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Debt Securities Available for Sale - Debt securities available- for-sale - Additional Information (Details) - USD ($) |  | 12 Months Ended
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Oct. 15, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Debt Securities, Available-for-sale |  |  |  |
Proceeds from sale of debt securities available-for-sale |  | $ 0 | $ 235,992,000 | $ 5,103,000
Available-for-sale securities transfer to Held-to-maturity |  | 6,531,092,000 | 0 | $ 0
Gross unrealized losses |  | 1,759,691,000 | 298,348,000 |
US Treasury Securities |  |  |  |
Debt Securities, Available-for-sale |  |  |  |
Proceeds from sale of debt securities available-for-sale |  |  | 236,000,000 |
Available-for-sale securities transfer to Held-to-maturity | $ 6,500,000,000 |  |  |
Available-for-sale securities transfer to Held-to-Maturity at par value | 7,400,000,000 |  |  |
Gross unrealized losses | $ 873,000,000.0 | $ 498,278,000 | $ 102,059,000 |

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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3179-108585 + Details
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