Non-trade receivable Nontrade Receivables, Current Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Accrued expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities Range [Domain] Statistical Measurement [Domain] Restructuring, expected cost remaining Restructuring and Related Cost, Expected Cost Remaining After 2031 Lessee, Operating Lease, Liability, to be Paid, after Year Five Lease extension Lessor, Operating Lease, Renewal Term Licenses exchanged Exchanges - licenses surrendered Indefinitelived Intangible Assets, Exchanged Licenses Surrendered Indefinitelived Intangible Assets, Exchanged Licenses Surrendered Award Timing Predetermined Award Timing Predetermined [Flag] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Indefinite-Lived Intangible Assets [Axis] Indefinite-Lived Intangible Assets [Axis] Asset Class [Axis] Asset Class [Axis] Escrow deposits Escrow Deposit, Noncurrent Escrow Deposit, Noncurrent Auditor Information [Abstract] Auditor Information Entity File Number Entity File Number Additional paid-in capital Additional Paid-in Capital [Member] Long-Lived Assets and Right of Use Assets Impairment Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Tabular List, Table Tabular List [Table Text Block] Initial payment received Collaborative Arrangement, Rights and Obligations, Initial Payment Received Collaborative Arrangement, Rights and Obligations, Initial Payment Received Accelerated amortization Capitalized Contract Cost, Accelerated Amortization Capitalized Contract Cost, Accelerated Amortization Leases [Abstract] Leases [Abstract] Time Based Stock Options Time Based Stock Options [Member] Time Based Stock Options Wireless Licenses Wireless Licenses [Member] Wireless Licenses Recently Issued Accounting Pronouncements and Recently Adopted Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Broadband licenses granted, number of counties Broadband Licenses Granted, Number of Counties Broadband Licenses Granted, Number of Counties License License [Member] Shares withheld for taxes Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Net income (loss) per common share basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Related Party Transactions Related Party Transactions Disclosure [Text Block] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable and other accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Common stock authorized and reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Asset retirement obligation, liabilities settled Liabilities settled Asset Retirement Obligation, Liabilities Settled Revenue Revenue from Contract with Customer [Text Block] Schedule of Spectrum Sale Agreements Collaborative Arrangement and Arrangement Other than Collaborative [Table Text Block] Stock compensation expense Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost Award Date [Axis] Award Date [Axis] Total deferred tax asset Deferred Tax Assets, Gross CPS Energy (“CPS”) CPS Energy [Member] CPS Energy Schedule of Operating Financial Results Schedule of Segment Reporting Information, by Segment [Table Text Block] Restricted shares issued (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Total current Current Income Tax Expense (Benefit) Remaining performance obligation, amount Revenue, Remaining Performance Obligation, Amount Prior year adjustments Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount Decrease in asset retirement obligations accrual Revision of estimate Asset Retirement Obligation, Revision of Estimate Adjustment to Compensation, Amount Adjustment to Compensation Amount Consolidation Consolidation, Policy [Policy Text Block] Proceeds from sale of spectrum Proceeds from Sale of Intangible Assets Stock Options Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Product Development Costs Research and Development Expense, Policy [Policy Text Block] Cash accruals Restructuring Charges, Net of Reclassifications Restructuring Charges, Net of Reclassifications Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Policy [Policy Text Block] Taxes paid, including excise tax Income Taxes Paid Percent Effective Income Tax Rate Reconciliation, Percent [Abstract] Stock compensation expense Shares Issued, Value, Share-Based Payment Arrangement, before Forfeiture Total stockholders’ equity Beginning balance Ending balance Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Stock compensation expense Stock compensation expense (reversal) Share-Based Payment Arrangement, Expense Schedule of Components of Property and Equipment Property, Plant and Equipment [Table Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Intangibles - FCC licenses Effective Income Tax Rate Reconciliation, Intangible Assets, Percent Effective Income Tax Rate Reconciliation, Intangible Assets, Percent Current assets Assets, Current [Abstract] Total liabilities and stockholders’ equity Liabilities and Equity Options Performance Options Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentrations of Credit Risk and Significant Customers Concentration Risk, Credit Risk, Policy [Policy Text Block] Rights of use asset for modifications and renewals Rights Of Use Asset For Modifications