TFA - Carrying amounts for sale treatmen not achieved (Details 5) - CHF (SFr) SFr in Millions	Jun. 30, 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	500	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	178	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	(678)	(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	500	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	178	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 (678)	SFr (757)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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 http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

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- 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 http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

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