Commitments and Contingencies - Schedule of Investment Commitments (Details) - Commitment to Invest $ in Millions	Sep. 30, 2024 USD ($)
Other Commitments [Line Items]
Total	$ 3,105
Limited partnerships
Other Commitments [Line Items]
Total	1,148
Whole loans
Other Commitments [Line Items]
Total	949
Fixed maturity securities, ABS
Other Commitments [Line Items]
Total	359
Direct Lending
Other Commitments [Line Items]
Total	273
Other fixed maturity securities, AFS
Other Commitments [Line Items]
Total	43
Commercial mortgage loans
Other Commitments [Line Items]
Total	79
Other assets
Other Commitments [Line Items]
Total	145
Other invested assets
Other Commitments [Line Items]
Total	$ 109