And Renewals Rights Of Use Asset For Modifications And Renewals Wireless Licenses Licensing Agreements [Member] Sale of intangible assets Indefinite-Lived Intangible Assets, Written off Related to Sale of Business Unit LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] State State and Local Jurisdiction [Member] Cover [Abstract] Cover [Abstract] Maximum Maximum [Member] Exercisable at period end (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Wireless licenses term Finite-Lived Intangible Asset, Useful Life Change in Valuation Allowance [Roll Forward] Change in Valuation Allowance [Roll Forward] Change in Valuation Allowance Accounting Policies [Abstract] Accounting Policies [Abstract] Service-Based Stock Options Service Stock Options [Member] Service Stock Options [Member] Schedule of Future Minimum Payments Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Restricted Stock Restricted Stock [Member] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Restricted Stock Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Fair value of restricted stock units vested (in thousands) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Broadband license, held-for-sale Broadband Licenses, Held-for-Sale Broadband Licenses, Held-for-Sale Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Present value of net future minimum lease payments Operating Lease, Liability Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Total Consideration Lessor, Operating Lease, Payment to be Received Schedule of Valuation Allowance Summary of Valuation Allowance [Table Text Block] Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Other liabilities Other Liabilities, Noncurrent Revenue Recognition Revenue, Remaining Performance Obligation, Provision for Loss [Policy Text Block] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Accrued severance and other related charges Accrued Severance And Other Related Charges, Current Accrued Severance And Other Related Charges, Current Summary of Supplemental Cash Flow Information Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Accounting for Asset Retirement Obligations Asset Retirement Obligation [Policy Text Block] Other liabilities Increase (Decrease) in Other Noncurrent Liabilities Name Measure Name Operating lease liabilities Current liabilities - operating lease liabilities Operating Lease, Liability, Current Broadband licenses transferred, total consideration Broadband Licenses Transferred, Total Consideration Broadband Licenses Transferred, Total Consideration Deferred income tax Deferred Income Tax Liabilities, Net Computer software Software and Software Development Costs [Member] Document Fiscal Period Focus Document Fiscal Period Focus Schedule of Lessor, Operating Lease Agreements Schedule Of Lessor, Operating Lease Agreements [Table Text Block] Schedule Of Lessor, Operating Lease Agreements Gain on exchange of intangible assets, net (Gain) Loss On Exchange Of Intangible Assets (Gain) Loss On Exchange Of Intangible Assets Award Timing Method Award Timing Method [Text Block] Furniture and fixture and other equipment Furniture and Fixtures [Member] Broadband license(s) remaining Broadband Licenses Granted, Number Of License Remaining Broadband Licenses Granted, Number Of License Remaining Award Type [Axis] Award Type [Axis] Deferred revenue Noncurrent liabilities Contract with Customer, Liability, Noncurrent Total assets Assets Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] CASH FLOWS FROM INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract] Stock Compensation Share-Based Payment Arrangement [Policy Text Block] Trading Symbol Trading Symbol Virginia VIRGINIA 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four 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 Change in valuation allowance - Federal Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Income Taxes Income Tax, Policy [Policy Text Block] NorthWestern Energy (“NWE”) NorthWestern Energy [Member] NorthWestern Energy Intangible Assets Goodwill and Intangible Assets, Intangible Assets, Indefinite-Lived, Policy [Policy Text Block] Entity Address, City or Town Entity Address, City or Town Other segment items Segment Reporting, Other Segment Item, Amount Intangible Assets Intangible Assets Disclosure [Text Block] Deferred tax asset Deferred Tax Assets, Net of Valuation Allowance Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Severance costs Severance Costs Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Reimbursable clearing costs and anti windfall payments Broadband License Sale, Reimbursable Clearing Costs And Anti Windfall Payments Broadband License Sale, Reimbursable Clearing Costs And Anti Windfall Payments Derecognition of contingent liability related to sale of intangible assets Derecognition Of Contingent Liability Related To Sale Of Intangible Assets Derecognition Of Contingent Liability Related To Sale Of Intangible Assets Entity Emerging Growth Company Entity Emerging Growth Company Accrued severance and other related charges Beginning balance Ending balance Restructuring Reserve, Current Impairment of long-lived assets Impairment, Long-Lived