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TFA - Carrying amounts for sale treatmen not achieved (Details 5) - CHF (SFr) SFr in Millions	Dec. 31, 2022	Dec. 31, 2021
RMBS | Other assets
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Assets, transfer of financial interest, sale treatment not achieved	SFr 0	SFr 257
RMBS | Other liabilities
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Liability to SPE, transfer of financial interest, sale treatment not achieved	0	(257)
Other asset-backed financings | Trading assets
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Assets, transfer of financial interest, sale treatment not achieved	366	557
Other asset-backed financings | Other assets
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Assets, transfer of financial interest, sale treatment not achieved	154	200
Other asset-backed financings | Other liabilities
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Liability to SPE, transfer of financial interest, sale treatment not achieved	(520)	(757)
Bank | RMBS | Other assets
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Assets, transfer of financial interest, sale treatment not achieved	0	257
Bank | RMBS | Other liabilities
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Liability to SPE, transfer of financial interest, sale treatment not achieved	0	(257)
Bank | Other asset-backed financings | Trading assets
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Assets, transfer of financial interest, sale treatment not achieved	366	557
Bank | Other asset-backed financings | Other assets
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Assets, transfer of financial interest, sale treatment not achieved	154	200
Bank | Other asset-backed financings | Other liabilities
Carrying amounts of transferred financial assets and liabilities where sale treatment not achieved
Liability to SPE, transfer of financial interest, sale treatment not achieved	SFr (520)	SFr (757)

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+ References

No definition available.

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- Definition

Carrying amount of financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

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X

- Definition

Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(ii)
-URI https://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

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