Quarterly report pursuant to Section 13 or 15(d)

Basis Of Presentation (Narrative) (Details)

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Basis Of Presentation (Narrative) (Details) (USD $)
 3 Months Ended 6 Months Ended 12 Months Ended 1 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Mar. 31, 2013
Dec. 31, 2012
Dec. 31, 2010
Dec. 31, 2013
Lease Agreements [Member]
Jan. 18, 2013
Noncontrolling Interest [Member]
Jan. 18, 2013
SIRIUS XM [Member]
Jun. 30, 2013
SIRIUS XM [Member]
Jun. 30, 2013
SIRIUS XM [Member]
Jun. 30, 2012
SIRIUS XM [Member]
Jan. 18, 2013
FCC licences [Member]
SIRIUS XM [Member]
Jun. 30, 2013
Pro Forma [Member]
Jun. 30, 2013
Pro Forma [Member]
Dec. 31, 2012
Pro Forma [Member]
SIRIUS XM [Member]
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination                   $ 10,372,000,000              
Business Acquisition, Cost of Acquired Entity, Other Noncash Consideration                   253,000,000              
Revenue, Net 1,078,000,000 135,000,000 1,867,000,000 170,000,000               1,667,000,000 0   970,000,000 1,808,000,000  
Assets, Current 2,365,000,000   2,365,000,000     2,211,000,000                     4,039,000,000
ownership percentage acquired                   50.00%              
Related Party Costs 6,000,000 1,000,000 9,000,000 3,000,000                          
Related Party Transaction, Amounts of Transaction               3,000,000                  
Purchase of shares in equity method investee                   50,000,000              
Business Acquisition, Cost of Acquired Entity, Cash Paid                   161,000,000              
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value                 10,286,000,000 10,841,000,000              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net                   21,466,000,000              
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain                     7,500,000,000            
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value                   10,215,000,000              
Preferred Stock, Par or Stated Value Per Share $ 0.01   $ 0.01     $ 0.01       $ 0.001              
Convertible Preferred Stock, Shares Issued upon Conversion                   1,293,509,076              
Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents                   569,000,000              
Business Acquisition, Purchase Price Allocation, Current Assets, Receivables                   210,000,000              
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment                   1,714,000,000              
Business Acquisition, Purchase Price Allocation, Goodwill Amount                   14,021,000,000              
Business Acquisition, Purchase Price Allocation, Intangible Assets Not Amortizable                   930,000,000       8,600,000,000      
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets                   930,000,000              
Business Acquisition, Purchase Price Allocation, Current Assets, Prepaid Expense and Other Assets                   480,000,000              
Business Acquisition, Purchase Price Allocation, Noncurrent Liabilities, Long-term Debt                   (2,490,000,000)              
Business Acquisition, Purchase Price Allocation, Current Liabilities, Deferred Revenue                   (1,565,000,000)              
Business Acquisition, Purchase Price Allocation, Other Liabilities                   (1,033,000,000)              
Business Acquisition, Purchase Price Allocation, Deferred Taxes Asset (Liability), Net, Noncurrent                   (900,000,000)              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangibles                   21,466,000,000              
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners                   50.00%              
Equity Method Investments 3,415,000,000   3,415,000,000     3,341,000,000           278,000,000         859,000,000
Property, Plant and Equipment, Net 1,773,000,000   1,773,000,000     157,000,000                     1,871,000,000
Indefinite Lived Intangible Assets Total 23,895,000,000   23,895,000,000     344,000,000                     23,895,000,000
Finite-Lived Intangible Assets, Net 987,000,000   987,000,000   987,000,000 108,000,000 108,000,000                   1,036,000,000
Other Assets, Noncurrent 179,000,000   179,000,000     32,000,000                     1,980,000,000
Assets 33,884,000,000   33,884,000,000     8,325,000,000           29,455,000,000         33,680,000,000
Long-term Debt 4,363,000,000   4,363,000,000     0                     2,486,000,000
Deferred Tax Liabilities, Net                                 2,936,000,000
Other Liabilities                                 3,894,000,000
Stockholders' Equity Attributable to Noncontrolling Interest 9,937,000,000   9,937,000,000     (8,000,000)                     10,833,000,000
Operating Income (Loss) 236,000,000 2,000,000 396,000,000 (30,000,000)                     205,000,000 351,000,000  
Interest Expense (28,000,000) (2,000,000) (39,000,000) (5,000,000)                     (49,000,000) (106,000,000)  
Income (Loss) from Equity Method Investments (21,000,000) 1,281,000,000 (4,000,000) 1,293,000,000                     5,000,000 (16,000,000)  
Net Income (Loss) Attributable to Noncontrolling Interest 62,000,000 1,000,000 110,000,000 2,000,000                     1,584,000,000 1,629,000,000  
Net Income (Loss) Attributable to Parent 96,000,000 937,000,000 8,158,000,000 1,087,000,000                     1,636,000,000 1,752,000,000  
Income (Loss) from Continuing Operations, Per Basic Share                             $ 13.75 $ 14.60  
Income (Loss) from Continuing Operations, Per Diluted Share                             $ 13.30 $ 14.13  
Stockholders' Equity Attributable to Parent $ 14,376,000,000   $ 14,376,000,000     $ 6,440,000,000                     $ 13,531,000,000