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Accounting Policies - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025
Variable Interest Entity [Line Items] |  |  |
Assets of managed investment entities | $ 3,987 |  | $ 4,050
Liabilities of managed investment entities | 3,854 |  | 3,907
Operating lease liability | $ 213 |  | $ 216
Operating lease liability, current, Statement of Financial Position | Other Liabilities |  | Other Liabilities
Operating lease right-of-use asset | $ 193 |  | $ 198
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) | 0 |  |
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 |  |  |
Variable Interest Entity [Line Items] |  |  |
Assets of managed investment entities | $ 47 |  |
Liabilities of managed investment entities | $ 37 |  |
Maximum |  |  |
Variable Interest Entity [Line Items] |  |  |
Weighted average common shares adjustment related to stock-based compensation (shares) |  | 100,000 |

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