Asset, Held-for-Use Purchases of intangible assets and other related costs Payments to acquire intangible assets Payments to Acquire Intangible Assets Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Beginning balance Ending balance Capitalized Contract Cost, Net Rights of use asset for new leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Beginning options outstanding (in shares) Ending options outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Document Financial Statement Error Correction Document Financial Statement Error Correction [Flag] State income taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Restructuring Reserve [Roll Forward] Restructuring Reserve [Roll Forward] Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Intangible assets Beginning balance Ending balance Indefinite-Lived Intangible Assets (Excluding Goodwill) Adjusted general and administrative General And Administrative Expense, Adjusted General And Administrative Expense, Adjusted Related Party Related Party [Member] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Acquired Indefinite-lived Intangible Assets [Line Items] Intangible Asset, Acquired, Indefinite-Lived [Line Items] Severance and other related charges Severance And Other Related Charges Severance And Other Related Charges 2023 Stock Plan 2023 Stock Plan [Member] 2023 Stock Plan Schedule of Components of Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Plan Name [Axis] Plan Name [Axis] Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Gain on sale of intangible assets, net Gain on sale of intangible assets Gain On Sale Of Intangible Assets Gain On Sale Of Intangible Assets PEO PEO [Member] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Total deferred tax assets and liabilities Deferred Tax Assets Liabilities Before Valuation Allowance Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences Indefinite-lived intangible assets Deferred Tax Liabilities, Intangible Assets Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Income Tax Paid, by Individual Jurisdiction [Line Items] Income Tax Paid, by Individual Jurisdiction [Line Items] Charitable contributions carryforward Deferred Tax Assets, Charitable Contribution Carryforwards Arrangement with individual, compensation expense Consulting fees Deferred Compensation Arrangement with Individual, Compensation Expense Stock option exercises Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Change in valuation allowance - Federal Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Volatility Volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] Accumulated deficit Retained Earnings [Member] Non-trade receivable Increase (Decrease) In Nontrade Receivables Increase (Decrease) In Nontrade Receivables Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash compensation Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount Per Month Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount Per Month Share-Based Payment Arrangement [Abstract] Cash and cash equivalents and restricted cash at beginning of the year Cash and cash equivalents and restricted cash at end of the year Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation, Total Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Income Statement [Abstract] Income Statement [Abstract] Income tax expense Income tax expense Income tax expense Income Tax Expense (Benefit) 162M executive compensation limit Effective Income Tax Rate Reconciliation, Nondeductible Expense, Executive Compensation Limit, Percent Effective Income Tax Rate Reconciliation, Nondeductible Expense, Executive Compensation Limit, Percent Accrued taxes Taxes Payable, Current Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Product and Service [Domain] Product and Service [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Property and equipment, gross Property, Plant and Equipment, Gross Summary of Performance Stock Options Share-Based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block] Xcel Energy Xcel Energy Services Inc. [Member] Xcel Energy Services Inc. Schedule of Contract Assets Contract with Customer, Contract Asset [Table Text Block] Contract with Customer, Contract Asset [Table Text Block] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Employer contribution amount Defined Contribution Plan, Employer Discretionary Contribution Amount Summary of Assumptions used to Calculate Fair Value of Performance-Based Restricted Units Schedule of Share-based Payment Award, Performance-Based Restricted Units, Valuation Assumptions [Table Text Block] Schedule of Share-based Payment Award, Performance-Based Restricted Units, Valuation Assumptions [Table Text Block] Senior Executive Officer Senior Executive Officer [Member] Senior Executive Officer Income Tax Disclosure [Table] Income Tax Paid, by Individual Jurisdiction [Table] Payments remaining Revenue, Remaining Performance Obligation, Payments Remaining Revenue, Remaining Performance Obligation, Payments Remaining Accrued Severance and Other Related Charges Restructuring and Related Activities Disclosure [Text Block] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Proceeds from stock option