Fair Value of Financial Instruments (Details) - USD ($) |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Financial assets | ||
| Loans held-for-sale | $ 3,842,000,000 | $ 2,271,000,000 |
| Financial liabilities | ||
| Long-term debt | 84,797,000,000 | 72,591,000,000 |
| Demand deposits | 1,200,000,000,000 | 1,100,000,000,000 |
| Stated maturities | 0 | 0 |
| Carrying Value | ||
| Financial assets | ||
| Loans | 1,181,891,000,000 | 1,149,093,000,000 |
| Loans held-for-sale | 6,535,000,000 | 5,165,000,000 |
| Financial liabilities | ||
| Deposits | 2,025,124,000,000 | 2,018,729,000,000 |
| Long-term debt | 339,863,000,000 | 317,816,000,000 |
| Commercial unfunded lending commitments | 1,258,000,000 | 1,244,000,000 |
| Estimate of Fair Value Measurement | ||
| Financial assets | ||
| Loans | 1,168,154,000,000 | 1,136,439,000,000 |
| Loans held-for-sale | 6,535,000,000 | 5,165,000,000 |
| Financial liabilities | ||
| Deposits | 2,026,180,000,000 | 2,020,072,000,000 |
| Long-term debt | 345,453,000,000 | 324,406,000,000 |
| Commercial unfunded lending commitments | 6,383,000,000 | 6,740,000,000 |
| Estimate of Fair Value Measurement | Level 2 | ||
| Financial assets | ||
| Loans | 46,421,000,000 | 51,136,000,000 |
| Loans held-for-sale | 6,001,000,000 | 4,720,000,000 |
| Financial liabilities | ||
| Deposits | 2,026,180,000,000 | 2,020,072,000,000 |
| Long-term debt | 344,468,000,000 | 323,681,000,000 |
| Commercial unfunded lending commitments | 108,000,000 | 67,000,000 |
| Estimate of Fair Value Measurement | Level 3 | ||
| Financial assets | ||
| Loans | 1,121,733,000,000 | 1,085,303,000,000 |
| Loans held-for-sale | 534,000,000 | 445,000,000 |
| Financial liabilities | ||
| Deposits | 0 | 0 |
| Long-term debt | 985,000,000 | 725,000,000 |
| Commercial unfunded lending commitments | $ 6,275,000,000 | $ 6,673,000,000 |