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TFA - Principal amounts outstanding / total assets - continuing involvement (Details 2) - CHF (SFr) SFr in Millions	Jun. 30, 2022	Dec. 31, 2021
CMBS
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	SFr 20,202	SFr 15,428
Total assets of SPE	38,723	23,205
RMBS
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	49,342	56,990
Total assets of SPE	49,342	56,990
Other asset-backed financings
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	23,514	24,856
Total assets of SPE	56,511	57,797
Bank | CMBS
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	20,202	15,428
Total assets of SPE	38,723	23,205
Bank | RMBS
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	49,342	56,990
Total assets of SPE	49,342	56,990
Bank | Other asset-backed financings
Principal amounts outstanding and total assets of SPEs resulting from continuing involvement
Principal amount outstanding	23,514	24,856
Total assets of SPE	SFr 56,511	SFr 57,797

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 http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719

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- References

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X

- Definition

Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that continue to be recognized in the statement of financial position. 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)(3)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719

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