurred Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Inventories Inventory Disclosure [Text Block] Remaining amount of goodwill of US reporting unit Disposal Group, Including Discontinued Operation, Goodwill Remaining amount of customer relationships of US reporting unit Disposal Group, Including Discontinued Operation, Intangible Assets Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock Options and RSUs [Member] Stock Options And Rsus [Member] Stock options and rsus. Warrants [Member] Warrant [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Dilutive securities included in computation of earnings per share, Stock Options and RSUs Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Dilutive securities included in computation of earnings per share, Waarants Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Dilutive common share equivalents Weighted Average Number Diluted Shares Outstanding Adjustment Antidilutive securities excluded from computation of earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule Of Sale Of Subsidiary [Abstract] Schedule Of Sale Of Subsidiary [Abstract] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] California Ironworkers Field Pension Trust [Member] California Ironworkers Field Pension Trust [Member] California Ironworkers Field Pension Trust [Member] Steelworkers Pension Trust [Member] Steelworkers Pension Trust [Member] Steelworkers Pension Trust [Member] Union Steelworkers [Member] Union Steelworkers [Member] Union Steelworkers [Member] April 1, 2014 and beyond [Member] April One Two Thousand Fourteen And Beyond [Member] April One Two Thousand Fourteen And Beyond [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Maximum [Member] Maximum [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Pension withdrawal liability Defined Benefit Pension Plan, Liabilities Defined benefit pension plan contribution made by employer Defined Benefit Plan, Contributions by Employer Percentage of employees covered under plan Percentage Of Employees Covered Under Defined Benefit Pension Plan Percentage Of Employees Covered Under Defined Benefit Pension Plan Discretionary matching contributions vested percentage Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage Profit share contributions, probationary period Probationary Period Probationary Period Discretionary matching contributions vested period Defined Benefit Plan Employers Matching Contribution Vesting Period Defined benefit plan employers matching contribution vesting period. Profit share contributions rate for each hour Profit Share Contribution Rate Per Hour Profit Share Contribution Rate Per Hour Accounts receivable, allowance for doubtful accounts receivable Allowance for Doubtful Accounts Receivable, Current Preferred stock, par value Temporary Equity, Par or Stated Value Per Share Preferred stock, shares authorized Temporary Equity, Shares Authorized Preferred stock, shares issued Temporary Equity, Shares Issued Preferred stock, shares outstanding Temporary Equity, 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 Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Accounting Policies [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Discontinued Operations Discontinued Operations, Policy [Policy Text Block] Foreign Currency Transactions Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign Currency Translation Foreign Currency Translation Policy [Text Block] Foreign currency translation. Accounts Receivable Receivables, Policy [Policy Text Block] Inventories Inventory, Policy [Policy Text Block] Investments Investment, Policy [Policy Text Block] Deferred Financing Costs Deferred Financing Fees Policy [Text Block] Deferred financing fees policy. Property, Plant and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Valuation of Long-lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Revenue and Cost Recognition Revenue Recognition, Policy [Policy Text Block] Income (Loss) Per Common Share Earnings Per Share, Policy [Policy Text Block] Reclassification Reclassification, Policy [Policy Text Block] Newly Adopted Accounting Principles New Accounting Pronouncements, Policy [Policy Text Block] Schedule of Error Corrections and Prior Period Adjustments Schedule of Error Corrections and Prior Period Adjustments [Table Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Statement of Comprehensive Income [Abstract] Less: Comprehensive (income) attributable to the noncontrolling interest Business Combinations Business Combination Disclosure [Text Block] ASSETS Assets [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Cash and cash equivalents Investments Investments Accounts receivable (net of allowance for doubtful accounts receivable of $2,089 and $2,476 at June 30, 2014 and December 31, 2013, respectively) Accounts Receivable, Net, Current Costs and recognized earnings in excess of billings on uncompleted contracts Costs in Excess of Billings, Current Inventories Inventory, Net Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Total current assets Assets, Current PROPERTY, PLANT AND EQUIPMENT – Net Property, Plant and Equipment, Net OTHER INTANGIBLE ASSETS – Net Other Intangible Assets, Net OTHER ASSETS Other Assets, Noncurrent TOTAL ASSETS Assets LIABILITIES, TEMPORARY AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued interconnection costs Accrued Interconnection Costs Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to interconnection costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued payroll and employee benefits Employee-related Liabilities, Current Accrued expenses and other current liabilities Other Accrued Liabilities, Current Billings in excess of costs and recognized earnings on uncompleted contracts Billings in Excess of Cost, Current Accrued income taxes Accrued Income Taxes, Current Accrued interest Interest Payable, Current Current portion of long-term debt Long-term Debt, Current Maturities Liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities Total current liabilities Liabilities, Current LONG-TERM DEBT Long-term Debt, Excluding Current Maturities DEFERRED TAX LIABILITY Deferred Tax Liabilities, Gross OTHER LIABILITIES Other Liabilities, Noncurrent Total liabilities Liabilities COMMITMENTS AND CONTINGENCIES Commitments and Contingencies TEMPORARY EQUITY Temporary Equity [Abstract] Preferred stock, $0.001 par value – 20,000,000 shares authorized; 30,000 and 0 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively Preferred Stock, Value, Issued Total temporary equity Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests STOCKHOLDERS' EQUITY: Equity [Abstract] Common stock, $0.001 par value – 80,000,000 shares authorized; 20,543,595 and 14,257,545 shares issued and 20,511,969 and 14,225,919 shares outstanding at June 30, 2014 and December 31, 2013, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings (accumulated deficit) Retained Earnings (Accumulated Deficit) Treasury stock, at cost – 31,626 shares at June 30, 2014 and December 31, 2013, respectively Treasury Stock, Value Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total HC2 Holdings, Inc. stockholders’ equity before noncontrolling interest Stockholders' Equity Attributable to Parent Non-controlling interest Stockholders' Equity Attributable to Noncontrolling Interest Total permanent equity TOTAL LIABILITIES, TEMPORARY AND STOCKHOLDERS’ EQUITY Liabilities and Equity Commitments and Contingencies Disclosure [Abstract] Purchase Obligations and Non-Cancellable Operating Leases, Including Continuing Obligations of Discontinued Operations Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] 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] Trade Names [Member] Trade Names [Member] Acquired Finite-Lived Intangible Assets [Line Items] Acquired Finite-Lived Intangible Assets [Line Items] Preliminary Estimated Useful Lives Finite-Lived Intangible Asset, Useful Life Preliminary Estimated Value Finite-lived Intangible Assets Acquired Property Plant and Equipment Useful Life and Values [Abstract] Property plant and equipment useful life and values. Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land [Member] Land [Member] Buildings [Member] Building [Member] Building and Leasehold Improvements [Member] Building And Leasehold Improvements [Member] Building And Leasehold Improvements [Member] Network Equipment [Member] Network Equipment [Member] Network equipment. Machinery and Equipment [Member] Machinery and Equipment [Member] Transportation Equipment [Member] Transportation Equipment [Member] Furniture and Fixtures [Member] Furniture and Fixtures [Member] EDP Equipment [Member] Other Machinery and Equipment [Member] Construction in Progress [Member] Construction in Progress [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, plant and equipment Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property, plant and equipment, net Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Distribution Type [Axis] Distribution Type [Axis] Distribution Type [Domain] Distribution Type [Domain] Subject to Limitation [Member] Limited [Member] Limited. Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Income tax expense Income Tax Expense (Benefit) United States operating loss carryforwards Operating Loss Carryforwards Substantial acquisitions percentage Substantial Acquisition Percentage The substantial equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. Preferred stock, shares issued Preferred Stock, Shares Issued Net operating loss carryforward annual limitation following ownership change Net Operating Loss Carryforward Annual Limitation Following Ownership Change Amount of net operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws on annual limitations following ownership change. Net operating loss carryforward incremental limitation Net Operating Loss Carryforward Incremental Limitation Net Operating Loss Carryforward Incremental Limitation Net operating loss carryforward annual limitation for first five years of ownership change Net Operating Loss Carryforward Annual Limitation For First Five Years Of Ownership Change Net Operating Loss Carryforward Annual Limitation For First Five