Credit Enhancement Receivable, Credit Enhancement Deposit and Contingent Liability - Servicing Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Credit Enhancement Receivable Contingent Liability And Credit Enhancement Deposit
Credit risk loans	$ 27,571,719	$ 25,764,721
DB Cayman \| Credit Risk
Credit Enhancement Receivable Contingent Liability And Credit Enhancement Deposit
Credit risk loans	$ 8,375,966	$ 7,785,850

This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI https://asc.fasb.org/subtopic&trid=2196772

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant