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Schedule II - Condensed Financial Information Of The Registrant (Condensed Balance Sheets) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Condensed Financial Statements, Captions [Line Items] |  |  |
Fixed maturities - available for sale, at fair value (amortized cost: 2022, $24,191; 2021, $22,064, credit allowances: 2022, $(54); 2021, $(30)) | $ 22,236 | $ 22,308 |
Other invested assets | 4,085 | 2,920 |
Cash | 1,398 | 1,441 |
Accrued investment income | 217 | 149 |
Other assets | 930 | 757 |
TOTAL ASSETS | 39,966 | 38,185 |
Other liabilities | 526 | 540 |
Total liabilities | 31,525 | 28,046 |
Preferred shares, par value: $0.01; 50.0 shares authorized; no shares issued and outstanding |  |  |
Common shares, par value: $0.01; 200.0 shares authorized; (2022) 69.9 and (2021) 69.8 outstanding before treasury shares | 1 | 1 |
Additional paid-in capital | 2,302 | 2,274 |
Accumulated other comprehensive income (loss), net of deferred income | (1,996) | 12 |
Treasury shares, at cost; 30.8 shares (2022) and 30.5 shares (2021) | (3,908) | (3,847) |
Retained earnings | 12,042 | 11,700 |
Total shareholders' equity | 8,441 | 10,139 | $ 9,726
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY | 39,966 | 38,185 |
Fixed maturities - available for sale, at fair value, amortized cost | $ 24,191 | $ 22,064 |
Preferred shares, par value | $ 0.01 | $ 0.01 |
Preferred shares, authorized | 50,000,000.0 | 50,000,000 |
Preferred shares, issued | 0 | 0 |
Preferred shares, outstanding | 0 | 0 |
Common shares, par value | $ 0.01 | $ 0.01 |
Common Stock, Shares Authorized | 200,000,000.0 | 200,000,000 |
Common shares, outstanding | 69,900,000 | 69,800,000 |
Accumulated other comprehensive income (loss), net deferred income tax expense (benefit) | $ (250) | $ 27 |
Treasury shares, at cost | 30,800,000 | 30,500,000 |
Parent Company [Member] |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Fixed maturities - available for sale, at fair value (amortized cost: 2022, $24,191; 2021, $22,064, credit allowances: 2022, $(54); 2021, $(30)) |  |  |
Other invested assets |  | 212 |
Cash | 22 | 3 |
Investment in subsidiaries, at equity in the underlying net assets | 11,116 | 10,353 |
Accrued investment income |  |  |
Receivable from subsidiaries | 11 | 10 |
Other assets | 43 | 50 |
TOTAL ASSETS | 11,192 | 10,628 |
Long term notes payable, affiliated | 2,738 | 500 |
Due to subsidiaries | 4 | 2 |
Other liabilities | 9 | (13) |
Total liabilities | 2,751 | 489 |
Preferred shares, par value: $0.01; 50.0 shares authorized; no shares issued and outstanding |  |  |
Common shares, par value: $0.01; 200.0 shares authorized; (2022) 69.9 and (2021) 69.8 outstanding before treasury shares | 1 | 1 |
Additional paid-in capital | 2,302 | 2,274 |
Accumulated other comprehensive income (loss), net of deferred income | (1,996) | 12 |
Treasury shares, at cost; 30.8 shares (2022) and 30.5 shares (2021) | (3,908) | (3,847) |
Retained earnings | 12,042 | 11,700 |
Total shareholders' equity | 8,441 | 10,139 |
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY | 11,192 | 10,628 |
Fixed maturities - available for sale, at fair value, amortized cost |  |  |
Other invested assets, at cost |  | $ 212 |
Preferred shares, par value | $ 0.01 | $ 0.01 |
Preferred shares, authorized | 50,000,000.0 | 50,000,000 |
Preferred shares, issued | 0 | 0 |
Preferred shares, outstanding | 0 | 0 |
Common shares, par value | $ 0.01 | $ 0.01 |
Common Stock, Shares Authorized | 200,000,000.0 | 200,000,000 |
Common shares, issued | 69,900,000 | 69,800,000 |
Common shares, outstanding | 69,900,000 | 69,800,000 |
Treasury shares, at cost | 30,800,000 | 30,500,000 |

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