Years Of Ownership Change Net operating loss carryforward annual limitation for next fifteen years of ownership change Net Operating Loss Carryforward Annual Limitation For Next Fifteen Years Of Ownership Change Net Operating Loss Carryforward Annual Limitation For Next Fifteen Years Of Ownership Change Raw materials Inventory, Raw Materials, Gross Work in process Inventory, Work in Process, Gross Finished goods Inventory, Finished Goods, Gross Inventories, net Receivables [Abstract] Costs incurred on contracts in progress Costs Incurred on Uncompleted Contracts in Progress Refers to the cost incurred on uncompleted contracts in projects that have been partially completed. Estimated earnings Estimated Earnings On Uncompleted Contracts Refers to the estimated earnings on projects that have been partially completed. Costs incurred on contracts in progress and estimated earnings, gross Costs And Estimated Earnings On Uncompleted Contracts Refers to the cost and estimated earnings on uncompleted projects that have been partially completed. Less progress billings Billed Contracts Receivable Costs incurred on contracts in progress and estimated earnings, net Costs And Estimated Earnings In Excess Of Billings And Billings In Excess Of Costs And Estimated Earnings Net Costs And Estimated Earnings In Excess Of Billings And Billings In Excess Of Costs And Estimated Earnings Net The above is included in the accompanying condensed consolidated balance sheet under the following captions Costs And Estimated Earnings On Contracts In Excess Of Billings Balance Sheet [Abstract] Billings in excess of costs and recognized earnings on uncompleted contracts Billings in Excess of Cost Basic Income (Loss) Per Common Share to Diluted Income (Loss) Per Common Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Long-term Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Aggregate Debt Maturities Schedule of Maturities of Long-term Debt [Table Text Block] Statement of Financial Position [Abstract] PROPERTY, PLANT AND EQUIPMENT – Net STOCKHOLDERS’ EQUITY: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Treasury stock, at cost – 31,626 shares at June 30, 2014 and December 31, 2013, respectively Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Property, Plant and Equipment [Abstract] Summary of Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Accounts Receivable and Contracts in Progress Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A-1 [Member] Common Class A [Member] Class A-2 [Member] Common Class A 2 [Member] Common class A 2. Class A-3 [Member] Common Class A Three [Member] Common Class A 3. Class A Warrants [Member] Class A Warrants [Member] Class A warrants. Class B Warrants [Member] Class B Warrants [Member] Class B warrants. Additional Warrant [Member] Additional Warrant [Member] Additional Warrant [Member] Minimum [Member] Minimum [Member] Statement [Line Items] Statement [Line Items] Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Number of warrants entitled for purchase Class of Warrant or Right, Number of Securities Called by Warrants or Rights Aggregate amount of common stock Number Of Shares Per Warrant Entitled For Purchase Number of shares per warrant entitled for purchase. Expiry date of warrants Class Of Warrant Or Rights Date From Which Warrants Or Rights Expired Class of warrant or rights date from which warrants or rights expired. Term of warrants Class Of Warrant Or Right Exercisable Term Class of warrant or right exercisable term. Decrease in exercise price per share Class of Warrant or Right, Exercise Price of Warrants or Rights Warrants exercised Number Of Warrants Exercised Number of warrants exercised. Warrants converted to common shares Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Warrants expiration date Warrants Expire Date Warrants Expire Date Preferred stock conversion price Convertible Preferred Stock Conversion Price Per Share This element represents the conversion price for convertible preferred stock per share. Preferred stock cumulative cash dividend rate Preferred Stock, Dividend Rate, Percentage Preferred stock dividend payment description Preferred Stock, Dividend Payment Rate, Variable Preferred stock dividend rate Preferred Stock Accreting Dividends Accruing Rate This element represents the preferred stock accreting dividends accruing rate. Preferred stock redemption description Preferred Stock, Redemption Terms Preferred stock redemption price per share on accrued and unpaid dividends, percentage Percentage Of Preferred Stock Redemption Price On Accrued And Unpaid Dividends This element represents the percentage of preferred stock redemption price per share on accrued and unpaid dividends. Convertible preferred stock volume weighted average price percentage Percentage Of Volume Weighted Average Price With Respect To Conversion Price This element represents the percentage of volume weighted average price with respect to conversion price. Volume weighted average price threshold percentage Volume Weighted Average Price Threshold Percentage This element represents the percentage threshold of volume weighted average price. Preferred stock force conversion, trading days to calculate volume weighted average price Preferred Stock Force Conversion Trading Period To Calculate Volume Weighted Average Price This element represents the Preferred Stock force conversion trading period used to calculate volume weighted average price. Preferred stock trading days to calculate volume weighted average price Preferred Stock Trading Period To Calculate Volume Weighted Average Price This element represents the Preferred Stock trading period used to calculate volume weighted average price. Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Groups, Including Discontinued Operations, Name [Domain] Disposal Group Name [Domain] BLACKIRON Data [Member] Blackiron Data [Member] BLACKIRON Data. North America Telecom [Member] North America Telecom [Member] Represents business unit which is discontinued from the entity. Recorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Recorded Unconditional Purchase Obligation by Category of Item Purchased [Axis] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain] Working Capital Adjustment [Member] Working Capital Adjustment [Member] Refers to the amount of capital adjusted in business which is used in its day-to-day trading operations, calculated as the current assets minus the current liabilities. Income Tax Related Liabilities [Member] Income Tax Related Liabilities [Member] The total tax that an entity is legally obligated to pay to an authority as the result of the occurrence of a taxable event. Tax liability can be calculated by applying the appropriate tax rate to the taxable event's tax base. Taxable events include, but are not limited to, annual income, the sale of an asset, a fiscal year-end or an inheritance. Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Prepaid Expenses and Other Current Assets [Member] Prepaid Expenses and Other Current Assets [Member] Other Assets [Member] Other Assets [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] York [Member] York [Member] Legal entity created to conduct business. Aircraft [Member] Aircraft [Member] Aircraft [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Outstanding equity value Sale Of Direct Wholly Owned Subsidiary Amount Sale of direct wholly owned subsidiary amount. Gain from sale of discontinued operations, net of tax Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Proceeds from sale placed in escrow Escrow Deposit Sale price of outstanding placed in escrow Sales Price Of Subsidiary Sales price of subsidiary. Indemnification obligation Business Combination, Indemnification Assets, Amount as of Acquisition Date Escrow received Escrowed Proceeds Received Refers to amount of proceeds received from the transaction that are used for a variety of other purposes such as earnest money and contingent payments. Additional amount held in escrow Expected Additional Proceeds From Escrow Deposit Refers to expected additional proceeds receivable from the transactions that are used for a variety of other purposes such as earnest money and contingent payments. Escrow proceeds received Escrow Proceeds Escrow Proceeds Period of escrow to be released after closing date Period Of Escrow Deposit Release Refers to period of escrow deposit release, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. Purchase consideration placed in escrow Purchase price placed in escrow Refers to the amount of purchase price received and deposited in escrow as per purchase agreement. Escrow deposit recorded Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current Escrow deposit recorded Disposal Group, Including Discontinued Operation, Prepaid and Other Assets Amount released from escrow Escrow Deposit Disbursements Related to Property Acquisition Adjustment to remaining carrying value of discontinued operation Discontinued Operation, Provision for Loss (Gain) on Disposal, Net of Tax Assets held for sale Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent Net revenue Business Acquisition, Pro Forma Revenue Net income (loss) from continuing operations Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax Net income (loss) from discontinued operations Business Acquisitions Pro Forma Income Loss From Discontinued Operations Before Changes In Accounting And Extraordinary Items Net Of Tax Amount of operating income or loss attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period as if the business combination or combinations had been completed at the beginning of a period. GAIN (LOSS) FROM SALE OF DISCONTINUED OPERATIONS, net of tax Net income (loss) attributable to HC2 Holdings, Inc. Business Acquisition, Pro Forma Net Income (Loss) Basic income (loss) per common share: Business Acquisition Pro Forma Earnings Per Share Basic [Abstract] Business Acquisition Pro Forma Earnings Per Share Basic [Abstract] Income (loss) from continuing operations attributable to HC2 Holdings, Inc. Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Basic Income (loss) from discontinued operations Business Acquisition Pro Forma Income Loss From Discontinued Operations Before Changes In Accounting And Extraordinary Items Net Of Tax Per Share Basic Business Acquisition Pro Forma Income Loss From Discontinued Operations Before Changes In Accounting And Extraordinary Items Net Of Tax Per Share Basic Net income (loss) attributable to HC2 Holdings, Inc. Business Acquisition, Pro Forma Earnings Per Share, Basic Diluted income (loss) per common share: Business Acquisition Pro Forma Earnings Per Share Diluted [Abstract] Business Acquisition Pro Forma Earnings Per Share Diluted [Abstract] Income (loss) from continuing operations attributable to HC2 Holdings, Inc. Business Acquisition, Pro Forma Income (Loss) from Continuing Operations before Changes in Accounting and Extraordinary Items, Net of Tax, Per Share, Diluted Income (loss) from discontinued operations Business Acquisition Pro Forma Income Loss From Discontinued Operations Before Changes In Accounting And Extraordinary Items Net Of Tax Per Share Diluted Business Acquisition Pro Forma Income Loss From Discontinued Operations Before Changes In Accounting And Extraordinary Items Net Of Tax Per Share Diluted Net income (loss) attributable to HC2 Holdings, Inc. Business Acquisition, Pro Forma Earnings Per Share, Diluted Intrinsic Value, Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Intrinsic Value, Options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Weighted Average Remaining Life in Years, Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted Average Remaining Life in Years, Options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Statement of Stockholders' Equity [Abstract] Common Stock [Member] Additional Paid-In Capital [Member] Treasury Stock [Member] Retained Earnings (Accumulated Deficit) [Member] Accumulated Other Comprehensive Income (Loss) [Member] Non-controlling Interest [Member] Beginning Balance Beginning Balance, Shares Shares, Issued Share-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Proceeds from the exercise of warrants and stock options Stock Issued During Period Value Stock Options And Warrants Exercised Value of stock issued as a result of the exercise of stock options and warrants. Proceeds from the exercise of warrants and stock options, Shares Stock Issued During Period Shares Stock Options And Warrants Exercised Number of share options (or share units) and warrants exercised during the current period. Taxes paid in lieu of shares issued for share-based compensation Adjustments Related to Tax Withholding for Share-based Compensation Preferred stock dividend and accretion Dividends, Preferred Stock, Stock Issuance of common stock, Shares Stock Issued During Period, Shares, New Issues Issuance of common stock, Net Stock Issued During Period, Value, New Issues Noncontrolling interest in acquired company Noncontrolling Interest, Increase from Business Combination Ending Balance (As Restated) Ending Balance, Shares (As Restated) TOTAL ASSETS Acquisition date Business Acquisition, Date of Acquisition Agreement Number of shares of common stock acquired Business Acquisition Number Of Shares Acquired The number of shares acquired by the entity during the period. Additional number of shares acquired Business Acquisition Additional Number Of Shares Acquired The number of additional shares acquired by the entity during the period. Percentage of ownership interest acquired Business Acquisition, Percentage of Voting Interests Acquired Business acquisition purchase price valued per share Business Acquisition, Share Price Non-controlling interest ownership percentage Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Transaction cost incurred in acquisition Business Acquisition, Transaction Costs Revenue NET INCOME (LOSS) ATTRIBUTABLE TO HC2 HOLDINGS, INC. Net Income (Loss) Attributable to Parent Business And Organization [Table] Business And Organization [Table] Business And Organization [Table] Schuff Hopsa Engineering, Inc. [Member] Schuff Hopsa Engineering Inc [Member] Schuff Hopsa Engineering Inc [Member] Schuff. Empresas Hopsa, S.A. [Member] Schuff Empresas Hopsa Sa [Member] Schuff Empresas Hopsa Sa [Member] Series A Convertible Participating Preferred Stock [Member] Series A- Convertible Preferred Stock [Member] Outstanding Series A preferred stock that may be exchanged into common shares or other types of securities at the owner's option. Business And Organization [Line Items] Business And Organization [Line Items] Business And Organization [Line Items] Aggregate consideration for shares acquired Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Proceeds from sale of preferred stock, net Proceeds from sale of common stock, net Proceeds from issuance of senior secured credit facility Proceeds from Issuance of Senior Long-term Debt Date of acquisition Business Acquisition, Effective Date of Acquisition Increase in Company's ownership interest Equity Method Investment, Ownership Percentage Minority interest percentage by non controlling interest Open Tax Years for Each Major Jurisdiction Open Tax Years By Major Jurisdiction Table [Text Block] Open tax years by major jurisdiction. Backlog Purchase and Supply Commitment, Excluding Long-term Commitment [Text Block] Accounts payable Accounts Payable, Trade, Current Retentions payable Retention Payable Accounts payable Equity Stockholders' Equity Note Disclosure [Text Block] Summary of Accounts Payable Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Omnibus Plan [Member] Omnibus Plan [Member] Refers to Omnibus Equity Award Plan, which was approved by our stockholders at the annual meeting of stockholders. Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock Option [Member] Employee Stock Option [Member] RSU [Member] Restricted Stock Units (RSUs) [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Philip Falcone [Member] Philip Falcone [Member] Philip Falcone [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Common stock outstanding awards Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Common stock shares authorized to issue Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Weighted average fair value at date of grant for options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based compensation expense recognized Compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Weighted average remaining period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Unvested shares expected to vest Unvested Shares Expected To Vest As of the balance sheet date, the number of shares into which not fully vested and expected to vest stock options outstanding can be converted under the option plan. Intrinsic value of exercised options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Unvested stock options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares Compensation expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Unvested shares expected to vest Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Weighted average remaining life Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Weighted average exercise price Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Operating Segment and Related Information Segment Reporting Disclosure [Text Block] Net revenue Disposal Group, Including Discontinued Operation, Revenue Operating expenses Disposal Group, Including Discontinued Operation, Operating Expense Income from operations Disposal Group, Including Discontinued Operation, Operating Income (Loss) Interest expense Disposal Group, Including Discontinued Operation, Interest Expense Interest income and other income (expense) Disposal Group Including Discontinued Operation Interest And Other Income Expense Amount of interest income and other (income) expense attributable to disposal group. Foreign currency transaction loss Disposal Group Including Discontinued Operation Foreign Currency Transaction Gain Loss Disposal group including discontinued operation foreign currency transaction gain. Income (loss) before income tax Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Income tax (expense) Discontinued Operation, Tax Effect of Discontinued Operation Income from discontinued operations Accounts receivable Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Prepaid expenses and other current assets Long-lived assets and other non-current assets Disposal Group, Including Discontinued Operation, Other Assets Assets held for sale Accounts payable Disposal Group, Including Discontinued Operation, Accounts Payable Accrued interconnection costs Disposal Group Including Discontinued Operation Accrued Interconnection Costs Disposal group including discontinued operation accrued interconnection costs. Accrued expenses and other liabilities Disposal Group, Including Discontinued Operation, Accrued Liabilities Liabilities held for sale Operating Leases Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2014 (as of June 30, 2014) Operating Leases, Future Minimum Payments Due, Next Twelve Months 2015 Operating Leases, Future Minimum Payments, Due in Two Years 2016 Operating Leases, Future Minimum Payments, Due in Three Years 2017 Operating Leases, Future Minimum Payments, Due in Four Years 2018 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total long-term obligations Operating Leases, Future Minimum Payments Due Summarized Operating Results of Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Basic and Diluted Income (Loss) Per Common Share Earnings Per Share [Text Block] Expected option life Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Rent expense Operating Leases, Rent Expense Number of lawsuits Number Of Lawsuits Number Of Lawsuits Regulatory Assets [Abstract] Regulatory assets. Significant Accounting Policies [Table] Significant Accounting Policies [Table] Significant Accounting Policies [Table] Buildings and Improvements [Member] Building and Building Improvements [Member] Genovel [Member] Genovel [Member] Genovel [Member] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Significant Accounting Policies [Line Items] Minority interest rate Noncontrolling Interest, Ownership Percentage by Parent Ownership interest rate Ownership interest description Equity Method Investment, Description of