Loans, Lending Commitments and Related Allowance for Credit Losses - Employee Loans (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Employee Loans [Line Items]
Other receivables	$ 114,720	$ 86,158
Employee loans	4,858	4,338
ACL	(127)	(112)
Employee loans, net of ACL	$ 4,731	$ 4,226
Remaining repayment term, weighted average in years	5 years 8 months 12 days	5 years 7 months 6 days
Currently employed by the Firm \| Related Party
Employee Loans [Line Items]
Other receivables	$ 4,769	$ 4,255
No longer employed by the Firm \| Related Party
Employee Loans [Line Items]
Other receivables	$ 89	$ 83

Amount due from parties in nontrade transactions, classified as other.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant