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General and administrative expenses (Details) - CHF (SFr)
SFr in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
General and Administrative Expenses      
Occupancy expenses SFr 973 SFr 979 SFr 982
IT, machinery, etc. 1,964 1,549 1,428
Provisions and losses 1,581 1,491 1,261
Travel and entertainment 232 149 152
Professional services 2,143 1,996 1,546
Communication and market data services 539 520 512
Amortization and impairment of other intangible assets 4 8 8
Other 346 467 634
General and administrative expenses 7,782 7,159 6,523
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component (187) (166) (159)
Bank      
General and Administrative Expenses      
Occupancy expenses 889 893 883
IT, machinery, etc. 1,591 1,218 1,129
Provisions and losses 1,529 1,489 1,253
Travel and entertainment 206 127 134
Professional services 3,985 3,625 3,025
Communication and market data services 473 458 458
Amortization and impairment of other intangible assets 4 8 8
Other 661 763 1,072
General and administrative expenses 9,338 8,581 SFr 7,962
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component SFr 16 SFr (10)