Annual report pursuant to Section 13 and 15(d)

Investments In Affiliates Accounted For Using The Equity Method (SIRIUS XM Consolidated Balance Sheets) (Details)

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Investments In Affiliates Accounted For Using The Equity Method (SIRIUS XM Consolidated Balance Sheets) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Current assets $ 2,211 $ 3,860    
Property and equipment, net 207 215    
Goodwill 332 332 332  
Deferred tax assets 114 196    
Other assets 240 238    
Total assets 8,325 7,719    
Current liabilities 385 1,230    
Deferred income taxes 802 409    
Long-term debt 536 541    
Other Liabilities, Noncurrent 131 251    
Noncontrolling interests in equity of subsidiaries (8) (10)    
Equity 6,432 5,249 5,000 3,310
Total liabilities and equity 8,325 7,719    
SIRIUS XM [Member]
        
Current assets 1,828 1,277    
Property and equipment, net 1,572 1,674    
Goodwill 1,815 1,835    
Deferred tax assets 1,219 0    
Intangible assets 2,520 2,574    
Other assets 101 136    
Total assets 9,055 7,496    
Current liabilities 2,315 2,248    
Deferred income taxes 0 1,011    
Long-term debt 2,222 2,684    
Other Liabilities, Noncurrent 478 849    
Equity 4,040 704    
Total liabilities and equity $ 9,055 $ 7,496