Awards other than stock options granted in period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Income tax withholding Treasury Stock Acquired Shares Withheld Restricted Stock And Restricted Stock Unit Vesting [Member] Shares withheld in payment of income tax withholding owed by employees upon vesting of restricted shares and restricted stock units. Capital expenditures Accrued capital expenditures Carrying value as of the balance sheet date of accrued capital expenditures for long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. Document Type Document Type Receivable Type [Axis] Receivable Type [Axis] Change in accrued expenses related to capital expenditures Changes in accrued expenses related to capital expenditures The increase (decrease) during the reporting period in the amounts payable for capital expenditures. Contingencies Commitments and Contingencies Disclosure [Text Block] Stock options granted in period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Related Party [Axis] Related Party [Axis] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Accounts payable, accrued liabilities and other Increase (Decrease) in Accounts Payable and Accrued Liabilities Noncash interest income, net Amortization of Debt Discount (Premium) Treasury Stock Treasury Stock [Member] Regulatory, connectivity and produced content Franchise, Regulatory and Connectivity Expense Franchise, Regulatory and Connectivity Expense Product Information [Line Items] Product Information [Line Items] Noncontrolling Interest [Table] Noncontrolling Interest [Table] Employee Benefit Plans Retirement Benefits [Text Block] Debt instrument, amount of principal that may be redeemed (percentage) Debt Instrument Percentage Of Principal Amount That May Be Redeemed Percentage of principal amount of debt that may be redeemed. Costs to service customers Cost to Service Customers Cost to Service Customers Wireless spectrum licenses Licensing Agreements [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities and Equity [Abstract] Stock Compensation Plans: Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Distributions to noncontrolling interest Distributions to noncontrolling interest Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders DEFERRED INCOME TAXES Deferred Income Tax Liabilities, Net Residential revenue Residential Product Line [Member] Residential Product Line [Member] Accounting for Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] 4.500% senior notes due February 1, 2024 4.500% Senior Notes due February 1, 2024 [Member] 4.500% Senior Notes due February 1, 2024 [Member] Principal amount, noncurrent portion Debt Instrument Face Amount Noncurrent The stated principal amount of the debt instrument at time of issuance [for debt classified as noncurrent in the balance sheet, which may vary from the carrying amount because of unamortized premium or discount. Security Exchange Name Security Exchange Name 5.125% senior notes due July 1, 2049 5.125% Senior Notes due July 1, 2049 [Member] 5.125% Senior Notes due July 1, 2049 [Member] Senior floating rate notes due February 1, 2024 Senior Floating Rate Notes due February 1, 2024 [Member] Senior Floating Rate Notes due February 1, 2024 [Member] Noncontrolling Interest [Axis] Noncontrolling Interest [Axis] Noncontrolling Interest [Axis] Deferred revenue Deferred Revenue, Current Borrowings of long-term debt Proceeds from Issuance of Long-term Debt Income from operations Operating Income (Loss) Payments for debt issuance costs Payments of Debt Issuance Costs Total current liabilities Liabilities, Current Noncontrolling Interests Noncontrolling Interest Disclosure [Text Block] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Change in noncontrolling interest ownership, net of tax Noncontrolling Interest Increase Decrease From Changes In Subsidiary Ownership Amount of increase (decrease) in noncontrolling interest from changes in subsidiary ownership. Purchase of treasury stock Payments for Repurchase of Common Stock ASSETS Assets [Abstract] Common Noncontrolling Interest Common Noncontrolling Interest [Member] Common Noncontrolling Interest [Member] Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Credit facilities Credit facilities [Member] Credit facilities Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Exercise of stock options Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Entity Address, State or Province Entity Address, State or Province Senior notes and debentures Senior Notes And Debentures [Member] Senior notes and debentures. Operating Lease Payments Operating Lease, Payments Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Retained earnings Retained Earnings (Accumulated Deficit) 4.800% senior notes due March 1, 2050 4.800% senior notes due March 1, 2050 [Member] 4.800% senior notes due March 1, 2050 [Member] 5.050% senior notes due March 30, 2029 5.050% Senior Notes due March 30, 2029 [Member] 5.050% Senior Notes due March 30, 2029 Operating Lease, Right-of-Use Asset Operating Lease, Right-of-Use Asset Loss on extinguishment of debt (see Note 6) Gain (Loss) on Extinguishment of Debt Treasury stock acquired (shares) Treasury Stock, Shares, Acquired 2022 Lessee, Operating Lease, Liability, to be Paid, Year One Class B Common Stock Common Class B [Member] CASH PAID FOR TAXES Income Taxes Paid SHAREHOLDERS’ EQUITY: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Four Unrecognized compensation