Realized and Unrealized Investment Gains (Losses) (Change in Unrealized Gains (Losses) of Available For Sales Securities) (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Total change in unrealized gains (losses) before income taxes and noncontrolling interests	$ 39,515	$ 187,631	$ 121,068	$ 355,481
Income tax (expense) benefit	(14,268)	(65,666)	(42,893)	(124,229)
Noncontrolling interests	1	(3)	(11)	(11)
Total change in unrealized gains (losses)	25,248	121,962	78,164	231,241
Fixed Maturities Securites [Member]
Total change in unrealized gains (losses) before income taxes and noncontrolling interests	115,933	163,180	187,851	341,502
Less Non-Credit Portion of OTTI Recognized In Other Comprehensive Income [Member]
Total change in unrealized gains (losses) before income taxes and noncontrolling interests	(1,300)	(826)	(1,956)	673
Equity Securities Available For Sale [Member]
Total change in unrealized gains (losses) before income taxes and noncontrolling interests	(65,861)	23,570	(59,760)	11,300
Investment Funds [Member]
Total change in unrealized gains (losses) before income taxes and noncontrolling interests	$ (9,257)	$ 1,707	$ (5,067)	$ 2,006

This item represents the tax effects occurring during the period which are related to the net unrealized gain (loss) resulting from changes in the fair [carrying] value during the period of available-for-sale securities. Such tax affects would have been charged or credited directly to other comprehensive income or to related components of shareholders' equity.

Gross appreciation or the gross loss in value of the total unsold securities, after tax, attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 30

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 38

-Subparagraph c(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

-Paragraph 29

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 45

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6921628&loc=SL4569643-111683

+ Details