exercises Proceeds from Stock Options Exercised Motorola Motorola [Member] Motorola [Member] City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Federal income taxes paid Income Tax Paid, Federal, after Refund Received All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Weighted average contractual term, total vested and expected to vest Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Accrued expenses Accrued Liabilities, Current Other adjustments Effective Income Tax Rate Reconciliation, Other Adjustments, Amount LCRA Agreement Lower Colorado River Authority (LCRA) [Member] Lower Colorado River Authority (LCRA) Awards issued (in shares) Beginning stock outstanding (in shares) Ending stock outstanding (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Net deferred tax assets and liabilities Deferred Tax Liabilities, Net General and administrative General and Administrative Expense Gain on exchange of intangible assets, net Gain On Exchange Of Intangible Assets Gain On Exchange Of Intangible Assets Unrecognized compensation cost related to non-vested share options granted Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Related Party Transactions [Abstract] Related Party Transactions [Abstract] Estimated useful life Property, Plant and Equipment, Useful Life Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Summary of Assumptions used to Calculate Fair Value of Options Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Unvested Time-Based Unvested Time-Based [Member] Unvested Time-Based Total operating lease cost Lease, Cost Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Schedule of Lease Cost Lease, Cost [Table Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Depreciation Depreciation Total vested and expected to vest (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Deferred federal income tax expense Federal Deferred Federal Income Tax Expense (Benefit) Texas-New Mexico Power Company (“TNMP”) Texas-New Mexico Power Company [Member] Texas-New Mexico Power Company Equity Components [Axis] Equity Components [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Auditor Name Auditor Name Nature of Operations Nature of Operations [Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Lower Colorado River Authority Lower Colorado River Authority [Member] Lower Colorado River Authority [Member] Contract with Customer, Liability [Roll Forward] Contract with Customer, Liability [Roll Forward] Contract with Customer, Liability Number of reportable segments Number of Reportable Segments Washington D.C. WASHINGTON Long Term Collaborative Arrangement, Rights And Obligations, Contingent Consideration, Noncurrent Collaborative Arrangement, Rights And Obligations, Contingent Consideration, Noncurrent Advertising and Promotional Expense Advertising Cost [Policy Text Block] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Other Performance Measure, Amount Other Performance Measure, Amount Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Entity Address, State or Province Entity Address, State or Province Related Party [Domain] Related and Nonrelated Parties [Domain] Total current liabilities Liabilities, Current Amount Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Individual: Individual [Axis] Vesting [Axis] Vesting [Axis] Fair Value Measurement of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Agreement term Collaborative Arrangement, Rights and Obligations, Agreement Term Collaborative Arrangement, Rights and Obligations, Agreement Term Document Annual Report Document Annual Report Net cash provided by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Components of Deferred Tax Assets and Liabilities [Line Items] Components of Deferred Tax Assets and Liabilities [Line Items] Components of Deferred Tax Assets and Liabilities [Line Items] Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Stock Compensation Shareholders' Equity and Share-Based Payments [Text Block] Right of use assets, net Non-current assets - right of use assets, net Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] President and Chief Executive Officer President And Chief Executive Officer [Member] President and Chief Executive Officer [Member] Total income tax expense, percent Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current CASH FLOWS FROM OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract] Plan Name [Domain] Plan Name [Domain] Performance-Based Restricted Stock Units Performance Stock Units [Member] Performance Stock Units [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Weighted average period of recognition of unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition TSR Total Stockholders Return [Member] Total Stockholders Return [Member] Stock option exercises (in shares) Options exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Deferred revenue Deferred Tax Assets, Deferred Income Balance at beginning of the year Balance at end of the year Valuation allowance Deferred Tax Assets, Valuation Allowance Contract Assets and Liabilities Revenue from Contract with Customer [Policy Text Block] Aggregate intrinsic value, exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Share-based