cost Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount 6.484% senior notes due October 23, 2045 6.484% Senior Notes Due October 23, 2045 [Member] 6.484% Senior Notes Due October 23, 2045 INVESTMENT IN CABLE PROPERTIES: Investment In Cable Properties [Abstract] Impact of noncontrolling interest purchased Impact of noncontrolling interest purchased Impact of noncontrolling interest purchased Borrowings for real estate investments through variable interest entities Borrowings from real estate investments through variable interest entities Amount of cash inflow from borrowings from real estate investments through variable interest entities Preferred stock; $0.001 par value; 250 million shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Operating costs and expenses (exclusive of items shown separately below) Operating costs and expenses (exclusive of items shown separately in the consolidated statements of operations) Operating Expenses Common stock, par value (dollars per share) Common Stock, Par or Stated Value Per Share OTHER LONG-TERM LIABILITIES Other Liabilities, Noncurrent Other, net Payments for (Proceeds from) Other Investing Activities Dr. John Malone's voting interest in Qurate Retail, Inc. (percentage) Dr. John Malone's, a member of Charter's board of directors, voting interest in Qurate Retail, Inc. Dr. John Malone's, a member of Charter's board of directors, voting interest in Qurate Retail, Inc.. Video Residential Video Product Line [Member] Residential Video Product Line [Member] Change in fair value of cross-currency derivative instruments Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments 4.250% senior notes due February 1, 2031 4.250% senior notes due February 1, 2031 [Member] 4.250% senior notes due February 1, 2031 Stock compensation expense APIC, Share-based Payment Arrangement, Increase for Cost Recognition Advance Newhouse Programming Partnership's ownership percentage in Series C preferred stock of Discovery Communications, Inc. (percentage) Advance Newhouse Programming Partnership Ownership Percentage In Discovery Series C Preferred Stock Percentage represents Advance Newhouse Programming Partnership’s ownership percentage in the Series C preferred stock of Discovery Communications, Inc. Dr. Malone and Mr. Miron, each a member of Charter’s board of directors, also serve on the board of directors of Discovery Communications, Inc. Charter purchases programming from Discovery Communications, Inc. pursuant to agreement(s) entered into prior to Dr. Malone and Mr. Miron joining Charter's board of directors. Marketing Marketing and Advertising Expense 3.900% senior notes due June 1, 2052 3.900% senior notes due June 1, 2052 [Member] 3.900% senior notes due June 1, 2052 3.850% senior notes due April 1, 2061 3.850% Senior Notes Due April 1, 2061 [Member] 3.850% Senior Notes Due April 1, 2061 5.375% senior notes due June 1, 2029 5.375% senior notes due June 1, 2029 [Member] 5.375% senior notes due June 1, 2029 [Member] Award expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Foreign currency remeasurement of Sterling Notes to U.S. dollars Foreign Currency Transaction Gain (Loss), Realized Statement [Line Items] Statement [Line Items] Class of Stock [Domain] Class of Stock [Domain] EARNINGS PER COMMON SHARE ATTRIBUTABLE TO CHARTER SHAREHOLDERS: Earnings Per Share, Basic and Diluted [Abstract] Interest Interest Payable, Current Statement [Table] Statement [Table] Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Five Interest cost Defined Benefit Plan, Interest Cost Statistical Measurement [Axis] Statistical Measurement [Axis] Charter Charter [Member] Charter Communications, Inc. Preferred stock, shares issued (shares) Preferred Stock, Shares Issued Income Statement Effects of Financial Instruments Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Charter Holdings convertible preferred units Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities 4.500% senior notes due May 1, 2032 4.500% senior notes due May 1, 2032 [Member] 4.500% senior notes due May 1, 2032 Operating Costs and Expenses Operating Costs and Expenses [Text Block] The entire disclosure for Operating Costs and Expenses. Entity Small Business Entity Small Business Other operating expenses, net Other operating expenses, net Other Operating Income (Expense), Net Lessee, Operating Lease, Liability, Payment, Due [Abstract] Lessee, Operating Lease, Liability, Payment, Due [Abstract] Rollforward of Consolidated Shareholders' Equity: Increase (Decrease) in Stockholders' Equity [Roll Forward] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Issuance of equity Proceeds from Issuance of Common Stock Collateral holiday agreement, term Collateral Holiday Agreement Term Number of years liability position derivative instruments are covered by a collateral holiday agreement. Amendment Flag Amendment Flag Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Additional 3.850% Senior Notes Due April 1, 2061 Additional 3.850% Senior Notes Due April 1, 2061 [Member] Additional 3.850% Senior Notes Due April 1, 2061 Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Purchase of noncontrolling interest (shares) Noncontrolling Interest, Purchase of Interests, Shares Purchased Number of shares purchased from noncontrolling shareholders resulting in a decrease in noncontrolling interests during the period. Class of Treasury Stock Class of Treasury Stock [Table Text Block] Other Other