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Fair Value of Financial Instruments (Components Of The Transfers In And Out Of Level 3) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 | $ 352 | $ 237 | $ 1,212
Transfers Out of Level 3 | (3,400) | (3,269) | (729)
Total | (3,048) | (3,032) | 483
Corporate Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 | 296 | 163 | 343
Transfers Out of Level 3 | (2,968) | (134) | (243)
Total | (2,672) | 29 | 100
RMBS [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 |  |  | 1
Transfers Out of Level 3 | (25) |  | (10)
Total | (25) |  | (9)
ABS [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 | 16 | 36 | 20
Transfers Out of Level 3 | (332) | (330) | (221)
Total | (316) | (294) | (201)
U.S. Government Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 |  |  | 5
Transfers Out of Level 3 |  |  | (5)
Foreign Government Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Out of Level 3 | (5) | (102) |
Total | (5) | (102) |
CMBS [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Out of Level 3 | (17) | (8) |
Total | (17) | (8) |
State And Municipal Bonds [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 | 36 |  |
Total | 36 |  |
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity AFS Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 |  |  | 18
Transfers Out of Level 3 | (4) |  |
Total | (4) |  | 18
Mortgage Loans On Real Estate [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 |  |  | 787
Total |  |  | 787
Trading Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 | 4 | 14 | 33
Transfers Out of Level 3 | (19) | (37) | (34)
Total | (15) | (23) | (1)
Equity Securities [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 |  |  | 5
Transfers Out of Level 3 | (15) |  |
Total | (15) |  | 5
Derivative Investments [Member] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers, Net [Abstract] |  |  |
Transfers Into Level 3 |  | 24 |
Transfers Out of Level 3 | (15) | (2,658) | (216)
Total | $ (15) | $ (2,634) | $ (216)

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