compensation arrangement by share-based payment award, stock price period for award vesting Share-Based Compensation Arrangement by Share-Based Payment Award, Stock Price Period For Award Vesting Share-Based Compensation Arrangement by Share-Based Payment Award, Stock Price Period For Award Vesting Incentive stock option expense Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount Consulting services minimum period Deferred Compensation Arrangement with Individual, Requisite Service Period Escrow deposit, cumulative Escrow Deposit, Cumulative Escrow Deposit, Cumulative Significant segment expenses and other segment items Segment Reconciliation [Abstract] Segment Reporting Segment Reporting Disclosure [Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Net operating loss carryforwards, no expiration Deferred Tax Assets, Operating Loss Carryforwards Federal Current Federal Tax Expense (Benefit) Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Other Commitments [Line Items] Other Commitments [Line Items] Adjusted sales and support Selling And Marketing Expense, Adjusted Selling And Marketing Expense, Adjusted Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Non-cash investing activity: Non-Cash Investing Activity [Abstract] Non-Cash Investing Activity Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Contingent liability Business Combination, Contingent Consideration, Liability Metric [Domain] Metric [Domain] Metric [Domain] Leases Lessee, Leases [Policy Text Block] Spectrum Receivable and Deferred Broadband Costs Prepayments And Deferred Costs [Policy Text Block] Prepayments And Deferred Costs Depreciation and amortization Depreciation, Depletion and Amortization Other assets Other Assets, Noncurrent Customer [Domain] Customer [Domain] Entity Central Index Key Entity Central Index Key PEO Name PEO Name Balance at beginning of the year Balance at end of the year Asset Retirement Obligation Total spectrum revenue Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Supplemental Cash Flow Elements [Abstract] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Advertising Advertising [Member] Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] First Anniversary Share-Based Payment Arrangement, Tranche One [Member] Computer equipment Computer Equipment [Member] Deferred revenue Less amount classified as current liabilities Contract with Customer, Liability, Current Network sites and equipment Network Sites And Equipment [Member] Network Sites and Equipment [Member] Segments [Axis] Segments [Axis] Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Unvested compensation expense Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Statutory federal tax Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Subsequent Event Type [Axis] Subsequent Event Type [Axis] Retirement of common stock (in shares) Number of shares repurchased and retired (in shares) Stock Repurchased and Retired During Period, Shares Contingent liability Business Combination, Contingent Consideration, Liability, Current Number of states in service territory Collaborative Arrangement, Rights and Obligations, Number Of States In Service Territory Collaborative Arrangement, Rights and Obligations, Number Of States In Service Territory Total spectrum revenue Spectrum [Member] Spectrum [Member] ASSETS Assets [Abstract] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Each Customer Each Customer [Member] Each Customer Vesting [Domain] Vesting [Domain] Grants Prior to July 2023 Grants Prior To July 2023 [Member] Grants Prior To July 2023 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 Deferred tax asset Deferred Tax Assets, Net [Abstract] Lessor, Operating Lease, Renewal Term, Number Lessor, Operating Lease, Renewal Term, Number Lessor, Operating Lease, Renewal Term, Number Stockholders’ equity Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Schedule of Acquired Indefinite-lived Intangible Assets by Major Class [Table] Schedule of Acquired Indefinite-Lived Intangible Assets by Major Class [Table] Percentage of vesting for stock granted to employees Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Entity Address, Address Line One Entity Address, Address Line One Performance-based stock options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Awarded in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Awarded in Period Entity Address, Address Line Two Entity Address, Address Line Two Common stock trading day period Share-Based Compensation Arrangement by Share-Based Payment Award, Common Stock Trading Day Period Share-Based Compensation Arrangement by Share-Based Payment Award, Common Stock Trading Day Period Summary of Share Repurchase Activity Accelerated Share Repurchases [Table Text Block] Product development Research and Development Expense Shares withheld for taxes (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Operating lease liabilities Non-current liabilities - operating lease liabilities Operating Lease, Liability, Noncurrent Entity Voluntary Filers Entity Voluntary Filers Fair Value as of Grant Date Award Grant Date Fair Value Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Entity