Organization and Basis of Presentation - Allowance for Loan and Lease Losses (Details)	12 Months Ended
Dec. 31, 2019 component
Allowance for loan and lease losses
Reserve for credit losses, number of components	2
Consumer \| Minimum
Allowance for loan and lease losses
Threshold period past due for charge-off	120 days
Consumer \| Maximum
Allowance for loan and lease losses
Threshold period past due for charge-off	180 days

Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447

Name:	us-gaap_FinancingReceivableThresholdPeriodPastDueWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant