Loans, Lending Commitments and Related Allowance for Credit Losses - Employee Loans (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025
Employee Loans [Line Items]
Other receivables	$ 132,599	$ 114,720
Employee loans	4,917	4,858
ACL	(118)	(127)
Employee loans, net of ACL	$ 4,799	$ 4,731
Remaining repayment term, weighted average in years	5 years 8 months 12 days	5 years 8 months 12 days
Currently employed by the Firm \| Related Party
Employee Loans [Line Items]
Other receivables	$ 4,830	$ 4,769
No longer employed by the Firm \| Related Party
Employee Loans [Line Items]
Other receivables	$ 87	$ 89

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

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Balance Type:	debit
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