Unaudited Condensed Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Balance Sheet Parenthetical Disclosure Assets
Fixed maturities, trading securities, amortized cost	$ 13,984,225	$ 12,394,797
Short-term investments, trading securities, amortized cost	216,881	49,132
Equities, trading securities, cost	880,222	942,745
Funds held - directly managed, cost	1,362,997	1,751,276
Balance Sheet Parenthetical Disclosures Equity
Common shares, par value	$ 1	$ 1
Common shares, shares issued	84,569,310	84,033,089
Other accumulated comprehensive loss, tax	5,838	4,872
Common shares held in treasury, shares	16,831,534	14,046,895
Preferred shares, par value	$ 1	$ 1
Preferred shares, shares issued	35,750,000	20,800,000
Preferred shares, shares outstanding	35,750,000	20,800,000
Aggregate liquidation value	$ 893,750	$ 520,000

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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