Accrued Liabilities, Current 8.375% senior debentures due March 15, 2023 8.375% Senior Debentures Due March 15, 2023 [Member] 8.375% Senior Debentures Due March 15, 2023 Schedule of supplemental balance sheet information Supplemental Balance Sheet Disclosures [Text Block] Net cash flows from operating activities Net Cash Provided by (Used in) Operating Activities Distributions to noncontrolling interest Payments of Ordinary Dividends, Noncontrolling Interest Entity Central Index Key Entity Central Index Key Related Party [Domain] Related Party [Domain] Schedule of effects on statement of shareholders' equity due to ownership changes Schedule of effects on statement of shareholders' equity due to ownership changes [Table Text Block] Schedule of noncontrolling interest disclosure due to changes in ownership and the effect on the statement of shareholders' equity. Related Party Transactions: Related Party Transaction [Line Items] Accrued liabilities: Accrued Liabilities, Current [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Carrying Value and Fair Value of Debt Fair Value, by Balance Sheet Grouping [Table Text Block] Share buybacks Treasury Stock Acquired Shares Repurchased [Member] Shares repurchased under a stock repurchase program. Derivatives Policy Derivatives, Policy [Policy Text Block] 4.500% senior notes due June 1, 2033 4.500% senior notes due June 1, 2033 [Member] 4.500% senior notes due June 1, 2033 Net income attributable to Charter shareholders after assumed conversions Net Income (Loss) Attributable to Parent, Diluted Other pension benefits, net (see Note 21) Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] 5.125% senior notes due May 1, 2027 5.125% Senior Notes Due May 1, 2027 [Member] 5.125% Senior Notes Due May 1, 2027 [Member] Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Treasury Stock Acquired, Average Cost Per Share Treasury Stock Acquired, Average Cost Per Share Indefinite-lived Intangible Assets: Indefinite-lived Intangible Assets [Line Items] 4.500% senior notes due August 15, 2030 4.500% senior notes due August 15, 2030 [Member] 4.500% senior notes due August 15, 2030 CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Notional amount Derivative, Notional Amount Amortization expense Amortization of Intangible Assets 2024 Lessee, Operating Lease, Liability, to be Paid, Year Three OTHER NONCURRENT ASSETS Other noncurrent assets Other Assets, Noncurrent Investments Equity Method Investments and Joint Ventures Disclosure [Text Block] Issuance of equity Stock Issued During Period, Value, New Issues Small and medium business Commercial Small and Medium Business Product Line [Member] Commercial Small and Medium Business Product Line [Member] Total assets Assets Related Party Transactions Related Party Transactions Disclosure [Text Block] Treasury Stock Acquired [Axis] Treasury Stock Acquired [Axis] Treasury Stock Acquired [Axis] Operating Costs and Expenses Operating Costs and Expenses [Table Text Block] Tabular disclosure of the detailed components of Operating Costs and Expenses. Title of 12(b) Security Title of 12(b) Security Net Carrying Amount Finite-Lived Intangible Assets, Net Subsequent Event Type [Axis] Subsequent Event Type [Axis] Liberty Broadband Liberty Broadband [Member] Liberty Broadband 5.875% senior notes due May 1, 2027 5.875% senior notes due May 1, 2027 [Member] 5.875% senior notes due May 1, 2027 [Member] Ownership percentage held by noncontrolling interest (percentage) Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Other intangible assets Other Intangible Assets [Member] collateral cap term collateral cap term Number of years liability position derivative instruments are covered by a collateral cap. Product and Service [Axis] Product and Service [Axis] 4.000% senior notes due September 1, 2021 4.000% Senior Notes Due September 1, 2021 [Member] 4.000% Senior Notes Due September 1, 2021 Remaining period over which to recognize unrecognized compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Undiscounted lease cash flow commitments Lessee, Operating Lease, Liability, Undiscounted Excess Amount Other Expenses, Net Other Nonoperating Income and Expense [Text Block] Purchase of noncontrolling interest Payments for Repurchase of Redeemable Noncontrolling Interest Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Level 1 Fair Value, Inputs, Level 1 [Member] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Voice Residential Voice Product Line [Member] Residential Voice Product Line [Member] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] 2.800% senior notes due April 1, 2031 2.800% senior notes due April 1, 2031 [Member] 2.800% senior notes due April 1, 2031 Debt Instrument [Axis] Debt Instrument [Axis] Additional Paid-in Capital Additional Paid-in Capital [Member] Interest expense, net Interest Income (Expense), Net Class of Stock [Line Items] Class of Stock [Line Items] Purchases of treasury stock Value of treasury stock shares repurchased/withheld Treasury Stock, Value, Acquired, Cost Method Derivative Liability Derivative Liability Common Stock [Abstract] Common Stock [Abstract] Common Stock [Abstract] Adjustments to reconcile consolidated net income to net cash flows from operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Charter Operating Charter Operating [Member] Charter Operating [Member] Maximum amount of collateral required to be posted Maximum amount of collateral required to