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Other assets and other liabilities (Details 2) - CHF (SFr) SFr in Millions | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Right-of-use assets [Abstract] |  |  |
Premises, equipment and right-of-use assets | SFr 7,448 | SFr 7,390 | SFr 7,305
Bank |  |  |
Right-of-use assets [Abstract] |  |  |
Premises, equipment and right-of-use assets | SFr 6,302 |  | SFr 6,140

X
- References No definition available. + Details
Name: | cs_PremisesEquipmentAndRightofuseAssets
Namespace Prefix: | cs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | cs_RightofuseAssetsAbstract
Namespace Prefix: | cs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=cs_ConsolidatedBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |