Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Long-Term Debt Long-Term Debt (Fair Value of Debt) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Sirius XM 8.75% Senior Notes due 2015
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Long-term Debt, Fair Value $ 686
Sirius XM 5.75% Senior Notes due 2021
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Long-term Debt, Fair Value 626
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Long-term Debt, Fair Value 872
Sirius XM 5.25% Senior Notes due 2022
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Long-term Debt, Fair Value 414
Sirius XM Senior Notes due 2020
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Long-term Debt, Fair Value 488
Sirius XM Senior Notes due 2023
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Long-term Debt, Fair Value $ 473