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Commitments and Contingencies Narrative (Details) $ in Millions | Dec. 31, 2018 USD ($)
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Reserve for Off-balance Sheet Activities | Residential Mortgage |
Loss Contingencies [Line Items] |
Valuation allowances and reserves | $ 2.1

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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