Investments (excluding Consolidated Investment Entities) - Proceeds and Gross Gains/(Losses) (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Investments, Debt and Equity Securities [Abstract] | ||||
| Proceeds on sales | $ 1,247 | $ 969 | $ 2,500 | $ 2,379 |
| Gross gains | 5 | 10 | 32 | 27 |
| Gross losses | $ 21 | $ 9 | $ 43 | $ 44 |