Consolidated Balance Sheet (Unaudited) (Parenthetical) (USD $) In Millions, except Share data	Jun. 30, 2011	Dec. 31, 2010
Investments:
Fixed maturities, available for sale at amortized cost	$ 19,417	$ 18,490
Equity securities, at cost	$ 549	$ 458
Shareholders' equity:
Common Stock, par value	$ 0	$ 0
Common Stock, shares authorized	200,000,000	200,000,000
Common Stock, shares outstanding	101,020,235	105,168,366

For an unclassified balance sheet, this item represents investments in common and preferred stocks and other forms of securities that provide ownership interests in a corporation. This disclosure reflects the value of the equity securities at cost, adjusted for other than temporary impairments, where applicable.

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Issuance value per share of no-par value common stock; generally not indicative of the fair market value per share.

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Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

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