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Investment Securities (Narrative) (Details) $ in Millions | Jun. 30, 2024 USD ($) securities | Dec. 31, 2023 USD ($) securities
--- | --- | ---
Marketable Securities [Line Items] |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions | securities | 1,263 | 600
Debt Securities |  |
Marketable Securities [Line Items] |  |
Interest Receivable | $ | $ 33.5 | $ 34.1

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