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Managed Investment Entities - Narrative (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) collateralized_loan_obligation | Dec. 31, 2023 USD ($) collateralized_loan_obligation | Dec. 31, 2022 USD ($) collateralized_loan_obligation
Variable Interest Entity [Line Items] |  |  |
Percentage of investment of most subordinate debt tranche, Minimum | 13.30% |  |
Percentage of investment of most subordinate debt tranche, Maximum | 100.00% |  |
Number of collateralized loan obligation entities | collateralized_loan_obligation | 13 |  |
Number of CLOs formed during the period | collateralized_loan_obligation | 2 | 1 | 2
Number of CLOs substantially liquidated during the period | collateralized_loan_obligation | 1 | 4 |
Difference between aggregate unpaid principal balance and fair value of CLOs' fixed maturity investments | $ 66 | $ 109 |
Difference between aggregate unpaid principal balance and fair value of CLOs' debt | 172 | 253 |
Carrying amount of CLO loans in default | 3 | 7 |
Aggregate unpaid principal balance of CLO loans in default | 5 | 13 |
Available for sale (AFS) fixed maturities | 10,398 | 10,377 |
Variable interest entity, primary beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Investment in CLO tranches | 175 |  |
New collateralized loan obligation entities |  |  |
Variable Interest Entity [Line Items] |  |  |
Face value of liabilities issued by managed investment entities on issuance date | 813 | 407 | $ 754
Face amount of managed investment entities liabilities purchased by subsidiaries at issuance date | 73 | 16 | 48
New collateralized loan obligation, temporary warehousing entities |  |  |
Variable Interest Entity [Line Items] |  |  |
Investment in CLO tranches | 49 | 38 | $ 3
Subordinated debt obligations | Variable interest entity, primary beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Investment in CLO tranches | 115 |  |
Collateralized loan obligations |  |  |
Variable Interest Entity [Line Items] |  |  |
Available for sale (AFS) fixed maturities | 1,237 | 1,687 |
Collateralized loan obligations | Managed by third parties |  |  |
Variable Interest Entity [Line Items] |  |  |
Available for sale (AFS) fixed maturities | $ 1,240 | $ 1,690 |

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