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Commitments and Contingencies (Narratives) (Details) - USD ($) $ in Millions | Jan. 01, 2020 | Mar. 31, 2021 | Dec. 31, 2020
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Commitments and Contingencies [Abstract] |  |  |
Increase (Decrease) In Off-Balance Sheet Allowance | $ 0.2 |  |
Allowance For Credit Losses For Off-Balance Sheet |  | $ 1.2 | $ 1.1
Contingency loss accrued liability |  | 7.8 | 8.1
Other non-credit commitments |  | $ 11.9 | $ 9.0

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- Definition Allowance For Credit Losses For Off-Balance Sheet + References No definition available. + Details
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- Definition Increase (Decrease) In Off-Balance Sheet Allowance + References No definition available. + Details
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- Definition Other Non-Credit Commitments + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Amount of loss contingency liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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