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General and administrative expenses (Details) - CHF (SFr) SFr in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
General and Administrative Expenses
Occupancy expenses	SFr 1,458	SFr 889	SFr 893
IT, machinery, etc.	2,775	1,591	1,218
Provisions and losses	1,389	1,529	1,489
Travel and entertainment	157	206	127
Professional services	4,121	3,985	3,625
Communication and market data services	423	473	458
Amortization and impairment of other intangible assets	31	4	8
Other	454	661	763
General and administrative expenses	10,808	9,338	8,581
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	SFr (33)	SFr 16	SFr (10)

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- Definition

This element represents the amortization and impairment charges of intangible assets, which are not otherwise specified in the taxonomy.

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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. This element represents information relating to general and administrative expenses.

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This element represents provisions and losses included in general and administrative expenses.

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The amount of expenses incurred in the period for information technology and data processing products and services.

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Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits.

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Amount of net occupancy expense that may include items, such as depreciation of facilities and equipment, lease expenses, property taxes and property and casualty insurance expense.

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Amount of general and administrative expense classified as other.

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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

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Expenses incurred for travel and entertainment during the period.

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