| Goodwill and Other Intangible Assets (Details) (USD $) | 12 Months Ended | |||||
|---|---|---|---|---|---|---|
| Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | ||||
| Goodwill [Line Items] | ||||||
| Indefinite-Lived License Agreements | $ 8,600,000,000 | $ 0 | ||||
| Amortization of Intangible Assets | 115,000,000 | 19,000,000 | 29,000,000 | |||
| Finite-Lived Intangible Assets, Net | 1,200,000,000 | 108,000,000 | ||||
| Goodwill | 14,365,000,000 | 200,000,000 | 200,000,000 | |||
| Goodwill, Other Changes | 0 | |||||
| SIRIUS XM [Member] | ||||||
| Goodwill [Line Items] | ||||||
| Indefinite-Lived License Agreements | 8,600,000,000 | |||||
| Indefinite-Lived Trade Names | 900,000,000 | |||||
| Goodwill | 14,165,000,000 | |||||
| Goodwill, Acquired During Period | 14,165,000,000 | [1] | ||||
| Corporate And Other [Member] | ||||||
| Goodwill [Line Items] | ||||||
| Goodwill | 200,000,000 | 200,000,000 | 200,000,000 | |||
| Goodwill, Acquired During Period | 0 | |||||
| Goodwill, Other Changes | 0 | |||||
| ANLBC [Member] | ||||||
| Goodwill [Line Items] | ||||||
| Indefinite-Lived Franchise Rights | 143,000,000 | |||||
| Licensing Agreements [Member] | ||||||
| Goodwill [Line Items] | ||||||
| Finite-Lived Intangible Asset, Useful Life | 15 years | |||||
| Finite-Lived Intangible Assets, Gross | 316,000,000 | 0 | ||||
| Finite-Lived Intangible Assets, Accumulated Amortization | (22,000,000) | 0 | ||||
| Finite-Lived Intangible Assets, Net | 294,000,000 | 0 | ||||
| Other Credit Derivatives [Member] | ||||||
| Goodwill [Line Items] | ||||||
| Finite-Lived Intangible Assets, Gross | 433,000,000 | 515,000,000 | ||||
| Finite-Lived Intangible Assets, Accumulated Amortization | 300,000,000 | 435,000,000 | ||||
| Finite-Lived Intangible Assets, Net | 133,000,000 | 80,000,000 | ||||
| Customer Relationships [Member] | ||||||
| Goodwill [Line Items] | ||||||
| Finite-Lived Intangible Assets, Gross | 838,000,000 | 51,000,000 | ||||
| Finite-Lived Intangible Assets, Accumulated Amortization | 65,000,000 | 23,000,000 | ||||
| Finite-Lived Intangible Assets, Net | 773,000,000 | 28,000,000 | ||||
| Other Intangible Assets [Member] | ||||||
| Goodwill [Line Items] | ||||||
| Finite-Lived Intangible Assets, Gross | 1,587,000,000 | 566,000,000 | ||||
| Finite-Lived Intangible Assets, Accumulated Amortization | 387,000,000 | 458,000,000 | ||||
| Finite-Lived Intangible Assets, Net | $ 1,200,000,000 | $ 108,000,000 | ||||
| Minimum [Member] | Customer Relationships [Member] | ||||||
| Goodwill [Line Items] | ||||||
| Finite-Lived Intangible Asset, Useful Life | 10 years | |||||
| 
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