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Fair Value of Financial Instruments - Fair Value of Assets and Liabilities on a Recurring Basis (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Dec. 31, 2023
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Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | $ 293,011 | $ 269,878
Liabilities | (21,257) | (16,962)
Corporate bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 70,234 | 69,657
U.S. government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 398 | 393
State and municipal bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2,567 | 2,790
Foreign government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 252 | 283
RMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,882 | 1,773
CMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,643 | 1,424
ABS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 13,444 | 12,171
Hybrid and redeemable preferred securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 262 | 247
Trading securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2,206 | 2,359
Equity securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 293 | 306
Mortgage loans on real estate |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 263 | 288
Derivative investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 16,143 | 11,496
Other investments – short-term investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 229 | 233
Cash and invested cash |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 6,013 | 3,365
MRB assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 4,565 | 3,894
Ceded MRBs |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2 | 2
Liabilities | (341) | (239)
Indexed annuity ceded embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,132 | 940
Separate account assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 171,483 | 158,257
RILA, fixed indexed annuity and IUL contracts |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (12,270) | (9,077)
Reinsurance-related embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (668) | (552)
MRB liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (1,272) | (1,716)
Derivative liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (6,706) | (5,378)
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 832 | 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 | 378 | 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 | 51 | 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 | 0 | 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) | Indexed annuity ceded embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 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 | 403 | 402
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] |  |
Liabilities | 0 | 0
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 | 281,001 | 258,928
Liabilities | (7,821) | (4,555)
Significant Observable Inputs (Level 2) | Corporate bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 67,568 | 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 | 2,567 | 2,785
Significant Observable Inputs (Level 2) | Foreign government bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 252 | 283
Significant Observable Inputs (Level 2) | RMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,869 | 1,760
Significant Observable Inputs (Level 2) | CMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,622 | 1,416
Significant Observable Inputs (Level 2) | ABS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 11,343 | 10,687
Significant Observable Inputs (Level 2) | Hybrid and redeemable preferred securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 134 | 153
Significant Observable Inputs (Level 2) | Trading securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,932 | 2,075
Significant Observable Inputs (Level 2) | Equity securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 258 | 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 | 16,134 | 10,874
Significant Observable Inputs (Level 2) | Other investments – short-term investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 209 | 233
Significant Observable Inputs (Level 2) | Cash and invested cash |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 6,013 | 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) | Indexed annuity ceded embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 0 | 0
Significant Observable Inputs (Level 2) | Separate account assets |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 171,080 | 157,855
Significant Observable Inputs (Level 2) | RILA, fixed indexed annuity and IUL contracts |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | 0 | 0
Significant Observable Inputs (Level 2) | Reinsurance-related embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (1,125) | 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 | (6,696) | (4,792)
Significant Unobservable Inputs (Level 3) |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 11,178 | 10,127
Liabilities | (13,436) | (12,407)
Significant Unobservable Inputs (Level 3) | Corporate bonds |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2,666 | 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 | 13 | 13
Significant Unobservable Inputs (Level 3) | CMBS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 21 | 8
Significant Unobservable Inputs (Level 3) | ABS |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2,101 | 1,484
Significant Unobservable Inputs (Level 3) | Hybrid and redeemable preferred securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 77 | 48
Significant Unobservable Inputs (Level 3) | Trading securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 274 | 284
Significant Unobservable Inputs (Level 3) | Equity securities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 35 | 42
Significant Unobservable Inputs (Level 3) | Mortgage loans on real estate |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 263 | 288
Significant Unobservable Inputs (Level 3) | Derivative investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 9 | 622
Significant Unobservable Inputs (Level 3) | Other investments – short-term investments |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 20 | 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 | 4,565 | 3,894
Significant Unobservable Inputs (Level 3) | Ceded MRBs |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 2 | 2
Liabilities | (341) | (239)
Significant Unobservable Inputs (Level 3) | Indexed annuity ceded embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Assets | 1,132 | 940
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) | RILA, fixed indexed annuity and IUL contracts |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (12,270) | (9,077)
Significant Unobservable Inputs (Level 3) | Reinsurance-related embedded derivatives |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | 457 | (789)
Significant Unobservable Inputs (Level 3) | MRB liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | (1,272) | (1,716)
Significant Unobservable Inputs (Level 3) | Derivative liabilities |  |
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] |  |
Liabilities | $ (10) | $ (586)

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