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CECL (Details 16) - CHF (SFr) SFr in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Other financial assets, held at amortized cost, Allowance for Credit Loss [Line Items] |  |  |  |  |
Purchases | SFr 230 | SFr 151 | SFr 32 | SFr 381 | SFr 32
Bank |  |  |  |  |
Other financial assets, held at amortized cost, Allowance for Credit Loss [Line Items] |  |  |  |  |
Purchases |  |  |  | SFr 381 | SFr 32

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