Allowance for credit losses - T D R that subsequently defaulted (Details) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($) loans
Financing Receivable
Loan count \| loans	34
Recorded investment as of first default date \| $	$ 2,125
Mortgages
Financing Receivable
Loan count \| loans	6
Recorded investment as of first default date \| $	$ 1,870
Consumer \| Credit card
Financing Receivable
Loan count \| loans	16
Recorded investment as of first default date \| $	$ 127
Consumer \| Personal loans
Financing Receivable
Loan count \| loans	12
Recorded investment as of first default date \| $	$ 128

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No definition available.

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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- Definition

Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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