Registrant Name Entity Registrant Name Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Net operating loss carryforwards Operating Loss Carryforwards Accrued severance and other related charges Increase (Decrease) in Accrued Severance and Other Related Charges Increase (Decrease) in Accrued Severance and Other Related Charges Awards issued Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Schedule of Additional Lease Cost Information Additional Lease, Cost [Table Text Block] Additional Lease, Cost [Table Text Block] Title and Position [Domain] Title and Position [Domain] Operating expenses Costs and Expenses Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Related Party Transaction [Line Items] Related Party Transaction [Line Items] Other jurisdictions State and Local Tax Jurisdiction, Other [Member] Schedule of Supplemental Lease Information Supplemental Lease Information [Table Text Block] Supplemental Lease Information [Table Text Block] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Right of use assets Increase (Decrease) In Operating Right Of Use Asset Increase (Decrease) In Operating Right Of Use Asset 2028 Lessee, Operating Lease, Liability, to be Paid, Year Two Number of operating segments Number of Operating Segments Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Weighted average contractual term, options outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Schedule of Accounts Payable and Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Granted (in dollars per share) Weighted-average grant-date fair value per unit granted (in dollars per share) 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Description [Text Block] Current Collaborative Arrangement, Rights And Obligations, Contingent Consideration, Current Collaborative Arrangement, Rights And Obligations, Contingent Consideration, Current Operating lease liabilities Deferred Tax Assets, Operating Lease Liabilities Deferred Tax Assets, Operating Lease Liabilities Definite-Lived Intangible Assets Finite-Lived Intangible Assets [Member] Entity Small Business Entity Small Business Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] TECO Tampa Electric Company Tampa Electric Company [Member] Tampa Electric Company Total Consideration Broadband Licenses Granted, Estimated Consideration Broadband Licenses Granted, Estimated Consideration Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding State Current State and Local Tax Expense (Benefit) Document Transition Report Document Transition Report Previously received, amount Broadband License Sale, Assets Allocated From Previously Received, Amount Broadband License Sale, Assets Allocated From Previously Received, Amount Underlying Securities Award Underlying Securities Amount Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Income Tax Disclosure [Table] Income Tax Disclosure [Table] Income Tax Disclosure [Table] Options forfeited/expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Income Taxes Income Tax Disclosure [Text Block] Asset retirement obligations Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Asset Retirement Obligations Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Weighted average contractual term, exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Operating lease liabilities Increase (Decrease) in Operating Lease Liability Average price paid per share (in dollars per share) Shares Acquired, Average Cost Per Share 162M executive compensation limit Effective Income Tax Rate Reconciliation, Nondeductible Expense, Executive Compensation Limit, Amount Effective Income Tax Rate Reconciliation, Nondeductible Expense, Executive Compensation Limit, Amount Concentration risk, percentage Concentration Risk, Threshold Percentage Concentration Risk, Threshold Percentage Document Type Document Type Name Outstanding Recovery, Individual Name Additional paid-in capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Initial Term Lessor, Operating Lease, Term of Contract Award requisite service period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period Collaborative Arrangement, Transaction with Party to Collaborative Arrangement Collaborative Arrangement, Transaction with Party to Collaborative Arrangement [Member] All Individuals All Individuals [Member] Purchases of equipment Payments to Acquire Property, Plant, and Equipment Total vested or expected to vest at period end (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Lease [Line Items] Lease [Line Items] Lease [Line Items] Consideration transferred Asset Acquisition, Consideration Transferred Name Forgone Recovery, Individual Name Award expiration period Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of 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Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Deferred gain on sale of intangible assets Deferred Gain On Sale Of Intangible Assets, Cumulative Deferred Gain On Sale Of Intangible Assets, Cumulative Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Network equipment provided in exchange for wireless licenses Contribution Of Property, In Exchange For Intangible Assets