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Accounting Policies - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Significant Accounting Policies [Line Items] |  |  |
Assets of managed investment entities | $ 4,669 |  | $ 4,484
Liabilities of managed investment entities | 4,468 |  | 4,307
Operating lease liability | $ 204 |  | $ 198
Operating lease liability, current, Statement of Financial Position | Other Liabilities |  | Other Liabilities
Operating lease right-of-use asset | $ 181 |  | $ 176
Operating lease, right-of-use asset, Statement of Financial Position | Other Assets |  | Other Assets
Weighted average common shares adjustment related to stock-based compensation (shares) | 100,000 | 200,000 |
Anti-dilutive potential common shares related to stock-based compensation plans (shares) | 0 | 0 |
Maturities of short term investments | 3 months |  |
New collateralized loan obligation temporary warehousing entities |  |  |
Significant Accounting Policies [Line Items] |  |  |
Assets of managed investment entities | $ 164 |  |
Liabilities of managed investment entities | $ 134 |  |

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