Investments In Available-For-Sale Securities And Other Cost Investments (Investments In Available-For-Sale Securities And Other Cost Investments) (Details) (USD $)
In Millions, unless otherwise specified |
9 Months Ended | 3 Months Ended | 9 Months Ended | 9 Months Ended | ||||||||||||||||||||||
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Sep. 30, 2013
|
Sep. 30, 2012
|
Dec. 31, 2012
|
Jun. 30, 2013
Time Warner Inc [Member]
|
Jun. 30, 2013
AOL Inc [Member]
|
Jun. 30, 2013
Time Warner [Member]
|
Sep. 30, 2013
Interactive Group [Member]
|
Sep. 30, 2012
Interactive Group [Member]
|
Dec. 31, 2012
Interactive Group [Member]
|
Sep. 30, 2013
Ventures Group [Member]
|
Sep. 30, 2012
Ventures Group [Member]
|
Dec. 31, 2012
Ventures Group [Member]
|
Sep. 30, 2013
Ventures Group [Member]
Time Warner Inc [Member]
|
Dec. 31, 2012
Ventures Group [Member]
Time Warner Inc [Member]
|
Sep. 30, 2013
Ventures Group [Member]
Time Warner Cable Inc [Member]
|
Dec. 31, 2012
Ventures Group [Member]
Time Warner Cable Inc [Member]
|
Sep. 30, 2013
Ventures Group [Member]
AOL Inc [Member]
|
Dec. 31, 2012
Ventures Group [Member]
AOL Inc [Member]
|
Sep. 30, 2013
Ventures Group [Member]
TripAdvisor AFS Securities [Member]
|
Dec. 31, 2012
Ventures Group [Member]
TripAdvisor AFS Securities [Member]
|
Sep. 30, 2013
Ventures Group [Member]
Other Investments [Member]
|
Dec. 31, 2012
Ventures Group [Member]
Other Investments [Member]
|
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Sale of Available for Sale Securities, Shares | 17.4 | 2.0 | ||||||||||||||||||||||||
Cash proceeds from dispositions | $ 1,136 | $ 348 | $ 1,099 | $ 0 | $ 0 | $ 1,136 | $ 348 | |||||||||||||||||||
Cost Method Investments | 4 | 4 | ||||||||||||||||||||||||
Investments in available-for-sale securities and other cost investments | $ 1,343 | $ 1,819 | $ 4 | $ 4 | $ 1,339 | $ 1,815 | $ 289 | [1] | $ 1,042 | $ 610 | $ 531 | $ 0 | [1] | $ 59 | $ 164 | $ 99 | $ 276 | $ 84 | ||||||||
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