|
Investments In Available-For-Sale Securities And Other Cost Investments (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
12 Months Ended | 3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
Feb. 25, 2010
|
Feb. 26, 2008
|
Jun. 30, 2011
Live Nation [Member]
|
Sep. 30, 2011
Barnes & Noble, Inc. [Member]
|
Sep. 30, 2012
Barnes & Noble, Inc. [Member]
|
Dec. 31, 2011
Barnes & Noble, Inc. [Member]
|
|
| Investment Owned, Balance, Shares | 204,000 | 512,600,000 | |||||||
| Ownership Interest In Investee | 14.60% | 41.00% | 17.00% | ||||||
| The total value of Non-strategic Securities | $ 1,435 | $ 3,768 | |||||||
| Payments to Acquire Investments | $ 350 | $ 405 | $ 726 | $ 58 | $ 204 | ||||
| Preferred Stock, Dividend Rate, Percentage | 7.75% | ||||||||
| X | ||||||||||
|
- Definition
Ownership interest in investee No definition available.
|
| X | ||||||||||
|
- Definition
The total value of Non-Strategic Securities. No definition available.
|
| X | ||||||||||
|
- Definition
Balance held at close of period in number of shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The cash outflow associated with the purchase of all investments (debt, security, other) during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The percentage rate used to calculate dividend payments on preferred stock. No definition available.
|