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Fair Value of Financial Instruments - Fair Value of Assets and Liabilities on a Recurring Basis (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | $ 282,327 | $ 269,878
Liabilities | (19,980) | (16,962)
Corporate bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 68,533 | 69,657
U.S. government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 391 | 393
State and municipal bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2,743 | 2,790
Foreign government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 263 | 283
RMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,759 | 1,773
CMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,484 | 1,424
ABS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 12,349 | 12,171
Hybrid and redeemable preferred securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 242 | 247
Trading securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2,227 | 2,359
Equity securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 319 | 306
Mortgage loans on real estate |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 289 | 288
Derivative investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 15,311 | 11,496
Other investments – short-term investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 217 | 233
Cash and invested cash |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 4,122 | 3,365
MRB assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 4,878 | 3,894
Ceded MRBs |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2 | 2
Liabilities | (360) | (239)
RILA, fixed indexed annuity and IUL contracts |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 973 | 940
Liabilities | (10,896) | (9,077)
Separate account assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 166,225 | 158,257
Reinsurance-related embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (355) | (552)
MRB liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (1,266) | (1,716)
Derivative liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (7,103) | (5,378)
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 837 | 823
Liabilities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 371 | 374
Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | RMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | CMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | ABS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Hybrid and redeemable preferred securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 48 | 46
Quoted Prices in Active Markets for Identical Assets (Level 1) | Trading securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 12 | 1
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage loans on real estate |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other investments – short-term investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Cash and invested cash |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | MRB assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Ceded MRBs |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Liabilities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | RILA, fixed indexed annuity and IUL contracts |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Liabilities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Separate account assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 406 | 402
Quoted Prices in Active Markets for Identical Assets (Level 1) | Reinsurance-related embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | MRB liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | 0 | 0
Significant Observable Inputs (Level 2) |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 270,059 | 258,928
Liabilities | (6,149) | (4,555)
Significant Observable Inputs (Level 2) | Corporate bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 66,044 | 67,160
Significant Observable Inputs (Level 2) | U.S. government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 20 | 19
Significant Observable Inputs (Level 2) | State and municipal bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2,743 | 2,785
Significant Observable Inputs (Level 2) | Foreign government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 263 | 283
Significant Observable Inputs (Level 2) | RMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,747 | 1,760
Significant Observable Inputs (Level 2) | CMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,476 | 1,416
Significant Observable Inputs (Level 2) | ABS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 10,657 | 10,687
Significant Observable Inputs (Level 2) | Hybrid and redeemable preferred securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 143 | 153
Significant Observable Inputs (Level 2) | Trading securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,956 | 2,075
Significant Observable Inputs (Level 2) | Equity securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 268 | 263
Significant Observable Inputs (Level 2) | Mortgage loans on real estate |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Significant Observable Inputs (Level 2) | Derivative investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 14,584 | 10,874
Significant Observable Inputs (Level 2) | Other investments – short-term investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 217 | 233
Significant Observable Inputs (Level 2) | Cash and invested cash |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 4,122 | 3,365
Significant Observable Inputs (Level 2) | MRB assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Significant Observable Inputs (Level 2) | Ceded MRBs |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Liabilities | 0 | 0
Significant Observable Inputs (Level 2) | RILA, fixed indexed annuity and IUL contracts |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Liabilities | 0 | 0
Significant Observable Inputs (Level 2) | Separate account assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 165,819 | 157,855
Significant Observable Inputs (Level 2) | Reinsurance-related embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | 228 | 237
Significant Observable Inputs (Level 2) | MRB liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | 0 | 0
Significant Observable Inputs (Level 2) | Derivative liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (6,377) | (4,792)
Significant Unobservable Inputs (Level 3) |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 11,431 | 10,127
Liabilities | (13,831) | (12,407)
Significant Unobservable Inputs (Level 3) | Corporate bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2,489 | 2,497
Significant Unobservable Inputs (Level 3) | U.S. government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Significant Unobservable Inputs (Level 3) | State and municipal bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 5
Significant Unobservable Inputs (Level 3) | Foreign government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Significant Unobservable Inputs (Level 3) | RMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 12 | 13
Significant Unobservable Inputs (Level 3) | CMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 8 | 8
Significant Unobservable Inputs (Level 3) | ABS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,692 | 1,484
Significant Unobservable Inputs (Level 3) | Hybrid and redeemable preferred securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 51 | 48
Significant Unobservable Inputs (Level 3) | Trading securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 271 | 284
Significant Unobservable Inputs (Level 3) | Equity securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 39 | 42
Significant Unobservable Inputs (Level 3) | Mortgage loans on real estate |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 289 | 288
Significant Unobservable Inputs (Level 3) | Derivative investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 727 | 622
Significant Unobservable Inputs (Level 3) | Other investments – short-term investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Significant Unobservable Inputs (Level 3) | Cash and invested cash |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Significant Unobservable Inputs (Level 3) | MRB assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 4,878 | 3,894
Significant Unobservable Inputs (Level 3) | Ceded MRBs |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2 | 2
Liabilities | (360) | (239)
Significant Unobservable Inputs (Level 3) | RILA, fixed indexed annuity and IUL contracts |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 973 | 940
Liabilities | (10,896) | (9,077)
Significant Unobservable Inputs (Level 3) | Separate account assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Significant Unobservable Inputs (Level 3) | Reinsurance-related embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (583) | (789)
Significant Unobservable Inputs (Level 3) | MRB liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (1,266) | (1,716)
Significant Unobservable Inputs (Level 3) | Derivative liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | $ (726) | $ (586)

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