Loans - Summary of Changes in Allowance for Credit Losses (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Allowance for loan losses | ||||
| Beginning balance | $ 2,345 | $ 4,508 | $ 2,148 | $ 4,666 |
| Charge-offs | (185) | (335) | (208) | (752) |
| Recoveries | 0 | 45 | 14 | 86 |
| Net (charge-offs)/recoveries | (185) | (290) | (194) | (666) |
| Provision | 124 | 341 | 377 | 611 |
| Other | (96) | (22) | (143) | (74) |
| Ending balance | $ 2,188 | $ 4,537 | $ 2,188 | $ 4,537 |
| Allowance ratio | 0.90% | 2.10% | 0.90% | 2.10% |
| Net charge-off ratio | 0.30% | 0.60% | 0.20% | 0.70% |
| Allowance for losses on lending commitments | ||||
| Beginning balance | $ 792 | $ 707 | $ 731 | $ 674 |
| Provision | (21) | 40 | 41 | 72 |
| Other | 0 | 2 | (1) | 3 |
| Ending balance | 771 | 749 | 771 | 749 |
| Wholesale | ||||
| Allowance for loan losses | ||||
| Beginning balance | 2,345 | 2,060 | 2,148 | 2,099 |
| Charge-offs | (185) | (6) | (208) | (66) |
| Recoveries | 0 | 4 | 14 | 10 |
| Net (charge-offs)/recoveries | (185) | (2) | (194) | (56) |
| Provision | 124 | 34 | 377 | 101 |
| Other | (96) | (22) | (143) | (74) |
| Ending balance | $ 2,188 | $ 2,070 | $ 2,188 | $ 2,070 |
| Allowance ratio | 0.90% | 1.10% | 0.90% | 1.10% |
| Net charge-off ratio | 0.30% | 0.00% | 0.20% | 0.10% |
| Allowance for losses on lending commitments | ||||
| Beginning balance | $ 792 | $ 707 | $ 731 | $ 674 |
| Provision | (21) | 40 | 41 | 72 |
| Other | 0 | 2 | (1) | 3 |
| Ending balance | 771 | 749 | 771 | 749 |
| Consumer | ||||
| Allowance for loan losses | ||||
| Beginning balance | 0 | 2,448 | 0 | 2,567 |
| Charge-offs | 0 | (329) | 0 | (686) |
| Recoveries | 0 | 41 | 0 | 76 |
| Net (charge-offs)/recoveries | 0 | (288) | 0 | (610) |
| Provision | 0 | 307 | 0 | 510 |
| Other | 0 | 0 | 0 | 0 |
| Ending balance | $ 0 | $ 2,467 | $ 0 | $ 2,467 |
| Allowance ratio | 0.00% | 12.80% | 0.00% | 12.80% |
| Net charge-off ratio | 0.00% | 6.10% | 0.00% | 6.40% |
| Allowance for losses on lending commitments | ||||
| Beginning balance | $ 0 | $ 0 | $ 0 | $ 0 |
| Provision | 0 | 0 | 0 | 0 |
| Other | 0 | 0 | 0 | 0 |
| Ending balance | $ 0 | $ 0 | $ 0 | $ 0 |