Credit Enhancement Receivable, Credit Enhancement Deposit and Contingent Liability (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Credit Enhancement Receivable Contingent Liability And Credit Enhancement Deposit
Credit risk loans	$ 24,048,754	$ 20,209,577
Credit Risk
Credit Enhancement Receivable Contingent Liability And Credit Enhancement Deposit
Maximum DB Cayman credit protection	18,689	29,253
DB Cayman \| Credit Risk
Credit Enhancement Receivable Contingent Liability And Credit Enhancement Deposit
Credit risk loans	7,172,509	5,835,163
Maximum pre-credit enhancement loss exposure	6,230	9,751
Maximum loss exposure without any form of credit protection	$ 7,166,279	$ 5,825,412

Concentration risk credit risk financial instrument maximum exposure without credit protection.

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- Definition

Credit enhancement receivable contingent liability and credit enhancement deposit.

+ References

No definition available.

+ Details

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- Definition

Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13537-108611

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- Definition

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.

+ References

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

+ Details

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

+ Details

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Balance Type:	credit
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- Details

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- Details

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