Basis of Presentation (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
Dec. 31, 2020 |
|
| Basic of presentation | |||||
| Amount Of Deficit Reclassified To Retained Earnings | $ 166 | $ 166 | |||
| Liberty Media Corporation | |||||
| Basic of presentation | |||||
| Related Party Transaction, Amounts of Transaction | 3 | $ 2 | $ 6 | $ 5 | |
| Liberty Media Corporation | CEO | |||||
| Basic of presentation | |||||
| CEO compensation allocation percentage | 17.00% | ||||
| Liberty Media Corporation and Liberty Broadband Corporation | |||||
| Basic of presentation | |||||
| Tax sharing payable | $ 119 | $ 119 | $ 129 | ||