Premises and Equipment (Schedule of Premises and Equipment) (Details) - USD ($) $ in Millions |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Premises and equipment, gross | $ 4,207 | $ 4,700 |
| Accumulated depreciation and amortization | (2,534) | (3,058) |
| Premises and equipment, net | 1,673 | 1,642 |
| Land | ||
| Property, Plant and Equipment [Line Items] | ||
| Premises and equipment, gross | 409 | 409 |
| Premises and improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Premises and equipment, gross | 1,568 | 1,555 |
| Furniture and equipment | ||
| Property, Plant and Equipment [Line Items] | ||
| Premises and equipment, gross | 1,122 | 1,103 |
| Software | ||
| Property, Plant and Equipment [Line Items] | ||
| Premises and equipment, gross | 378 | 1,034 |
| Leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Premises and equipment, gross | 457 | 449 |
| Construction in progress | ||
| Property, Plant and Equipment [Line Items] | ||
| Premises and equipment, gross | $ 273 | $ 150 |