Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Debt Excluding Intergroup Debt) (Details)

v2.4.0.6
Long-Term Debt (Debt Excluding Intergroup Debt) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Debt Instrument, Face Amount $ 2,201  
Long-term Debt 2,419 0
Long-term Debt, current maturities (4) 0
Long-term debt 2,415 0
Sirius XM 8.75% Senior Notes due 2015 [Member]
   
Debt Instrument, Face Amount 650  
Long-term Debt 735 0
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
   
Debt Instrument, Face Amount 491  
Long-term Debt 543 0
Sirius XM 7.625% Senior Notes due 2018 [Member]
   
Debt Instrument, Face Amount 650  
Long-term Debt 723 0
Other Debt [Member]
   
Debt Instrument, Face Amount 10  
Long-term Debt 10 0
Sirius XM 5.25% Senior Notes due 2022 [Member]
   
Debt Instrument, Face Amount 400  
Long-term Debt 408 0
Sirius XM credit facility [Member]
   
Debt Instrument, Face Amount 0  
Long-term Debt $ 0 $ 0