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Fair Value of Financial Instruments (Fair Value of Assets and Liabilities on a Recurring Basis) (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | $ 263,616 | $ 319,919
Liabilities measured at fair value | (6,222) | (9,505)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 842 | 1,167
Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 252,380 | 307,666
Liabilities measured at fair value | (2,274) | (3,064)
Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 10,394 | 11,086
Liabilities measured at fair value | (3,948) | (6,441)
Corporate Bonds [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 83,158 | 98,120
Corporate Bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 77,682 | 92,400
Corporate Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 5,476 | 5,720
ABS [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 9,710 | 8,512
ABS [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 8,557 | 7,642
ABS [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 1,153 | 870
U.S. Government Bonds [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 415 | 433
U.S. Government Bonds [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 394 | 428
U.S. Government Bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 21 | 5
Foreign Government Bonds [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 348 | 432
Foreign Government Bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 311 | 391
Foreign Government Bonds [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 37 | 41
RMBS [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 2,182 | 2,525
RMBS [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 2,181 | 2,521
RMBS [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 1 | 4
CMBS [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 1,557 | 1,599
CMBS [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 1,557 | 1,599
State And Municipal Bonds [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 5,523 | 6,621
State And Municipal Bonds [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 5,523 | 6,621
Hybrid And Redeemable Preferred Securities [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 472 | 504
Hybrid And Redeemable Preferred Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 44 | 54
Hybrid And Redeemable Preferred Securities [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 324 | 357
Hybrid And Redeemable Preferred Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 104 | 93
Mortgage Loans On Real Estate [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 528 | 739
Mortgage Loans On Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 528 | 739
Trading Securities [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 3,822 | 4,482
Trading Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value |  | 32
Trading Securities [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 3,202 | 3,622
Trading Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 620 | 828
Equity Securities [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 344 | 318
Equity Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 12 | 7
Equity Securities [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 187 | 216
Equity Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 145 | 95
Derivative Investments [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 5,836 | 7,746
Derivative Investments [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 5,387 | 7,597
Derivative Investments [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 449 | 149
Other Investments [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 177 | 154
Other Investments [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 177 | 154
Invested Cash [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 1,567 | 2,612
Invested Cash [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 1,567 | 2,612
GLB Direct Embedded Derivatives [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 1,400 | 1,963
GLB Direct Embedded Derivatives [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 1,400 | 1,963
GLB Ceded Embedded Derivatives [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 41 | 56
Liabilities measured at fair value | (136) | (182)
GLB Ceded Embedded Derivatives [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 41 | 56
Liabilities measured at fair value | (136) | (182)
Reinsurance Related Embedded Derivatives [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 305 |
Liabilities measured at fair value |  | (206)
Reinsurance Related Embedded Derivatives [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 305 |
Liabilities measured at fair value |  | (206)
Indexed Annuity And IUL Contracts [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 440 | 528
Liabilities measured at fair value | (3,366) | (6,131)
Indexed Annuity And IUL Contracts [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 440 | 528
Liabilities measured at fair value | (3,366) | (6,131)
Separate Account Assets [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 145,791 | 182,575
Separate Account Assets [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 392 | 646
Separate Account Assets [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets measured at fair value | 145,399 | 181,929
Derivative Liabilities [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities measured at fair value | (2,720) | (2,986)
Derivative Liabilities [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities measured at fair value | (2,274) | (2,858)
Derivative Liabilities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities measured at fair value | $ (446) | $ (128)

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