Contribution Of Property, In Exchange For Intangible Assets Additions Capitalized Contract Cost, Additions Capitalized Contract Cost, Additions Current liabilities Liabilities, Current [Abstract] Additional Disclosures [Abstract] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Acquisitions Indefinite-Lived Intangible Assets Acquired Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Deferred broadband costs Deferred Costs, Noncurrent Colorado COLORADO Indefinite-lived Intangible Assets [Roll Forward] Indefinite-Lived Intangible Assets [Roll Forward] Related Party Transaction [Table] Related Party Transaction [Table] Net income (loss) per common share diluted (in dollars per share) Earnings Per Share, Diluted Net operating loss carryforward Deferred Tax Assets, Capital Loss Carryforwards Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Cash paid during the period: Income Taxes Paid, Net [Abstract] Amortization Capitalized Contract Cost, Amortization Licenses received Exchanges - licenses received Indefinitelived Intangible Assets, Exchanged Licenses Received Indefinitelived Intangible Assets, Exchanged Licenses Received State income taxes paid Income Tax Paid, State and Local, after Refund Received 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five Right of use assets Deferred Tax Liabilities, ROU Deferred Tax Liabilities, ROU Customer credit Collaborative Arrangement, Rights And Obligations, Customer Credit Collaborative Arrangement, Rights And Obligations, Customer Credit Auditor Location Auditor Location Net NOL carryforwards Operating Loss Carryforwards And Deferred Tax Assets Operating Loss Carryforwards Operating Loss Carryforwards And Deferred Tax Assets Operating Loss Carryforwards Retirement of common stock Total cost to repurchase Stock Repurchased and Retired During Period, Value Deferred revenue Increase (Decrease) in Contract with Customer, Liability Federal Domestic Tax Jurisdiction [Member] Accounts Payable and Other Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Operating Lease Income Comprehensive Income Extensible List Not Disclosed Flag Operating Lease Income Comprehensive Income Extensible List Not Disclosed Flag Operating Lease Income Comprehensive Income Extensible List Not Disclosed Flag Payments Received Broadband Licenses Granted, Payment Received Broadband Licenses Granted, Payment Received Amount representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Other permanent differences Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent Total income taxes paid Income Taxes Paid, Net Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Collaborative Arrangement and Arrangement Other than Collaborative [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Table] Award Timing Disclosures [Line Items] Schedule of Changes in Liability For Asset Retirement Obligations Schedule of Change in Asset Retirement Obligation [Table Text Block] Granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Accrued employee related expenses Employee-related Liabilities, Current Property and Equipment Property, Plant and Equipment Disclosure [Text Block] Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid Less amount classified as current assets Capitalized Contract Cost, Net, Current Deferred state and local income tax benefit State Deferred State and Local Income Tax Expense (Benefit) Severance costs, continued health care coverage Severance Costs, Continued Health Care Coverage Severance Costs, Continued Health Care Coverage Illinois ILLINOIS Net income (loss) Net income (loss) Net Income (Loss) Attributable to Parent Subsequent Event [Table] Subsequent Event [Table] Expiration Date Trading Arrangement Expiration Date Realized clearing costs and anti-windfall payments Broadband License Consideration, Reimbursable Clearing Costs And Anti Windfall Payments Broadband License Consideration, Reimbursable Clearing Costs And Anti Windfall Payments Accelerated vesting provision, change in control, purchase price (in dollars per share) Accelerated Vesting Provision, Change in Control, Purchase Price per Share Accelerated Vesting Provision, Change in Control, Purchase Price per Share Ameren Corporation Ameren Corporation [Member] Ameren Corporation Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Contractual life Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Other adjustments Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Metric [Axis] Metric [Axis] Metric Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net Broadband license, held-for-sale, term Broadband License, Held-For-Sale, Term Broadband License, Held-For-Sale, Term Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Severance and other related charges Cash accruals Restructuring Charges Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Repurchases of common stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Restructuring Cost [Table] Restructuring Cost [Table] Entity Current Reporting Status Entity Current Reporting Status Adjusted product development Research And Development Expense, Adjusted Research And Development Expense, Adjusted Customer [Axis] Customer [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] CASH