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Fair Value Measurements - Quantitative Information about Level 3 Fair Value Measurements (Details) $ in Millions | Dec. 31, 2020 USD ($)
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Auction Rate Securities Owned |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Valuation Adjustment For Level Two and Three Assets | $ 5.0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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