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TFA - Principal amounts outstanding / total assets - continuing involvement (Details 2) - CHF (SFr) SFr in Millions	Jun. 30, 2023	Dec. 31, 2022
CMBS
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	SFr 5,170	SFr 17,193
RMBS
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	23,869	41,552
Other asset-backed financings
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	SFr 22,895	SFr 21,939

X

- Definition

Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719

+ Details

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Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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- Details

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X

- Details

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- Details

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