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Amount, after unamortized (discount) premium, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The number of business days prior to the maturity date where the revolving loan facility is not available.

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Represents the denomination of the principal amount of debt that is used in conversion calculations.

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Represents information pertaining to exchange price of shares attributable to debentures.

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Represents information pertaining to shares attributable to debentures.

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Represents information pertaining to total shares attributable to debentures.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Description of reference rate used for variable rate of debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

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Balance held at close of period in number of shares.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Debt (Details) - USD ($)							12 Months Ended
Debt (Details) - USD ($)	May 12, 2021	Dec. 18, 2020	Nov. 23, 2020	Aug. 27, 2020	Aug. 12, 2020	Jun. 18, 2018	Dec. 31, 2022	Nov. 08, 2022	Oct. 03, 2022	Dec. 31, 2021
2.75% Exchangeable Senior Debentures due 2050
Debt disclosures
Carrying value							$ 560,000,000			$ 585,000,000
Principal amount				$ 575,000,000
Interest rate (as a percent)				2.75%			2.75%
Percentage of redemption and purchase price				100.00%
2.75% Exchangeable Senior Debentures due 2050 \| Charter. \| Series A common stock
Debt disclosures
Shares attributable to debentures per $1,000 original principal amount of Debentures				1.1661
Total shares attributable to debentures				670,507
Debt instrument, face amount per debenture				$ 1,000
Exchange price of shares attributable to debentures				$ 857.56
Exchangeable Senior Debentures Option
Debt disclosures
Principal amount			$ 75,000,000	$ 75,000,000
1.25% Exchangeable Senior Debentures due 2050
Debt disclosures
Carrying value							$ 798,000,000			818,000,000
Principal amount			$ 825,000,000
Interest rate (as a percent)			1.25%				1.25%
Percentage of redemption and purchase price			100.00%
1.25% Exchangeable Senior Debentures due 2050 \| Charter. \| Series A common stock
Debt disclosures
Shares attributable to debentures per $1,000 original principal amount of Debentures			1.1111
Total shares attributable to debentures			916,657
Debt instrument, face amount per debenture			$ 1,000
Exchange price of shares attributable to debentures			$ 900.00
1.75% Exchangeable Senior Debentures due 2046
Debt disclosures
Carrying value							$ 15,000,000			25,000,000
Interest rate (as a percent)							1.75%
1.75% Exchangeable Senior Debentures due 2046 \| GCI Liberty Inc
Debt disclosures
Principal amount						$ 15,000,000
Fair value of debt		$ 26,000,000
Interest rate (as a percent)						1.75%
Percentage of redemption and purchase price						100.00%
1.75% Exchangeable Senior Debentures due 2046 \| Charter. \| GCI Liberty Inc
Debt disclosures
Shares attributable to debentures per $1,000 original principal amount of Debentures						2.6989
Total shares attributable to debentures						39,231
Debt instrument, face amount per debenture						$ 1,000
Exchange price of shares attributable to debentures						$ 370.52
Line of credit
Debt disclosures
Carrying value							$ 397,000,000			399,000,000
SPV \| Margin Loan Facility
Debt disclosures
Carrying value							$ 1,400,000,000			$ 1,300,000,000
Number of business days prior to the maturity date							5 days
Remaining borrowing capacity							$ 900,000,000
SPV \| Margin Loan Facility \| Charter. \| Asset Pledged as Collateral
Debt disclosures
Shares owned							37,300,000
Additional shares pledged as collateral									6,000,000
Value of pledged collateral							$ 12,700,000,000
SPV \| Margin Loan Facility \| Three-month LIBOR
Debt disclosures
Interest rate basis					three-month LIBOR
Basis spread on variable rate	1.50%	1.85%			1.50%
SPV \| Term loan
Debt disclosures
Maximum borrowing capacity								$ 1,150,000,000
SPV \| Revolving Credit Facility
Debt disclosures
Maximum borrowing capacity								1,150,000,000
SPV \| Uncommitted Incremental Term Loan Facility
Debt disclosures
Maximum borrowing capacity								$ 200,000,000