Managed Investment Entities - Narrative (Details) $ in Millions	12 Months Ended
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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