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Financial risk review - Schedule of Bank's Liquid Assets by Geographical Location (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Disclosure of financial assets [line items] |  |
Total | $ 1,999 | $ 1,269
Cash and due from banks |  |
Disclosure of financial assets [line items] |  |
Total | 1,987 | 1,191
Securities at amortized cost |  |
Disclosure of financial assets [line items] |  |
Total | 12 | 78
Total |  |
Disclosure of financial assets [line items] |  |
Total | 1,999 | 1,269
United States of America | Cash and due from banks |  |
Disclosure of financial assets [line items] |  |
Total | 1,904 | 1,151
United States of America | Securities at amortized cost |  |
Disclosure of financial assets [line items] |  |
Total | 0 | 43
United States of America | Total |  |
Disclosure of financial assets [line items] |  |
Total | 1,904 | 1,194
Latin America | Cash and due from banks |  |
Disclosure of financial assets [line items] |  |
Total | 7 | 15
Latin America | Securities at amortized cost |  |
Disclosure of financial assets [line items] |  |
Total | 0 | 0
Latin America | Total |  |
Disclosure of financial assets [line items] |  |
Total | 7 | 15
Other countries | Cash and due from banks |  |
Disclosure of financial assets [line items] |  |
Total | 1 | 0
Other countries | Securities at amortized cost |  |
Disclosure of financial assets [line items] |  |
Total | 0 | 0
Other countries | Total |  |
Disclosure of financial assets [line items] |  |
Total | 1 | 0
Multilateral | Cash and due from banks |  |
Disclosure of financial assets [line items] |  |
Total | 75 | 25
Multilateral | Securities at amortized cost |  |
Disclosure of financial assets [line items] |  |
Total | 12 | 35
Multilateral | Total |  |
Disclosure of financial assets [line items] |  |
Total | $ 87 | $ 60

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