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Mortgage Banking Activity (Tables) | 3 Months Ended
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Mar. 31, 2024
Mortgage Banking [Abstract] |
Schedule of Residential Mortgage Loans Held For Sale | The following table summarizes activity related to residential mortgage loans held for sale as of and for the three months ended March 31, 2024 and the year ended December 31, 2023.
MORTGAGE LOAN ACTIVITY
(Dollars in millions) |  | March 31, 2024 |  | December 31, 2023
Balance at beginning of period |  | $ | 62 |  |  | $ | 44 |
Originations and purchases |  | 179 |  |  | 692 |
Sales, net of gains |  | (164) |  |  | (674) |
Balance at end of period |  | $ | 77 |  |  | $ | 62 |
Schedule of Mortgage Servicing Rights | Mortgage servicing rights had the following carrying values as of the periods indicated in the table below.
MORTGAGE SERVICING RIGHTS
|  | March 31, 2024 |  | December 31, 2023 |
(Dollars in millions) |  | Gross Carrying Amount |  |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  |  |  |  |  |
Mortgage servicing rights |  | $ | 25 |  |  |  | $ | (7) |  |  | $ | 18 |  |  | $ | 25 |  |  | $ | (7) |  |  | $ | 18 |  |  |  |  |  |  |

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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- Definition Tabular disclosure of activity in the balance of servicing assets subsequently measured at amortized cost. Includes, but is not limited to, beginning and ending balances, additions, disposals, and amortization. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-4 + Details
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