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Income Taxes (Reconciliation Of The Difference Between The Provision For Income Taxes And The Expected Tax Provision At The Weighted Average Tax Rate) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Taxes [Line Items] |  |  |
Underwriting gain (loss) | $ 477 | $ 224 | $ (254)
Net investment income | 830 | 1,165 | 642
Net realized capital gains (losses) | (455) | 258 | 268
Corporate expenses | (61) | (68) | (41)
Interest, fee and bond issue cost amortization expense | (101) | (70) | (36)
Other income (expense) | (102) | 37 | 6
INCOME (LOSS) BEFORE TAXES | 588 | 1,546 | 585
Increase (decrease) in taxes resulting from: |  |  |
Total income tax provision | (9) | 167 | 71
Domestic [Member] |  |  |
Income Taxes [Line Items] |  |  |
Underwriting gain (loss) | (81) | (83) | 24
Net investment income | 607 | 708 | 340
Net realized capital gains (losses) | (426) | 266 | 235
Net derivative gain (loss) |  |  |
Corporate expenses | (26) | (33) | (16)
Interest, fee and bond issue cost amortization expense | (101) | (70) | (36)
Other income (expense) | (6) | 23 | (15)
INCOME (LOSS) BEFORE TAXES | (32) | 811 | 532
Expected tax provision at the applicable statutory rate(s) | (9) | 170 | 112
Increase (decrease) in taxes resulting from: |  |  |
Tax exempt income | (4) | (4) | (4)
Dividend received deduction | (3) | (1) | (1)
Proration | 1 | 1 | 1
Affiliated preferred stock dividends | 7 | 7 | 7
Creditable foreign premium tax | (11) | (13) | (12)
Tax audit settlement |  |  |
Share based compensation tax benefits formerly in APIC | (3) | (2) | (3)
Impact of CARES Act |  |  | (32)
Valuation allowance |  |  |
Change in uncertain tax positions |  |  |
Other | 5 | 3 | 3
Total income tax provision | (14) | 161 | 71
Non-U.S. [Member] |  |  |
Income Taxes [Line Items] |  |  |
Underwriting gain (loss) | 558 | 307 | (278)
Net investment income | 223 | 457 | 303
Net realized capital gains (losses) | (29) | (8) | 33
Net derivative gain (loss) |  | 3 | 2
Corporate expenses | (35) | (34) | (25)
Interest, fee and bond issue cost amortization expense |  |  | (1)
Other income (expense) | (96) | 11 | 20
INCOME (LOSS) BEFORE TAXES | 620 | 735 | 53
Expected tax provision at the applicable statutory rate(s) |  | 14 | (10)
Increase (decrease) in taxes resulting from: |  |  |
Tax exempt income |  |  |
Dividend received deduction |  |  |
Proration |  |  |
Affiliated preferred stock dividends |  |  |
Creditable foreign premium tax |  |  |
Tax audit settlement |  |  |
Share based compensation tax benefits formerly in APIC |  |  |
Impact of CARES Act |  |  |
Valuation allowance | 5 | (10) | 15
Change in uncertain tax positions |  |  |
Other |  | 1 | (5)
Total income tax provision | $ 5 | $ 5 |

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