Investments In Available-For-Sale Securities And Other Cost Investments (Available-for-sale Securities, Including Fair Value Option Securities Separately Aggregated, and Other Cost Investments) (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2014
|
Dec. 31, 2013
|
Mar. 31, 2014
Other Investments [Member]
|
Dec. 31, 2013
Other Investments [Member]
|
Mar. 31, 2014
AFS and cost method investments
|
Dec. 31, 2013
AFS and cost method investments
|
Mar. 31, 2014
Live Nation
Debt Securities
|
Dec. 31, 2013
Live Nation
Debt Securities
|
Jun. 30, 2014
Subsequent Event
Barnes & Noble, Inc.
|
May 01, 2014
Subsequent Event
Barnes & Noble, Inc.
|
Mar. 31, 2014
Fair Value Option Securities
|
Dec. 31, 2013
Fair Value Option Securities
|
Mar. 31, 2014
Fair Value Option Securities
Time Warner Inc
Equity Securities
|
Dec. 31, 2013
Fair Value Option Securities
Time Warner Inc
Equity Securities
|
Mar. 31, 2014
Fair Value Option Securities
Time Warner Cable Inc
Equity Securities
|
Dec. 31, 2013
Fair Value Option Securities
Time Warner Cable Inc
Equity Securities
|
Mar. 31, 2014
Fair Value Option Securities
Viacom, Inc.
Equity Securities
|
Dec. 31, 2013
Fair Value Option Securities
Viacom, Inc.
Equity Securities
|
Mar. 31, 2014
Fair Value Option Securities
Barnes & Noble, Inc.
Equity Securities
|
Dec. 31, 2013
Fair Value Option Securities
Barnes & Noble, Inc.
Equity Securities
|
Mar. 31, 2014
Fair Value Option Securities
Other AFS Equity Securities
Equity Securities
|
Dec. 31, 2013
Fair Value Option Securities
Other AFS Equity Securities
Equity Securities
|
Mar. 31, 2014
Fair Value Option Securities
Other AFS Debt Securities
Debt Securities
|
Dec. 31, 2013
Fair Value Option Securities
Other AFS Debt Securities
Debt Securities
|
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Schedule of Investments [Line Items] | ||||||||||||||||||||||||||||||||||||
Investments in available-for-sale securities and other cost investments | $ 1,299 | $ 1,324 | $ 39 | $ 47 | $ 63 | $ 71 | $ 24 | $ 24 | $ 1,236 | $ 1,253 | $ 278 | [1] | $ 297 | [1] | $ 324 | [1] | $ 320 | [1] | $ 309 | [1] | $ 317 | [1] | $ 259 | [2] | $ 255 | [2] | $ 40 | $ 37 | $ 26 | $ 27 | ||||||
Sale of stock, ownership percentage of cost investment after transaction | 2.00% | |||||||||||||||||||||||||||||||||||
Percentage of shares sold | 90.00% | |||||||||||||||||||||||||||||||||||
Proceeds from sale of AFS | $ 250 | |||||||||||||||||||||||||||||||||||
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