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Securities Financing Activities (Tables) | 12 Months Ended
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Dec. 31, 2023
Broker-Dealer [Abstract] |
Schedule of Summarized Securities Financing Agreements | The following table summarizes our securities financing agreements at December 31, 2023, and December 31, 2022:
| December 31, 2023 |  | December 31, 2022
Dollars in millions | Gross Amount Presented in Balance Sheet | Netting Adjustments (a) | Collateral (b) | Net Amounts |  | Gross Amount Presented in Balance Sheet | Netting Adjustments (a) | Collateral (b) | Net Amounts
Offsetting of financial assets: |  |  |  |  |  |  |  |  |
Reverse repurchase agreements | $ | 7 |  | $ | (7) |  | $ | — |  | $ | — |  |  | $ | 8 |  | $ | (8) |  | $ | — |  | $ | — |
Securities borrowed | — |  | — |  | — |  | — |  |  | — |  | — |  | — |  | — |
Total | $ | 7 |  | $ | (7) |  | $ | — |  | $ | — |  |  | $ | 8 |  | $ | (8) |  | $ | — |  | $ | — |
Offsetting of financial liabilities: |  |  |  |  |  |  |  |  |
Repurchase agreements (c) | $ | 38 |  | $ | (7) |  | $ | (31) |  | $ | — |  |  | $ | 71 |  | $ | (8) |  | $ | (63) |  | $ | — |
Total | $ | 38 |  | $ | (7) |  | $ | (31) |  | $ | — |  |  | $ | 71 |  | $ | (8) |  | $ | (63) |  | $ | — |
(a)Netting adjustments take into account the impact of master netting agreements that allow us to settle with a single counterparty on a net basis. (b)These adjustments take into account the impact of bilateral collateral agreements that allow us to offset the net positions with the related collateral. The application of collateral cannot reduce the net position below zero. Therefore, excess collateral, if any, is not reflected above. (c)Repurchase agreements are collateralized by mortgaged-backed agency securities and are contracted on an overnight or continuous basis.

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- Definition Tabular disclosure of securities financing transactions including resale and repurchase agreements, securities borrowed and lending transactions, securities received as collateral and obligations to return securities received as collateral. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483466/210-20-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 860 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481420/860-30-50-1A + Details
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