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Commitments and Contingencies - Narrative (Details) - Residential Mortgage - USD ($) $ in Millions | Mar. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Loss Contingencies [Line Items] |  |  |
Valuation allowances and reserves, balance | $ 1.0 |  | $ 3.2
Accounting Standards Update 2016-13 |  |  |
Loss Contingencies [Line Items] |  |  |
Valuation allowances and reserves, balance |  | $ (2.1) |

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- Definition The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + Details
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