|
Fair Value Measurements (Summary Of The Balances Company Has Elected To Account For At Fair Value) (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Fair Value Disclosures [Abstract] | ||
| Other investments | $ 806,782 | $ 748,984 |
| Other assets | $ 21,580 | $ 19,628 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of assets categorized as other which are not in and of themselves material enough to require separate disclosure. No definition available.
|
| X | ||||||||||
|
- Definition
Other investments not otherwise specified in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|