Annual report pursuant to Section 13 and 15(d)

Investments In Available-For-Sale Securities And Other Cost Investments (Details)

v3.3.1.900
Investments In Available-For-Sale Securities And Other Cost Investments (Details) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments $ 533 $ 816
Other Investments [Member]    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 59 47
AFS and cost method investments    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments $ 83 71
Viacom, Inc.    
Schedule of Investments [Line Items]    
Available for sale securities number of shares sold 1.8  
Proceeds from Sale of Available-for-sale Securities $ 122  
Live Nation | Debt Securities    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 24 24
Fair Value Option Securities    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 450 745
Fair Value Option Securities | Time Warner Inc    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 275 363
Fair Value Option Securities | Viacom, Inc.    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 76 273
Fair Value Option Securities | Other AFS Equity Securities | Equity Securities    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments 74 82
Fair Value Option Securities | Other AFS Debt Securities | Debt Securities    
Schedule of Investments [Line Items]    
Investments in available-for-sale securities and other cost investments $ 25 $ 27