Loans, Lending Commitments and Related Allowance for Credit Losses - Nonaccrual Loans Held for Investment before Allowance (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Nonaccrual loans | $ 1,007 | $ 1,147 |
| Nonaccrual loans without an ACL | 180 | 180 |
| Corporate | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Nonaccrual loans | 146 | 203 |
| Secured lending facilities | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Nonaccrual loans | 7 | 14 |
| Commercial real estate | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Nonaccrual loans | 454 | 476 |
| Residential real estate | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Nonaccrual loans | 193 | 208 |
| Securities-based lending and Other | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Nonaccrual loans | $ 207 | $ 246 |