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Long-Term Debt (Narrative) (Details) (USD $)
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3 Months Ended | 12 Months Ended | 12 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | 10 Months Ended | 52 Months Ended | 3 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2013
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2013
Margin loan [Member]
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Dec. 31, 2012
Margin loan [Member]
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Dec. 31, 2013
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Dec. 31, 2012
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Dec. 31, 2013
Sirius XM 5.875% Senior Notes due 2020 [Member]
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Dec. 31, 2012
Sirius XM 5.875% Senior Notes due 2020 [Member]
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Dec. 31, 2013
Sirius XM 5.75% Senior Notes due 2021 [Member]
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Dec. 31, 2012
Sirius XM 5.75% Senior Notes due 2021 [Member]
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Dec. 31, 2013
Sirius XM 5.25% Senior Notes due 2022 [Member]
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Dec. 31, 2012
Sirius XM 5.25% Senior Notes due 2022 [Member]
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Dec. 31, 2013
Sirius XM 4.25% Senior Notes due 2020 [Member]
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Dec. 31, 2012
Sirius XM 4.25% Senior Notes due 2020 [Member]
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Dec. 31, 2013
Sirius XM 4.625% Senior Notes due 2023 [Member]
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Dec. 31, 2012
Sirius XM 4.625% Senior Notes due 2023 [Member]
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Dec. 31, 2013
Sirius XM credit facility [Member]
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Dec. 31, 2012
Sirius XM credit facility [Member]
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Dec. 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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Sep. 30, 2013
Sirius XM 5.875% Senior Notes due 2020 [Member]
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Dec. 31, 2013
Sirius XM 5.875% Senior Notes due 2020 [Member]
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Dec. 31, 2013
Sirius XM Senior Notes due 2020 [Member]
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Dec. 31, 2013
Sirius XM Senior Notes due 2020 [Member]
Senior Notes [Member]
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Dec. 31, 2013
Sirius XM credit facility [Member]
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Dec. 31, 2013
Sirius XM credit facility [Member]
Revolving Credit Facility [Member]
Sirius XM credit facility, unused fee percentage [Member]
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Dec. 31, 2013
Sirius XM 5.25% Senior Notes due 2022 [Member]
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Dec. 31, 2013
1.375% Cash Convertible Senior Notes due 2023 [Member]
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Oct. 17, 2013
1.375% Cash Convertible Senior Notes due 2023 [Member]
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Dec. 31, 2012
1.375% Cash Convertible Senior Notes due 2023 [Member]
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Dec. 31, 2013
Subsidiary Debt [Member]
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Dec. 31, 2012
Subsidiary Debt [Member]
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Dec. 31, 2013
$1 billion margin loan due 2014 [Member]
Revolving Credit Facility [Member]
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Jun. 30, 2013
$1 billion margin loan due 2014 [Member]
Revolving Credit Facility [Member]
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Dec. 31, 2013
$1 billion margin loan due 2014 [Member]
Revolving Credit Facility [Member]
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Dec. 31, 2013
$1 billion margin loan due 2014 [Member]
Term loan [Member]
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Jun. 30, 2013
$670 million margin loan due 2015 [Member]
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Jun. 30, 2013
$670 million margin loan due 2015 [Member]
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Dec. 31, 2013
$670 million margin loan due 2015 [Member]
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Jun. 30, 2013
$300 million margin loan due 2014 [Member]
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Dec. 31, 2013
$300 million margin loan due 2014 [Member]
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Dec. 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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Aug. 31, 2008
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Dec. 31, 2013
Sirius XM Senior Notes due 2023 [Member]
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Dec. 31, 2013
Sirius XM Senior Notes due 2023 [Member]
Senior Notes [Member]
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Jun. 30, 2013
Sirius XM Senior Notes due 2020 ans 2023 [Member]
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Sep. 30, 2013
Sirius XM 5.75% Senior Notes due 2021 [Member]
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Dec. 31, 2013
Sirius XM 5.75% Senior Notes due 2021 [Member]
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Dec. 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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Dec. 31, 2013
Common Class A [Member]
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Dec. 31, 2013
Common Class A [Member]
1.375% Cash Convertible Senior Notes due 2023 [Member]
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Oct. 17, 2013
Common Class A [Member]
1.375% Cash Convertible Senior Notes due 2023 [Member]
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Mar. 01, 2013
