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Provision for credit losses (Details) - 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
Provision for credit losses |  |  |  |  |
Loans held at amortized cost | SFr 73 | SFr 41 | SFr (28) | SFr 114 | SFr (52)
Other financial assets held at amortized cost | 2 | (148) | 56 | (146) | 4,490
Off-balance sheet credit exposures | (11) | (3) | (53) | (14) | (69)
Provision for credit losses | 64 | (110) | (25) | (46) | 4,369
Archegos Capital Management [Member] |  |  |  |  |
Provision for credit losses |  |  |  |  |
Other financial assets held at amortized cost | SFr 0 | SFr (155) | SFr 70 | (155) | 4,500
Bank |  |  |  |  |
Provision for credit losses |  |  |  |  |
Loans held at amortized cost |  |  |  | 114 | (52)
Other financial assets held at amortized cost |  |  |  | (147) | 4,494
Off-balance sheet credit exposures |  |  |  | (14) | (69)
Provision for credit losses |  |  |  | (47) | 4,373
Bank | Archegos Capital Management [Member] |  |  |  |  |
Provision for credit losses |  |  |  |  |
Other financial assets held at amortized cost |  |  |  | SFr (155) | SFr 4,500

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- Definition Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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