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Mortgage Banking Activity (Tables) | 6 Months Ended
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Jun. 30, 2021
Mortgage Banking [Abstract] |
Schedule of Residential Mortgage Loans Held For Sale | The following table summarizes activity relating to residential mortgage loans held for sale as of the six months ended June 30, 2021 and the year ended December 31, 2020.
(Dollars in millions) |  | June 30, 2021 |  | December 31, 2020
Balance at beginning of period |  | $ | 409 |  |  | $ | 4 |
Acquired |  | — |  |  | 320 |
Originations and purchases |  | 1,420 |  |  | 2,499 |
Sales, net of gains |  | (1,489) |  |  | (2,405) |
Mortgage loans transferred from (to) held for investment |  | 30 |  |  | (9) |
Balance at end of period |  | $ | 370 |  |  | $ | 409 |
Schedule of Mortgage Servicing Rights | Mortgage servicing rights had the following carrying values as of the periods indicated.
|  | June 30, 2021 |  | December 31, 2020 |
(Dollars in millions) |  | Gross Carrying Amount |  |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  |  |  |  |  |
Mortgage servicing rights |  | $ | 34 |  |  |  | $ | (6) |  |  | $ | 28 |  |  | $ | 28 |  |  | $ | (3) |  |  | $ | 25 |  |  |  |  |  |  |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746 + Details
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