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Fair Value Measurements (Narrative) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
Unrealized Gain (Loss) on Investments | $ 1.4
Investments, Fair Value Disclosure | $ 8.6

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