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Fair Value of Financial Instruments (Schedule Of Investment Holdings Movements) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | $ 1,963 | $ 2,661 | $ 2,366
Sales | (338) | (312) | (809)
Maturities | (112) | (329) | (574)
Settlements | (751) | (540) | (1,135)
Calls | (69) | (60) | (132)
Total | 693 | 1,420 | (284)
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | 1,263 | 1,408 | 1,126
Sales | (100) | (33) | (250)
Maturities | (82) | (109) | (43)
Settlements | (235) | (488) | (237)
Calls | (50) | (30) | (132)
Total | 796 | 748 | 464
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Maturities |  | (5) |
Total |  | (5) |
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances |  | 80 |
Maturities | (30) |  | (20)
Total | (30) | 80 | (20)
RMBS [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | 21 | 3 |
Total | 21 | 3 |
CMBS [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | 17 | 8 |
Total | 17 | 8 |
ABS [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | 918 | 835 | 572
Settlements | (235) | (233) | (76)
Calls | (7) |  |
Total | 676 | 602 | 496
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances |  | 12 | 14
Sales |  | (20) | (4)
Calls | (12) | (30) |
Total | (12) | (38) | 10
Mortgage Loans On Real Estate [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | 15 | 96 | 71
Sales |  | (101) | (15)
Maturities |  | (26) |
Settlements | (242) | (78) |
Total | (227) | (109) | 56
Trading Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | 287 | 383 | 300
Sales | (229) | (24) | (126)
Maturities |  |  | (40)
Settlements | (210) | (149) | (166)
Total | (152) | 210 | (32)
Equity Securities [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | 28 | 7 | 22
Sales | (9) | (10) | (2)
Total | 19 | (3) | 20
Derivative Investments [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances |  | 174 | 520
Sales |  | (124) | (412)
Maturities |  | (189) | (471)
Total |  | (139) | (363)
Indexed Annuity And IUL Contracts [Member] | Other Assets [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | 124 | 55 | 25
Settlements | 88 | (164) | (940)
Total | 212 | (109) | (915)
Indexed Annuity And IUL Contracts [Member] | Future Contract Benefits [Member] |  |  |
Fair Value Investments Entities That Calculate Net Asset Value Per Share Unobservable Input Investment Holdings Movements [Abstract] |  |  |
Issuances | (710) | (400) | (284)
Settlements | 83 | 572 | $ 284
Total | $ (627) | $ 172 |

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