be posted Maximum amount of collateral required to be posted under collateral cap Gain (Loss) On Financial Instruments, Net Gain (Loss) On Financial Instruments, Net [Abstract] Gain (Loss) On Financial Instruments, Net [Abstract] Gain (Loss) on Sale of Equity Investments Gain (Loss) on Sale of Equity Investments Time Warner Cable Time Warner Cable LLC [Member] Time Warner Cable LLC Purchase of noncontrolling interest, net of tax Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Common stock, shares outstanding (shares) Common Stock, Shares, Outstanding Entity Information [Line Items] Entity Information [Line Items] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Reconciling impact from discounting Reconciling impact from discounting capital lease liabilities Reconciling impact from discounting capital lease liabilities 4.464% senior notes due July 23, 2022 4.464% Senior Notes Due July 23, 2022 [Member] 4.464% Senior Notes Due July 23, 2022 COSTS AND EXPENSES: Operating Costs and Expenses [Abstract] Revolving Credit Facility Revolving Credit Facility [Member] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Total investment in cable properties, net Total investment in cable properties, net Sum of carrying amounts as of the balance sheet date of property, plant and equipment, franchises, customer relationships, net and goodwill. Exercise cost Treasury Stock Acquired Shares Withheld Stock Option Exercise Costs [Member] Shares withheld representing the exercise costs owed by employees upon exercise of stock options. Subsequent Event Subsequent Event [Member] Common stock, shares authorized (shares) Common Stock, Shares Authorized Weighted average Charter Holdings convertible preferred units Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements Assumed exercise or issuance of shares relating to stock plans Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Proceeds from exercise of stock options Proceeds from Stock Options Exercised Long-term portion included within other long-term liabilities Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Income Statement [Abstract] Income Statement [Abstract] (Gain) loss on disposal of assets, net Gain (Loss) on Disposition of Assets Noncurrent portion of operating lease liability Operating Lease, Liability, Noncurrent 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Four Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] 5.375% senior notes due April 1, 2038 5.375% Senior Notes due April 1, 2038 [Member] 5.375% Senior Notes due April 1, 2038 [Member] CURRENT ASSETS: Assets, Current [Abstract] Franchises Franchise Rights [Member] Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Consolidated Entities [Axis] Consolidated Entities [Axis] Preferred stock, par value (dollars per share) Preferred Stock, Par or Stated Value Per Share Dr. John Malone's voting interest in Discovery Communications, Inc. for election of directors (percentage) Dr. John Malone's, a member of Charter's board of directors, voting interest in Discovery Communications, Inc. for election of directors Dr. John Malone's, a member of Charter's board of directors, voting interest in Discovery Communications, Inc. for election of directors Legal Entity [Axis] Legal Entity [Axis] Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment City Area Code City Area Code Document Period End Date Document Period End Date Long-Term Debt Long-term Debt [Text Block] Franchises, Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Gain (loss) on financial instruments, net Gain (loss) on financial instruments, net (see Note 9) Gain (Loss) on Derivative Instruments, Net, Pretax 4.000% senior notes due March 1, 2023 4.000% Senior Notes Due March 1, 2023 [Member] 4.000% Senior Notes Due March 1, 2023 [Member] Current portion included within accounts payable and accrued liabilities Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Consolidated net income Consolidated net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Revenue Disaggregation of Revenue [Table Text Block] Purchase of noncontrolling interest (price per share) Noncontrolling Interest, Purchase of Interests, Shares Purchased, Price Per Share Price per share of shares purchased from noncontrolling shareholders resulting in a decrease in noncontrolling interests during the period. Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Stock compensation expense Share-based Payment Arrangement, Noncash Expense Entity [Domain] Entity [Domain] 2.300% senior notes due February 1, 2032 2.300% senior notes due February 1, 2032 [Member] 2.300% senior notes due February 1, 2032 Other, net Proceeds from (Payments for) Other Financing Activities Cover page. Cover [Abstract] 7.300% senior debentures due July 1, 2038 7.300% Senior Debentures Due July 1, 2038 [Member] 7.300% Senior Debentures Due July 1, 2038 Common Stock Common Stock [Text Block] The entire disclosure for common stock. Equity Method Investee Equity Method Investee [Member] OTHER INCOME (EXPENSES): Other Expenses [Abstract] Collateral cap, percentage of position covered Collateral cap, percentage of liability covered Percentage of liability position derivative instruments covered by a collateral cap. 5.250% sterling senior notes due July 15, 2042 (b) 5.250% Sterling Senior Notes Due July 15, 2042 [Member] 5.250% Sterling Senior Notes Due July 15, 2042 Accreted Value Carrying Value Long-term Debt Operating Leases Lessee, Operating Leases [Text