v3.26.1
Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Summary of Accounting and Financial Policies [Line Items]      
Firm's revenues from contracts with clients as a percentage of firm's total non-interest revenues 50.00% 45.00%  
Investment banking revenues from contracts with clients as a percentage of firms' investment banking revenue 95.00% 80.00%  
Investment management revenues from contracts with clients as a percentage of firm's investment management revenue 95.00% 95.00%  
Cash and cash equivalents due from banks $ 7,010   $ 6,520
Interest-bearing deposits with banks 172,520   157,740
Cash segregated for regulatory and other purposes 15,760   14,800
Receivable from customers and counterparties 134,040   125,000
Receivables from brokers, dealers and clearing organizations 75,440   60,840
Firm's receivables from contracts with clients 4,430   4,160
Payables to customers and counterparties 265,760   224,460
Payables to brokers, dealers and clearing organizations 27,280   $ 7,410
Maximum      
Summary of Accounting and Financial Policies [Line Items]      
Annual average revenues associated with known remaining performance obligations $ 400