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Revenue from contracts with customers (Details) - CHF (SFr) SFr in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	SFr 2,692	SFr 4,040
Other securities business [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	33	29
Underwriting [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	117	370
Brokerage [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	765	1,277
Investment Advice [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	1,308	1,578
Service, Other [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	SFr 469	SFr 786

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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-Publisher FASB
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