Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Fair Value of Debt (Details)

v3.20.2
Long-Term Debt - Fair Value of Debt (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Long-term debt, measured at fair value $ 3,091 $ 3,678
Liberty SiriusXM Group | Sirius XM 3.875% Senior Notes due 2022    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 3.875%  
Long-term debt, measured at fair value $ 1,001  
Liberty SiriusXM Group | Sirius XM 4.625% Senior Notes Due 2023    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 4.625%  
Long-term debt, measured at fair value $ 504  
Liberty SiriusXM Group | Sirius Xm 4.625% Senior Notes Due 2024    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 4.625%  
Long-term debt, measured at fair value $ 1,536  
Liberty SiriusXM Group | Sirius XM 5.375% Senior Notes Due 2025    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 5.375%  
Long-term debt, measured at fair value $ 1,027  
Liberty SiriusXM Group | Sirius XM 5.375% Senior Notes due 2026    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 5.375%  
Long-term debt, measured at fair value $ 1,031  
Liberty SiriusXM Group | Sirius XM 5.0% Senior Notes due 2027    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 5.00%  
Long-term debt, measured at fair value $ 1,538  
Liberty SiriusXM Group | Sirius Xm 5.50% Senior Notes Due 2029    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 5.50%  
Long-term debt, measured at fair value $ 1,320  
Liberty SiriusXM Group | Sirius XM 4.125% Senior Notes Due 2030    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 4.125%  
Long-term debt, measured at fair value $ 1,479  
Liberty SiriusXM Group | Pandora 1.75% Convertible Senior Notes due 2020    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 1.75%  
Long-term debt, measured at fair value $ 1  
Liberty SiriusXM Group | Pandora 1.75% Convertible Senior Notes due 2023    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Debt instrument interest rate (as a percent) 1.75%  
Long-term debt, measured at fair value $ 217