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Commissions and fees (Details) - CHF (SFr) SFr in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Commissions and fees |  |  |
Commissions and fees | SFr 5,356 | SFr 8,861 | SFr 13,180
Lending business |  |  |
Commissions and fees |  |  |
Commissions and fees | 663 | 1,431 | 1,870
Investment and portfolio management |  |  |
Commissions and fees |  |  |
Commissions and fees | 2,478 | 3,028 | 3,401
Other securities business |  |  |
Commissions and fees |  |  |
Commissions and fees | 67 | 61 | 59
Fiduciary business |  |  |
Commissions and fees |  |  |
Commissions and fees | 2,545 | 3,089 | 3,460
Underwriting |  |  |
Commissions and fees |  |  |
Commissions and fees | 90 | 560 | 2,560
Brokerage |  |  |
Commissions and fees |  |  |
Commissions and fees | 1,281 | 2,265 | 3,088
Underwriting and brokerage |  |  |
Commissions and fees |  |  |
Commissions and fees | 1,371 | 2,825 | 5,648
Other services |  |  |
Commissions and fees |  |  |
Commissions and fees | SFr 777 | SFr 1,516 | SFr 2,202

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