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Long-Term Debt (Narrative) (Details) (USD $)
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3 Months Ended | 11 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2013
Sirius XM credit facility [Member]
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Mar. 31, 2013
Starz Bank Facility [Member]
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Dec. 31, 2012
Starz Bank Facility [Member]
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Mar. 31, 2013
Sirius XM 8.75% Senior Notes due 2015 [Member]
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Jan. 18, 2013
Sirius XM 8.75% Senior Notes due 2015 [Member]
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Mar. 31, 2013
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Jan. 18, 2013
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Mar. 31, 2013
Sirius XM 7.625% Senior Notes due 2018 [Member]
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Jan. 18, 2013
Sirius XM 7.625% Senior Notes due 2018 [Member]
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Mar. 31, 2013
Sirius XM 5.25% Senior Notes due 2022 [Member]
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Jun. 30, 2013
Sirius XM Senior Notes due 2020 [Member]
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Jun. 30, 2013
Sirius XM Senior Notes due 2023 [Member]
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Jun. 30, 2013
Sirius XM Senior Notes due 2020 ans 2023 [Member]
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Mar. 31, 2013
SIRIUS XM [Member]
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Jun. 30, 2012
SIRIUS XM [Member]
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Dec. 31, 2013
SIRIUS XM [Member]
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Sep. 30, 2012
SIRIUS XM [Member]
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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| Senior Notes, principal amount | $ 800,000,000 | $ 550,000,000 | $ 700,000,000 | $ 400,000,000 | $ 500,000,000 | $ 500,000,000 | |||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 0.30% | 8.75% | 0.00% | 0.00% | 5.25% | 4.25% | 0.00% | ||||||||||
| Debt Instrument, Convertible, Conversion Ratio | 533.3333 | 543.1372 | |||||||||||||||
| Debt Conversion, Converted Instrument, Amount | 48,000,000 | ||||||||||||||||
| Debt Conversion, Converted Instrument, Shares Issued | 28,000,000 | ||||||||||||||||
| Debt instrument, face amount per debenture | 1,000 | ||||||||||||||||
| conversion price for exchangeable debt | $ 1.875 | ||||||||||||||||
| Senior Notes, principal amount owned by Liberty | 150,000,000 | 11,000,000 | 50,000,000 | ||||||||||||||
| Debt Conversion, Converted Instrument, Rate | 581.3112 | ||||||||||||||||
| Line of Credit Facility, Maximum Borrowing Capacity | 1,250,000,000 | ||||||||||||||||
| Line of Credit Facility, Remaining Borrowing Capacity | 1,250,000,000 | ||||||||||||||||
| Long-term Debt, Fair Value | 724,000,000 | 870,000,000 | 719,000,000 | 409,000,000 | |||||||||||||
| Senior Notes | $ 1,000,000,000 | ||||||||||||||||