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Fair value option - Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Assets of consolidated investment management funds:
Trading assets	$ 13,625	$ 13,981
Other assets	1,608	2,151
Liabilities of consolidated investment management funds:
Other liabilities	872	422
Investment Management funds
Assets of consolidated investment management funds:
Trading assets	800	846
Other assets	26	45
Total assets	826	891
Liabilities of consolidated investment management funds:
Other liabilities	9	5
Total liabilities	$ 9	$ 5

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Fair value portion of asset recognized for present right to economic benefit.

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Fair value of financial and nonfinancial obligations.

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