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Concentrations of Credit Risk (Details) - Liabilities - Credit Concentration Risk - USD ($) $ in Billions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Concentration Risk |  |
Maximum DB Cayman credit protection | $ 9.2 | $ 9.0
California |  |
Concentration Risk |  |
Concentration risk percentage | 19.00% | 20.00%
Texas |  |
Concentration Risk |  |
Concentration risk percentage | 13.00% | 12.00%

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- Definition Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-21 + Details
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