Principal Activities Estimated useful lives of property, plant and equipment Property, Plant and Equipment, Useful Life Unapproved change orders on open projects Unapproved Change Orders, Amount Shares Outstanding, Beginning Balance Shares, Granted Shares, Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Shares, Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Shares Outstanding, Ending Balance Shares, Eligible for exercise Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted Average Exercise Price, Outstanding, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted Average Exercise Price, Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted Average Exercise Price, Exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted Average Exercise Price, Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Weighted Average Exercise Price, Outstanding, Ending Balance Weighted Average Exercise Price, Eligible for exercise Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Summary of Company's restricted stock units, Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Shares, Beginning Balance, Unvested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Shares, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Shares, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Shares, Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Shares, Ending Balance, Unvested Summary of Company's restricted stock units, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted Average Grant Date Fair Value, Unvested, Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Unvested, Ending balance Schedule of Purchase Price Allocation Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Acquired Amortizable Intangible Assets and Related Estimated Useful Lives Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of Unaudited Consolidated Pro Forma Results of Operations Business Acquisition, Pro Forma Information [Table Text Block] Fair Value of Each Option Grant Estimated Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Summary of Company's Restricted Stock Units Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Summary of Company's Stock Option Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Intrinsic Values and Remaining Contractual Terms of Company's Stock Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] Income Tax Contingency [Table] Income Tax Contingency [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Netherlands [Member] NETHERLANDS Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Open tax years beginning Open Tax Years Beginning Open tax years beginning. Open tax years ending Open Tax Years Ending Open tax years ending. Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Contract receivables: Contracts Receivable [Abstract] Contracts in progress Contract In Progress Receivable Contract In Progress Receivable Unbilled retentions Unbilled Contracts Receivable Trade receivables Accounts Receivable, Gross Other receivables Other Receivables Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable Total accounts receivable Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] OPERATING EXPENSES Operating Expenses [Abstract] Cost of revenue Cost of Revenue Selling, general and administrative Selling, General and Administrative Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction (Gain) loss on sale or disposal of assets Gain (Loss) on Disposition of Property Plant Equipment Total operating expenses Operating Expenses LOSS FROM OPERATIONS INTEREST EXPENSE Interest Expense ACCRETION ON DEBT DISCOUNT Amortization of Debt Discount (Premium) GAIN FROM CONTINGENT VALUE RIGHTS VALUATION INTEREST INCOME AND OTHER EXPENSE, net Interest And Other Income Expense Interest and other income expense. FOREIGN CURRENCY TRANSACTION GAIN (LOSS) Foreign Currency Transaction Gain (Loss), before Tax INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest INCOME TAX EXPENSE INCOME (LOSS) FROM CONTINUING OPERATIONS Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest INCOME (LOSS) FROM DISCONTINUED OPERATIONS, net of tax NET INCOME (LOSS) Less: Net (income) loss attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest NET INCOME (LOSS) ATTRIBUTABLE TO HC2 HOLDINGS, INC. Less: Preferred stock dividends and accretion Preferred Stock Dividends and Other Adjustments NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK AND PARTICIPATING PREFERRED STOCKHOLDERS BASIC INCOME (LOSS) PER COMMON SHARE: Earnings Per Share, Basic [Abstract] NET INCOME (LOSS) ATTRIBUTABLE TO HC2 HOLDINGS, INC. (in USD per share) DILUTED INCOME (LOSS) PER COMMON SHARE: Earnings Per Share, Diluted [Abstract] NET INCOME (LOSS) ATTRIBUTABLE TO HC2 HOLDINGS, INC. (in USD per share) WEIGHTED AVERAGE COMMON SHARES OUTSTANDING Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in USD per share) Diluted (in USD per share) AMOUNTS ATTRIBUTABLE TO COMMON SHAREHOLDERS OF HC2 HOLDINGS, INC. Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Long-Term Obligations Long-term Debt [Text Block] Estimated aggregate fair value of the Company's debt, based on quoted market prices Long-term Debt, Fair Value Aggregate carrying value of the Company's debt Secured Debt, Other Property, Plant and Equipment Property, Plant and Equipment Disclosure [Text Block] Equity Method Investments And Cost Method Investments [Abstract] Equity Method Investments And Cost Method Investments [Abstract] 2014 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 2015 Long-term Debt, Maturities, Repayments of Principal in Year Two 2016 Long-term Debt, Maturities, Repayments of Principal in Year Three 2017 Long-term Debt, Maturities, Repayments of Principal in Year Four 2018 Long-term Debt, Maturities, Repayments of Principal in Year Five 2019 Long-term Debt, Maturities, Repayments of Principal after Year Five Long-term debt Long-term Debt Risks and Uncertainties [Abstract] Purchase Commitment, Excluding Long-term Commitment [Table] Purchase Commitment, Excluding Long-term Commitment [Table] Purchase Commitment, Excluding Long-term Commitment [Axis] Purchase Commitment, Excluding Long-term Commitment [Axis] Purchase Commitment, Excluding Long-term Commitment [Domain] Purchase Commitment, Excluding Long-term Commitment [Domain] Contracts or Purchase Orders [Member] Purchase Commitment [Member] Letters of Intent [Member] Letters Of Intent [Member] Letters of intent are used during the merger and acquisitions process to outlines a firm's plan to buy/take over another company. Five Contracts, Letters of Intent, Notices to Proceed or Purchase Orders [Member] Other Purchase Commitment [Member] Refers to the other purchase commitments to acquire goods or services from a supplier. Purchase Commitment, Excluding Long-term Commitment [Line Items] Purchase Commitment, Excluding Long-term Commitment [Line Items] Backlog amount Purchase Commitment, Remaining Minimum Amount Committed Backlog percentage Purchase Commitment Remaining Minimum Amount Committed Percentage Represents the percentage of remaining minimum amount committed of purchase commitments by the company. Number of contracts attributable to backlog Number Of Contracts Represents the number of contracts attributable to backlog. Income Statement [Abstract] (Gain) loss on sale or disposal of assets INTEREST EXPENSE INCOME TAX EXPENSE Less: Net (income) loss attributable to noncontrolling interest Less: Preferred stock dividends and accretion NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK AND PARTICIPATING PREFERRED STOCKHOLDERS Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Costs and Recognized Earnings in Excess of Billings and Billings in Excess of Costs and Recognized Earnings on Uncompleted Contracts Costs in Excess of Billings and Billings in Excess of Costs [Table Text Block] Summary of Company's Operating Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Segment Reporting for Property and Equipment - Net and Assets Long-lived Assets by Geographic Areas [Table Text Block] Note Payable Collaterized by Schuff's Real Estate [Member] Note Payable Collaterized By Real Estate [Member] Note Payable Collaterized By Real Estate [Member] Note Payable Collaterized by Schuff's Asset under Revolving Line of Credit Agreement [Member] Note Payable Collaterized By Asset Under Revolving Line Of Credit Agreement [Member] Note Payable Collaterized By Asset Under Revolving Line Of Credit Agreement [Member] Less current portion Long-term debt non current Postemployment Benefits [Abstract] Employee Retirement Plans Compensation and Employee Benefit Plans [Text Block] Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Amendment Description Amendment Description Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Depreciation expense Depreciation Subsequent Event [Table] Subsequent Event [Table] Subsequent Event [Line Items] Subsequent Event [Line Items] Debt instrument, interest rate terms Debt Instrument, Interest Rate Terms Debt instrument, alternative base rate Debt Instrument Alternate Base Rate Debt Instrument Alternate Base Rate Debt instrument, LIBOR rate Debt Instrument Libor Rate Debt Instrument Libor Rate Debt instrument, variable rate Debt instrument, maturity year Debt Instruments Maturity Year Debt Instruments Maturity Year Net income (loss) (Gain) loss on sale or disposal of assets (Gain) loss on sale of investments Accretion of debt discount Unrealized foreign currency transaction (gain) loss on intercompany and foreign debt (Increase) decrease in accounts receivable (Increase) decrease in costs and recognized earnings in excess of billings on uncompleted contracts (Increase) decrease in inventories (Increase) decrease in prepaid expenses and other current assets (Increase) decrease in other assets Purchase of property, plant and equipment Sale of investments, net Cash paid for business acquisitions, net of cash acquired Purchase of noncontrolling interest Decrease in restricted cash Principal payments on long-term obligations Payment of fees on restructuring of debt Payment of dividend equivalents Taxes paid in lieu of shares issued for share-based compensation SUPPLEMENTAL CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract]