| Debt - Narrative (Details)
 |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  | 
| Feb. 25, 2022  USD ($) | Dec. 31, 2021  USD ($)  $ / shares  shares | Feb. 24, 2021  USD ($) | Dec. 31, 2020  USD ($) | Nov. 09, 2020  USD ($) | Nov. 26, 2019  USD ($)  $ / shares  shares | Dec. 10, 2018  USD ($) | Jun. 22, 2018  USD ($) | Mar. 06, 2018  USD ($)  $ / shares  shares | Jan. 23, 2017  USD ($)  $ / shares | Jan. 31, 2022  USD ($) | Sep. 30, 2021  USD ($) | Aug. 31, 2021  USD ($) | Nov. 30, 2020  USD ($)  $ / shares  shares | Dec. 31, 2018  USD ($)  $ / shares  shares | Dec. 31, 2021  USD ($)  $ / shares  shares | Dec. 31, 2020  USD ($) | Dec. 31, 2019  USD ($) | Dec. 03, 2021  USD ($) | Oct. 31, 2021 | Jun. 30, 2021  USD ($) | Jun. 30, 2020  USD ($) | Apr. 22, 2020 | Mar. 27, 2020  USD ($) | Jun. 30, 2019  USD ($) | Feb. 01, 2019  USD ($) | Dec. 03, 2018 | Jul. 31, 2017  USD ($) | Aug. 17, 2016  USD ($) | Oct. 17, 2013  USD ($) | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Losses on extinguishment of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (80,000,000) | $ (40,000,000) | $ (57,000,000) |  |  |  |  |  |  |  |  |  |  |  |  | 
| 1.375% Cash Convertible Senior Notes due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 1.375% |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.375% |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.375% | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000 | 
| 2.25% Exchangeable Senior Debentures due 2048 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.25% |  |  |  |  | 2.25% |  |  |  |  |  |  | 2.25% |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 385,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| 2.25% Exchangeable Senior Debentures due 2048 | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extinguishment of Debt, Amount |  |  |  |  |  |  |  |  |  |  | $ 664,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| 0.5% Exchangeable Senior Debentures due 2050 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 920,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Live Nation Margin Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Line of Credit Facility, Remaining Borrowing Capacity |  | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Maximum borrowing capacity |  |  |  |  | $ 200,000,000 |  | $ 600,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |  |  |  |  | $ 270,000,000 |  |  |  |  |  |  | 
| Undrawn commitment fee |  |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Live Nation Margin Loan | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument, Description of Variable Rate Basis |  |  |  |  | LIBOR |  | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 2.00% |  | 1.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Minimum | Live Nation Margin Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument, unused borrowing capacity, fee, percent |  |  |  |  |  |  | 0.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Maximum | Live Nation Margin Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument, unused borrowing capacity, fee, percent |  |  |  |  |  |  | 0.85% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Live Nation | 2.25% Exchangeable Senior Debentures due 2048 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Shares underlying the debentures | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Conversion price for exchangeable debt | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 66.28 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Live Nation | 0.5% Exchangeable Senior Debentures due 2050 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Shares underlying the debentures | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Conversion price for exchangeable debt | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 90.10 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument redemption price percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Live Nation | Live Nation Margin Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument, Collateral Amount |  | $ 1,074,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,074,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Shares | shares |  | 9,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| 1.375% Convertible Notes Bond Hedge Transaction | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Forward contract, number of underlying shares | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,271,475 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Securities Basket price per share | $ / shares |  | $ 69.64 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 69.64 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Warrant expiration period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 81 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Warrant transaction | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Securities Basket price per share | $ / shares |  | $ 69.64 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 69.64 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Class of Warrant or Right, Outstanding | shares |  | 5,271,475 |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,271,475 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares |  | $ 61.16 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 61.16 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Formula One Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Losses on extinguishment of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Formula One Group | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Securities basket conversion ratio from shares of Liberty Media Corporation common stock |  | 0.25 |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.25 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Formula One Group | 1% Cash Convertible Notes Due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 1.00% |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  | $ 450,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Conversion amount |  |  |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Formula One Group | 1% Cash Convertible Notes Due 2023 | Series C |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument, Convertible, Conversion Ratio |  |  |  |  |  |  |  |  |  | 27.11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Conversion price for exchangeable debt | $ / shares |  |  |  |  |  |  |  |  |  | $ 36.89 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Formula One Group | 2.25% Exchangeable Senior Debentures due 2046 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 2.25% |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.25% |  |  |  |  |  |  |  |  |  |  |  |  | 2.25% |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 445,000,000 |  | 
| Debt instrument, face amount per debenture |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extraordinary additional distribution |  |  |  |  |  |  |  | 229,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extraordinary additional distribution amount per debenture |  |  |  |  |  |  |  | $ 514.1295 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Formula One Group | AT&T | 2.25% Exchangeable Senior Debentures due 2046 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Shares underlying the debentures | shares |  | 6,110,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Losses on extinguishment of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (83,000,000) | $ (40,000,000) | $ (57,000,000) |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Securities basket conversion ratio from shares of Liberty Media Corporation common stock |  | 1.0163 |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.0163 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | 1.375% Cash Convertible Senior Notes due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 1.375% |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | 2.25% Exchangeable Senior Debentures due 2046 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 2.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | 2.125% Exchangeable Senior Debentures Due 2048 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) | 2.125% | 2.125% |  |  |  |  |  |  | 2.125% |  |  |  |  |  |  | 2.