Block] Class C Common Stock Common Class C [Member] Customer relationships Customer Relationships [Member] Revenue [Abstract] Revenue [Abstract] Revenue [Abstract] Total costs and expenses Costs and Expenses Equity Award Grants Share-based Payment Arrangement, Activity [Table Text Block] Equity Components [Axis] Equity Components [Axis] Restricted stock Restricted Stock [Member] Debt repurchased, principal amount Debt Instrument, Repurchased Face Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Consolidated Entities [Domain] Consolidated Entities [Domain] Operating lease liabilities Operating Lease, Liability, Current Payments to related parties Payments To Related Parties Cash payments made to related parties. Real estate investment through variable interest entity Real estate investment through variable interest entity Amount of cash outflow related to a real estate investment through variable interest entity Less: Net income attributable to noncontrolling interests Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Entity Interactive Data Current Entity Interactive Data Current Net periodic pension benefits Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Fair Value Measurements Fair Value Disclosures [Text Block] CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Derivatives: Derivatives, Fair Value [Line Items] Nine months ended December 31, 2021 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Preferred Noncontrolling Interest Preferred Noncontrolling Interest [Member] Preferred Noncontrolling Interest [Member] Additional paid-in capital Additional Paid in Capital, Common Stock Depreciation and amortization Depreciation, Amortization and Accretion, Net Entity Registrant Name Entity Registrant Name Subsequent Event Type [Domain] Subsequent Event Type [Domain] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Weighted average discount rate - operating leases (percentage) Operating Lease, Weighted Average Discount Rate, Percent Other Other Cost and Expense, Operating Number of reportable segments Number of Reportable Segments Dr. John Malone's voting interest in Liberty Broadband (percentage) Dr. John Malone's voting interest in Liberty Broadband Dr. John Malone's, a member of Charter's board of directors, voting interest Liberty Broadband Corporation Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Investments [Abstract] Investments [Abstract] Accounts receivable, less allowance for doubtful accounts of $173 and $217, respectively Accounts Receivable, Net Accounts Receivable, after Allowance for Credit Loss, Current Other Expenses, Net Schedule of Other Nonoperating Expense, by Component [Table Text Block] Minority Interest Ownership Percentage Threshold Noncontrolling Interest, Ownership Percentage by Parent 5.750% senior notes due April 1, 2048 5.750% Senior Notes due April 1, 2048 [Member] 5.750% Senior Notes due April 1, 2048 [Member] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Principal amount, current portion Debt Instrument Face Amount Current The stated principal amount of the debt instrument at time of issuance [for debt classified as current in the balance sheet], which may vary from the carrying amount because of unamortized premium or discount. Organization and Basis of Presentation [Abstract] Organization and Basis of Presentation [Abstract] Organization and Basis of Presentation [Abstract] Schedule of Noncontrolling Interest Purchased Schedule of Noncontrolling Interest Purchased [Table Text Block] Schedule of noncontrolling interest disclosure which includes number of units purchased during the period, average price paid, total amount paid and the effect on the statement of shareholders' equity. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Trademarks Trademarks [Member] Other Operating Expenses, Net Other Operating Income and Expense [Text Block] 5.375% senior notes due May 1, 2047 5.375% Senior Notes Due May 1, 2047 [Member] 5.375% Senior Notes Due May 1, 2047 [Member] Mobile Mobile [Member] Mobile Goodwill Goodwill Goodwill Stock Compensation Plans [Abstract] Stock Compensation Plans [Abstract] Stock Compensation Plans [Abstract] Mobile Mobile Mobile costs and expenses 6.750% senior debentures due June 15, 2039 6.750% Senior Debentures Due June 15, 2039 [Member] 6.750% Senior Debentures Due June 15, 2039 3.700% senior notes due April 1, 2051 3.700% senior notes due April 1, 2051 [Member] 3.700% senior notes due April 1, 2051 Document Transition Report Document Transition Report Cash payments received from HSN, Inc. and QVC, Inc. Cash Payments Received From HSN And QVC Cash payments received from HSN and QVC for related party transactions. Total other income (expenses), net Total Nonoperating Income Expense including Interest Expense, Net Total Nonoperating Income Expense including Interest Expense, Net Principal Amount Debt Instrument, Face Amount Level 2 Fair Value, Inputs, Level 2 [Member] 5.750% sterling senior notes due June 2, 2031 (a) 5.750% Sterling Senior Notes Due June 2, 2031 [Member] 5.750% Sterling Senior Notes Due June 2, 2031 Document Quarterly Report Document Quarterly Report Indefinite-lived and Finite-lived Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Accounts payable – trade Accounts Payable, Trade, Current 3.750% senior notes due February 15, 2028 3.750% Senior Notes Due February 15, 2028 [Member] 3.750% Senior Notes Due February 15, 2028 [Member] Entities [Table] Entities [Table] Recently Issued Accounting Standards Accounting Standards Update and Change in Accounting Principle [Text Block] Derivative Contract [Domain] Derivative Contract [Domain] Expected Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Weighted average common shares outstanding, diluted (shares) Weighted average common shares outstanding, diluted (shares) Weighted Average Number of Shares Outstanding, Diluted Basic (dollars per share) Basic earnings per common share attributable to Charter shareholders (dollars per share) Earnings Per Share, Basic Commercial revenue Commercial Product Line [Member] Commercial Product Line [Member] Other Income and Expenses [Abstract] Schedule of Indefinite-Lived Intangible Assets [Table] Schedule of Indefinite-Lived Intangible Assets [Table] Entity File Number Entity File Number Accounts Payable and Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] 4.750% senior notes due March 1, 2030 4.750% senior notes due March 1, 2030 [Member] 4.750% senior notes due March 1, 2030 [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Weighted average remaining operating lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Included within other noncurrent assets Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] 5.875% senior debentures due November 15, 2040 5.875% Senior Debentures Due November 15, 2040 [Member] 5.875% Senior Debentures Due November 15, 2040 Internet Residential Internet Product Line [Member] Residential Internet Product Line [Member] Net cash flows from financing activities Net Cash Provided by (Used in) Financing Activities Repayments of long-term debt Repayments of Long-term Debt Stock compensation expense Share-based Payment Arrangement, Expense Unrecognized Tax Benefits Unrecognized Tax Benefits Programming Programming Expense Programming Expense Common stock Common Stock, Value, Issued Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Finite-lived Intangible Assets: Finite-Lived Intangible Assets [Line Items] Customer relationships, net Customer relationships, net Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the value of the business relationship with existing customers (less anticipated churn). Document Fiscal Year Focus Document Fiscal Year Focus 2022 Finite-Lived Intangible Asset, Expected Amortization, Year Two Current portion of long-term debt Accreted value, current portion Long-term Debt, Current Maturities Entity Current Reporting Status Entity Current Reporting Status 5.750% senior notes due February 15, 2026 5.750% Senior Notes Due February 15, 2026 [Member] 5.750% Senior Notes Due February 15, 2026 Retirement Benefits [Abstract] Cross Currency Derivatives Currency Swap [Member] Receivable [Domain] Receivable [Domain] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Common stock, shares issued (shares) Common Stock, Shares, Issued Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Advertising sales Advertising sales [Member] Advertising sales [Member] Schedule of Product Information [Table] Schedule of Product Information [Table] Collateral Holiday Agreement Percentage Extended to November 2022 Collateral Holiday Agreement Percentage Extended to November 2022 Collateral Holiday Agreement Percentage Extended to November 2022 Purchase price of noncontrolling interest Minority Interest Decrease From Redemptions Purchase Price Gross purchase price related to the decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). Total Operating Lease Liability Operating Lease, Liability LONG-TERM DEBT Accreted value, noncurrent portion Long-term Debt, Excluding Current Maturities 5.500% senior debentures due September 1, 2041 5.500% Senior Debentures Due September 1, 2041 [Member] 5.500% Senior Debentures Due September 1, 2041 Accounts receivable Increase (Decrease) in Accounts Receivable Long-term Debt: Debt Instrument [Line Items] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Total Charter shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders’ equity Liabilities and Equity Accounts Payable and Accrued Liabilities [Abstract] Accounts Payable and Accrued Liabilities [Abstract] Income Taxes Income Tax Disclosure [Text Block] Entity Address, City or Town Entity Address, City or Town Labor Employee-related Liabilities, Current Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Restricted stock units Restricted Stock Units (RSUs) [Member] Accounting for Derivative Instruments and Hedging Activities [Abstract] Accounting for Derivative Instruments and Hedging Activities [Abstract] Accounting for Derivative Instruments and Hedging Activities [Abstract] Loss Contingency, Damages Awarded, Value Loss Contingency, Damages Awarded, Value Operating Lease Expense Operating Lease, Cost Total Charter Shareholders’ Equity Parent [Member] Accounts payable and accrued liabilities Total accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Equipment installment plan receivable Equipment installment plan receivable [Member] Equipment installment plan receivable Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Noncontrolling Interests [Abstract] Noncontrolling Interests [Abstract] Noncontrolling Interests [Abstract] Other, net Other Noncash Income (Expense) Debt instrument redemption price in the event of change of control events (percentage) Debt Instrument Redemption Price Percentage Change Of Control Event Percentage price of original principal amount of debt at which debt can be redeemed by the issuer in the event of change of control events. Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Equity Component [Domain] Equity Component [Domain] Property, plant and equipment, net of accumulated depreciation of $32,587 and $31,639, respectively Property, Plant and Equipment, Net Property, Plant and Equipment, Net 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Three 6.384% senior notes due October 23, 2035 6.384% Senior Notes Due October 23, 2035 [Member] 6.384% Senior Notes Due October 23, 2035 Entity Tax Identification Number Entity Tax Identification Number Stock Compensation Plans Share-based Payment Arrangement [Text Block] Net income attributable to Charter shareholders Net income attributable to Charter shareholders Net Income (Loss) Attributable to Parent Indefinite-lived intangible assets and goodwill Indefinite Lived Intangible Assets Including Goodwill Sum of the carrying amounts as of the balance sheet date of intangible assets having a projected indefinite period of benefit. Changes in operating assets and liabilities, net of effects from acquisitions and dispositions: Increase (Decrease) in Operating Capital [Abstract] Current liabilities Other Liabilities, Current Nine months ended December 31, 2021 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Franchises Indefinite-Lived Franchise Rights Leases [Abstract] Leases [Abstract] Advance Newhouse Programming Partnership's voting interest in Discovery Communications, Inc. for election of directors (percentage) Advance Newhouse Programming Partnership's voting interest in Discovery Communications, Inc. for election of directors Advance Newhouse Programming Partnership's voting interest in Discovery Communications, Inc. for election of directors Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total current assets Current assets Assets, Current Current Fiscal Year End Date Current Fiscal Year End Date Earnings Per Share [Abstract] Earnings Per Share [Abstract] 5.000% senior notes due February 1, 2028 5.000% Senior Notes Due February 1, 2028 [Member] 5.000% Senior Notes Due February 1, 2028 [Member] Finance Lease Liabilities Finance Lease, Liability Gregory Maffei's voting interest in Liberty Broadband (percentage) Gregory Maffei's voting interest in Liberty Broadband Gregory Maffei's voting interest in Liberty Broadband Advance Newhouse Programming Partnership's ownership percentage in Series A preferred stock of Discovery Communications, Inc. (percentage) Advance Newhouse Programming Partnership Ownership Percentage In Discovery Series A Preferred Stock Percentage represents Advance Newhouse Programming Partnership’s ownership percentage in the Series A preferred stock of Discovery Communications, Inc. Dr. Malone and Mr. Miron, each a member of Charter’s board of directors, also serve on the board of directors of Discovery Communications, Inc. Charter purchases programming from Discovery Communications, Inc. pursuant to agreement(s) entered into prior to Dr. Malone and Mr. Miron joining Charter's board of directors. 6.834% senior notes due October 23, 2055 6.834% Senior Notes Due October 23, 2055 [Member] 6.834% Senior Notes Due October 23, 2055 Document Fiscal Period Focus Document Fiscal Period Focus Special charges, net Other Nonrecurring (Income) Expense Debt instrument issue price (percentage) Debt Instrument Issue Price Percentage Percentage price of original principal amount of debt at which debt was issued. Mortgage note liability Mortgages [Member] Debt Instrument Redemption Price (Percentage) Debt Instrument, Redemption Price, Percentage Entity Filer Category Entity Filer Category Common Stock Common Stock [Member] Product and Service [Domain] Product and Service [Domain] 6.550% senior debentures due May 1, 2037 6.550% Senior Debentures Due May 1, 2037 [Member] 6.550% Senior Debentures Due May 1, 2037 Recently Issued Accounting Standards [Abstract] Recently Issued Accounting Standards [Abstract] Recently Issued Accounting Standards [Abstract] Dr. John Malone's ownership percentage in Discovery Communications, Inc. (percentage) Dr. John Malone's, a member of Charter's board of directors, ownership percentage in Discovery Communications, Inc. Dr. John Malone's, a member of Charter's board of directors, ownership percentage in Discovery Communications, Inc. Issuance of equity, shares Stock Issued During Period, Shares, New Issues Availability under credit facilities Line of Credit Facility, Remaining Borrowing Capacity Gross Carrying Amount Finite-Lived Intangible Assets, Gross 8.375% senior debentures due July 15, 2033 8.375% Senior Debentures Due July 15, 2033 [Member] 8.375% Senior Debentures Due July 15, 2033 Stated interest rate (percentage) Debt Instrument, Interest Rate, Stated Percentage CCO Holdings CCO holdings [Member] Another company which is controlled, directly or indirectly, by its parent. The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree. Property, plant and equipment, accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Class A Common Stock Common Class A [Member] Property and casualty Accrued Property And Casualty Insurance, Current Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from property and casualty risks. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Related Party Transactions [Abstract] Related Party Transactions [Abstract] NET DECREASE IN CASH AND CASH EQUIVALENTS Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect 4.908% senior notes due July 23, 2025 4.908% Senior Notes Due July 23, 2025 [Member] 4.908% Senior Notes Due July 23, 2025 Other income (expenses), net Other income (expenses), net Nonoperating Income (Expense) Fair Value Measurements [Abstract] Fair Value Measurements [Abstract] Fair Value Measurements [Abstract] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Schedule of future minimum lease payments for operating leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Stock options Share-based Payment Arrangement, Option [Member] Weighted average common shares outstanding, basic (shares) Weighted Average Number of Shares Outstanding, Basic Ownership [Axis] Ownership [Axis] Treasury stock, shares (shares) Treasury Stock, Shares Collateral holiday agreement, percentage of position covered Collateral Holiday Agreement Percentage Percentage of liability position derivative instruments covered by a collateral holiday agreement. short term leases and variable leases costs short term leases and variable leases costs Amount of short-term leases and variable leases costs. Ownership [Domain] Ownership [Domain] Treasury Stock Acquired [Domain] Treasury Stock Acquired [Domain] [Domain] for Treasury Stock Acquired [Axis] Noncontrolling Interest [Domain] Noncontrolling Interest [Domain] [Domain] for Noncontrolling Interest [Axis] Revenue Revenue from Contract with Customer [Text Block] CASH PAID FOR INTEREST Interest Paid, Excluding Capitalized Interest, Operating Activities Other Operating Expenses, Net Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Total shareholders’ equity Balance Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest 3.500% senior notes due June 1, 2041 3.500% Senior Notes due June 1, 2041 [Member] 3.500% Senior Notes due June 1, 2041 Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Fair Value Long-term Debt, Fair Value Finite-Lived Intangible Asset, Expected Amortization, Year One Finite-Lived Intangible Asset, Expected Amortization, Year One REVENUES Revenues Class of Stock [Axis] Class of Stock [Axis] Income tax expense Income tax expense Income Tax Expense (Benefit) A/N A/N [Member] A/N CASH AND CASH EQUIVALENTS, beginning of period CASH AND CASH EQUIVALENTS, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Diluted (dollars per share) Diluted earnings per common share attributable to Charter shareholders (dollars per share) Earnings Per Share, Diluted Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Local Phone Number Local Phone Number Programming costs Program Rights Obligations, Current Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Noncontrolling Interests: Noncontrolling Interest [Line Items] Long-term Debt Summary Schedule of Debt [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Entity Emerging Growth Company Entity Emerging Growth Company Indefinite-lived intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill) Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Deferred income taxes Deferred Income Tax Expense (Benefit) Award Type [Axis] Award Type [Axis] 4.500% senior debentures due September 15, 2042 4.500% Senior Debentures Due September 15, 2042 [Member] 4.500% Senior Debentures Due September 15, 2042 Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Maximum Maximum [Member] Preferred stock, shares authorized (shares) Preferred Stock, Shares Authorized Noncontrolling Interests Noncontrolling Interest [Member] Percent of total operating costs and expenses paid to Discovery Communications, Inc. and Starz (percentage) Percent of total operating costs and expenses paid to Discovery and Starz Percent of total operating costs and expenses paid to Discovery and Starz Retained Earnings Retained Earnings [Member] Preferred stock, shares outstanding (shares) Preferred Stock, Shares Outstanding Gregory Maffei's voting interest in Qurate Retail, Inc. (percentage) Gregory Maffei's, a member of Charter's board of directors, voting interest in Qurate Retail, Inc. Gregory Maffei's, a member of Charter's board of directors, voting interest in Qurate Retail, Inc. Net Periodic Pension Benefit Schedule of Net Benefit Costs [Table Text Block] Fair Value Measurements: Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] 4.200% senior notes due March 15, 2028 4.200% Senior Notes Due March 15, 2028 [Member] 4.200% Senior Notes Due March 15, 2028 [Member] Net cash flows from investing activities Net Cash Provided by (Used in) Investing Activities Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Domain] Award Type [Domain] Other Other services [Member] Other services [Member] Trading Symbol Trading Symbol Time Warner Cable Enterprises Time Warner Cable Enterprises LLC [Member] Time Warner Cable Enterprises LLC Treasury stock at cost; 6,150,696 and no shares, respectively Treasury Stock, Value Earnings Per Share Earnings Per Share [Text Block] Taxes and regulatory fees Accrued Taxes And Regulatory Fees, Current Carrying value as of the balance sheet date of obligations incurred through that date for taxes and regulatory fees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). CURRENT LIABILITIES: Liabilities, Current [Abstract] Entity Shell Company Entity Shell Company 5.500% senior notes due May 1, 2026 5.500% Senior Notes Due May 1, 2026 [Member] 5.500% Senior Notes Due May 1, 2026 Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Enterprise Commercial Enterprise Product Line [Member] Commercial Enterprise Product Line [Member]