Fair Value of Financial Assets and Liabilities - Narrative (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Investments without determinable fair values | $ 204 | $ 150 |
| Private Credit | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Outstanding commitments | 504 | |
| Private Equity Funds | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Outstanding commitments | 436 | |
| Real Estate Funds | ||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Outstanding commitments | $ 568 |