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extraordinary additional distribution | $ 13,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extraordinary additional distribution amount per debenture | $ 31.1731 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | 2.25% Exchangeable Senior Debentures due 2048 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 2.25% |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.25% |  |  |  |  |  |  | 2.25% |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | 2.75% Exchangeable Senior Debentures Due 2049 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) | 2.75% | 2.75% |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  | $ 604,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extraordinary additional distribution | $ 18,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extraordinary additional distribution amount per debenture | $ 29.0057 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | 0.5% Exchangeable Senior Debentures due 2050 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM Holdings Margin Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  | $ 125,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Effective interest rate |  | 2.22% |  | 2.30% |  |  |  |  |  |  |  |  |  |  |  | 2.22% | 2.30% | 3.99% |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument, unused borrowing capacity, fee, percent |  |  |  | 0.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Undrawn commitment fee |  |  | 0.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM Holdings Margin Loan | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument, Description of Variable Rate Basis |  |  | LIBOR | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument, Basis Spread on Variable Rate |  |  | 2.00% | 2.05% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM Holdings Margin Loan | Term loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  | $ 875,000,000 | $ 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM Holdings Margin Loan | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Line of Credit Facility, Remaining Borrowing Capacity |  | $ 875,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 875,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Maximum borrowing capacity |  |  | $ 875,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM Holdings Margin Loan | Delayed Draw Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  | $ 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | $ 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM 4.0% Senior Notes Due 2028 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% |  |  |  |  | 4.00% |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,000,000,000.0 |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius Xm 4.625% Senior Notes Due 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 4.625% |  |  |  |  |  |  |  |  |  |  | 4.625% |  |  | 4.625% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extinguishment of Debt, Amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,541,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM 5.375% Senior Notes due 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 5.375% |  |  |  |  |  |  |  |  |  | 5.375% |  |  |  | 5.375% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extinguishment of Debt, Amount |  |  |  |  |  |  |  |  |  |  |  | $ 1,034,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius Xm 5.50% Senior Notes Due 2029 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 5.50% |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.50% |  |  |  |  |  |  |  |  | 5.50% |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,250,000,000 |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM 3.875% Senior Notes due 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 3.875% |  |  |  |  |  |  |  |  |  |  | 3.875% |  |  | 3.875% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Extinguishment of Debt, Amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,019,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM 5.00% Senior Notes due 2027 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  | 
| Liberty SiriusXM Group | Pandora 1.75% Convertible Senior Notes due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 1.75% |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.75% |  |  |  |  |  |  |  |  |  | 1.75% |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 193,000,000 |  |  |  |  | 
| Debt Instrument, Convertible, Conversion Ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 153.7797 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Conversion amount |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument, unused borrowing capacity, fee, percent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Line of Credit Facility, Remaining Borrowing Capacity |  | 1,749,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,749,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Maximum borrowing capacity |  | $ 1,750,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,750,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM credit facility | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument, Description of Variable Rate Basis |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM 4.125% Senior Notes Due 2030 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 4.125% |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.125% |  |  |  |  |  | 4.125% |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM 3.125% Senior Notes Due 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 3.125% |  |  |  |  |  |  |  |  |  |  | 3.125% |  |  | 3.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM 3.875% Senior Notes Due 2031 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument interest rate (as a percent) |  | 3.875% |  |  |  |  |  |  |  |  |  |  | 3.875% |  |  | 3.875% |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Principal amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM Holdings | 2.125% Exchangeable Senior Debentures Due 2048 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Shares underlying the debentures | shares |  |  |  |  |  |  |  |  | 49,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Conversion price for exchangeable debt | $ / shares |  |  |  |  |  |  |  |  | $ 8.02 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument redemption price percentage |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM Holdings | 2.75% Exchangeable Senior Debentures Due 2049 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Shares underlying the debentures | shares |  |  |  |  |  | 70,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Conversion price for exchangeable debt | $ / shares |  |  |  |  |  | $ 8.62 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt instrument redemption price percentage |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Sirius XM Holdings | Sirius XM Holdings Margin Loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Share value |  | $ 6,350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Shares | shares |  | 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Pandora | Sirius XM credit facility | Letter of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Reduction in future borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | 1.375% Convertible Notes Bond Hedge Transaction | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Forward contract, number of underlying shares | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21,429,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Liberty SiriusXM Group | Warrant transaction | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Class of Warrant or Right, Outstanding | shares |  | 21,429,600 |  |  |  |  |  |  |  |  |  |  |  |  |  | 21,429,600 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Braves Group | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Securities basket conversion ratio from shares of Liberty Media Corporation common stock |  | 0.1087 |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.1087 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Braves Group | 1.375% Convertible Notes Bond Hedge Transaction | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Forward contract, number of underlying shares | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,292,037 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Braves Group | Warrant transaction | Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Debt Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 
| Class of Warrant or Right, Outstanding | shares |  | 2,292,037 |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,292,037 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |