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Schedule II (Condensed Balance Sheets) (Details) (USD $) In Millions, except Share data, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2008
--- | --- | --- | --- | ---
Cash and cash equivalents | $ 633 | $ 1,130 | $ 803 | $ 2,280
Total assets | 26,873 | 32,279 | 25,701 |
Total liabilities | 25,150 | 29,433 |  |
Preferred stock, par value $1 per share; authorized shares-10,000,000; issued and outstanding shares-none |  |  |  |
Common stock, par value $1 per share; authorized shares-400,000,000; issued shares-274,896,162 and 274,719,578 | 275 | 275 |  |
Additional paid-in capital | 3,072 | 3,064 |  |
Retained earnings | 805 | 2,124 |  |
Accumulated other comprehensive loss, net of deferred tax of $134 and $222 | (176) | (406) |  |
Treasury stock, at cost-81,752,966 and 74,973,978 shares | (2,276) | (2,225) |  |
Total shareholders' equity | 1,700 | 2,832 |  |
Total liabilities and shareholders' equity | 26,873 | 32,279 |  |
Short-term investments held as available-for-sale, amortized cost | 9,025 | 12,822 |  |
Preferred stock, par value | $ 1 | $ 1 |  |
Preferred stock, authorized shares | 10,000,000 | 10,000,000 |  |
Preferred stock, issued | 0 | 0 |  |
Preferred stock, outstanding | 0 | 0 |  |
Common stock, par value | $ 1 | $ 1 |  |
Common stock, authorized shares | 400,000,000 | 400,000,000 |  |
Common stock, issued shares | 274,896,162 | 274,719,578 |  |
Accumulated other comprehensive loss, net of deferred tax | 105 | 229 |  |
Treasury stock, at cost-81,752,966 and 74,973,978 shares | (81,752,966) | (74,973,978) |  |
Parent Company [Member] |  |  |  |
Fixed-maturity securities held as available-for-sale, at fair value (amortized cost $1,989 and $2,988) | 1,809 | 2,436 |  |
Investments held-to-maturity, at amortized cost (fair value $0 and $55) |  | 59 |  |
Fixed-maturity securities at fair value | 96 | 18 |  |
Investments pledged as collateral, at fair value (amortized cost $642 and $548) | 543 | 552 |  |
Short-term investments held as available-for-sale, at fair value (amortized cost $648 and $992) | 643 | 985 |  |
Other investments | 83 | 183 |  |
Total | 3,174 | 4,233 |  |
Cash and cash equivalents | 132 | 83 | 149 | 1,123
Accrued investment income | 20 | 23 |  |
Investment in wholly-owned subsidiaries | 3,410 | 4,640 |  |
Affiliate loan receivable |  | 128 |  |
Derivative assets | 2 | 4 |  |
Current income taxes | 31 | 156 |  |
Deferred income taxes, net | 114 | 134 |  |
Receivable for investments sold | 14 | 8 |  |
Other assets | 70 | 41 |  |
Total assets | 6,967 | 9,450 |  |
Investment agreements | 1,523 | 1,940 |  |
Medium-term notes | 50 | 45 |  |
Securities sold under agreements to repurchase | 669 | 1,502 |  |
Short-term debt |  | 65 |  |
Long-term debt | 900 | 905 |  |
Affiliate loans payable | 1,688 | 1,776 |  |
Derivative liabilities | 356 | 241 |  |
Other liabilities | 81 | 111 |  |
Total liabilities | 5,267 | 6,585 |  |
Preferred stock, par value $1 per share; authorized shares-10,000,000; issued and outstanding shares-none |  |  |  |
Common stock, par value $1 per share; authorized shares-400,000,000; issued shares-274,896,162 and 274,719,578 | 275 | 275 |  |
Additional paid-in capital | 3,072 | 3,064 |  |
Retained earnings | 805 | 2,209 |  |
Accumulated other comprehensive loss, net of deferred tax of $134 and $222 | (176) | (458) |  |
Treasury stock, at cost-81,752,966 and 74,973,978 shares | (2,276) | (2,225) |  |
Total shareholders' equity | 1,700 | 2,865 |  |
Total liabilities and shareholders' equity | 6,967 | 9,450 |  |
Fixed-maturity securities held as available-for-sale, amortized cost | 1,989 | 2,988 |  |
Investments held-to-maturity, fair value | 0 | 55 |  |
Investments pledged as collateral, amortized cost | 623 | 548 |  |
Short-term investments held as available-for-sale, amortized cost | 648 | 992 |  |
Preferred stock, par value | $ 1 | $ 1 |  |
Preferred stock, authorized shares | 10,000,000 | 10,000,000 |  |
Preferred stock, issued | 0 | 0 |  |
Preferred stock, outstanding | 0 | 0 |  |
Common stock, par value | $ 1 | $ 1 |  |
Common stock, authorized shares | 400,000,000 | 400,000,000 |  |
Common stock, issued shares | 274,896,162 | 274,719,578 |  |
Accumulated other comprehensive loss, net of deferred tax | $ 134 | $ 222 |  |
Treasury stock, at cost-81,752,966 and 74,973,978 shares | 81,752,966 | 74,973,978 |  |

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