SIRIUS XM [Member]
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [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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Dec. 31, 2013
SIRIUS XM [Member]
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Nov. 30, 2012
SIRIUS XM [Member]
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Aug. 31, 2008
SIRIUS XM [Member]
Sirius XM 7% Exchangeable Senior Subordinated Notes due 2014 [Member]
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Dec. 31, 2013
1.375% Convertible Notes Bond Hedge Transaction [Member]
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Dec. 31, 2013
1.375% Convertible Notes Bond Hedge Transaction [Member]
Common Class A [Member]
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Dec. 31, 2013
SIRIUS XM [Member]
$1 billion margin loan due 2014 [Member]
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Dec. 31, 2013
Charter Communications [Member]
$670 million margin loan due 2015 [Member]
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Dec. 31, 2013
Live Nation [Member]
$1 billion margin loan due 2014 [Member]
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Dec. 31, 2013
Time Warner Inc [Member]
$1 billion margin loan due 2014 [Member]
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Dec. 31, 2013
Viacom, Inc. [Member]
$1 billion margin loan due 2014 [Member]
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Dec. 31, 2013
Time Warner Cable Inc [Member]
$1 billion margin loan due 2014 [Member]
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| Shares pledged as collateral under loan | 719,900,000 | 8,100,000 | 3,600,000 | 3,500,000 | 1,100,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-term Debt, Fair Value | $ 0 | $ 667,000,000 | $ 474,000,000 | $ 407,000,000 | $ 961,000,000 | $ 451,000,000 | $ 608,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Face Amount | 920,000,000 | 0 | 491,000,000 | 650,000,000 | 600,000,000 | 400,000,000 | 500,000,000 | 0 | 500,000,000 | 0 | 460,000,000 | 500,000,000 | 1,000,000,000 | 1,000,000,000 | 0 | 20,000,000 | 670,000,000 | 500,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 8.75% | 0.00% | 4.25% | 2.42% | 0.35% | 5.25% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Convertible, Conversion Ratio | 5.5882 | 543.1372 | 533.3333 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt instrument, face amount per debenture | 1,000 | 1,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt conversion, converted instrument, conversion rate | 581.3112 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Senior Notes, principal amount owned by Liberty | 150,000,000 | 11,000,000 | 50,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Convertible, Conversion Price | $ 178.95 | $ 1.875 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Payments for Derivative Instrument, Investing Activities | 299,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Warrants, Exercise Price | $ 255.64 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Proceeds from Issuance of Warrants | 170,000,000 | 170,000,000 | 0 | 0 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Proceeds from (Payments for) Other Financing Activities | 871,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Repayments of Long-term Debt | 2,779,000,000 | 750,000,000 | 0 | (200,000,000) | (250,000,000) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Proceeds from Issuance of Long-term Debt | 5,923,000,000 | 0 | 0 | 643,000,000 | 450,000,000 | 250,000,000 | 300,000,000 | 370,000,000 | 300,000,000 | 989,000,000 | 594,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Senior Notes, principal amount | 800,000,000 | 650,000,000 | 400,000,000 | 550,000,000 | 600,000,000 | 700,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Basis Spread on Variable Rate | 2.00% | 3.25% | 5.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Forward contract, number of underlying shares | 5,588,200 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-term Debt | 5,555,000,000 | 5,555,000,000 | 0 | 920,000,000 | 520,000,000 | 0 | 643,000,000 | 0 | 594,000,000 | 0 | 407,000,000 | 0 | 494,000,000 | 495,000,000 | 460,000,000 | 0 | 1,002,000,000 | 20,000,000 | 0 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-Term Debt, outstanding principal | 5,541,000,000 | 5,541,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line of Credit Facility, Maximum Borrowing Capacity | 1,250,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-term Debt, Maturities, Repayments of Principal in Year Two | 677,000,000 | 677,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-term Debt, Maturities, Repayments of Principal in Year Three | 4,000,000 | 4,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Long-term Debt, Maturities, Repayments of Principal in Year Four | 461,000,000 | 461,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line of Credit Facility, Remaining Borrowing Capacity | 790,000,000 | 750,000,000 | 750,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Incremental borrowing capacity | 1,000,000,000 | 1,000,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Financial Instruments, Owned and Pledged as Collateral, at Fair Value | 2,513,000,000 | 2,772,000,000 | 159,000,000 | 252,000,000 | 308,000,000 | 151,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Conversion, Converted Instrument, Amount | 48,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Conversion, Converted Instrument, Shares Issued | 28,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Repurchased Face Amount | 800,000,000 | 700,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Debt Instrument, Repurchase Amount | 928,000,000 | 798,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Gains (Losses) on Extinguishment of Debt | $ (21,000,000) | $ 0 | $ 0 | $ 14,000,000 | $ 4,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||