FLOWS FROM FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract] Income (loss) from operations Operating Income (Loss) 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[Member] Executive Category: Executive Category [Axis] Incentive stock option expense Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent Noncurrent liabilities - included in other liabilities Asset Retirement Obligations, Noncurrent Impairment charges Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill) State income taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Incremental fair value Share-Based Payment Arrangement, Plan Modification, Incremental Cost Current Fiscal Year End Date Current Fiscal Year End Date Subsequent Event Type [Domain] Subsequent Event Type [Domain] Expected term Expected term Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Due to related parties Increase (Decrease) in Due to Related Parties Changes in operating assets and liabilities Increase (Decrease) in Other Operating 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Income Tax Expense (Benefit) Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Weighted average grant-date fair value per option granted (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Sales Revenue, Services, Net Revenue Benchmark [Member] Prepayments received Beginning balance Ending balance Contract with Customer, Liability Performance Based Restricted Stock Performance Based Restricted Stock [Member] Performance Based Restricted Stock CASH AND CASH EQUIVALENTS AND RESTRICTED CASH Cash and Cash Equivalents [Abstract] Spectrum receivable Spectrum Receivable Costs, Current 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Termination Date Trading Arrangement Termination Date Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Share-based compensation arrangement by share-based payment award, target award vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Target Award Vesting Percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Target Award Vesting Percentage Intangibles - FCC licenses Effective Income Tax Rate Reconciliation, Intangible Assets, Amount Effective Income Tax Rate Reconciliation, Intangible Assets, Amount Third Anniversary Share-Based Payment Arrangement, Tranche Three [Member] Weighted average incremental borrowing rate - operating lease liabilities Operating Lease, Weighted Average Discount Rate, Percent Summary of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Weighted-average common shares used to compute basic net income (loss) per share (in shares) Weighted Average Number of Shares Outstanding, Basic Stock repurchase program, remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Advertising and promotional expense Cost of Product and Service Sold Supplemental Disclosure of Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Reduction in indefinite-lived intangible assets Indefinite-Lived Intangible Assets, Period Increase (Decrease) Asset Retirement Obligation [Abstract] Asset Retirement Obligation [Abstract] Exercisable at period end (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Subsequent Events [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Risk-free interest rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Entity Tax Identification Number Entity Tax Identification Number Noncurrent assets Capitalized Contract Cost, Net, Noncurrent Deposits Broadband License Sale, Deposit Broadband License Sale, Deposit Beginning outstanding (in dollars per share) Ending outstanding (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award 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Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Restricted Stock Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Prior year adjustments Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Percent Total liabilities Liabilities Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Operating expenses Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Due to related parties Other Liabilities, Current Asset Class [Domain] Asset Class [Domain] Annual compound growth rate used to calculate stock price levels Share-Based Compensation Arrangement by Share-Based Payment Award, Vesting Requirements, Annual Compound Growth Rate Used To Calculate Stock Price Levels Share-Based Compensation Arrangement by Share-Based Payment Award, Vesting Requirements, Annual Compound Growth Rate Used To Calculate Stock Price Levels Other Other Sundry Liabilities, Current Statement [Line Items] Statement [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Lease [Table] Lease [Table] Lease [Table] Cash and cash equivalents Cash and Cash Equivalent Counterparty Name [Axis] Counterparty Name [Axis] Summary of Restricted Stock and Restricted Stock Units Activity Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Subsequent Event [Line Items] Subsequent Event [Line Items] Common stock Common Stock [Member] Vested in period (in shares) Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Entity Incorporation, State or Country Code Entity Incorporation, State or 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