| Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Profit Loss | 4,113 | 4,283 | 6,211 | 7,102 | 7,270 | - | - |
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| Adjustments For Depreciation And Amortisation Expense And Impairment Loss Reversal Of Impairment Loss Recognised In Profit Or Loss | - | - | - | 1,875 | 1,845 | - | - |
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| Adjustments For Impairment Loss Reversal Of Impairment Loss Recognised In Profit Or Loss Loans And Advances | 117 | 78 | 695 | -148 | 29 | - | - |
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| Share of net (profits) / loss of associates and joint ventures and impairment related to associates | 528 | 45 | 84 | 105 | 32 | - | - |
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| Adjustments For Deferred Tax Expense | 374 | 460 | 355 | 432 | 491 | - | - |
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| Other Adjustments For Which Effects Are Investing Cash Flow | -49 | 220 | -698 | -230 | -1,515 | - | - |
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| Net loss / (gain) from financing activities | -4,829 | 6,506 | 3,246 | 100 | -16,587 | - | - |
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| Other net adjustments | -1,092 | 862 | -8,061 | 3,790 | 5,792 | - | - |
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| Adjustments For Due From To Banks | 3,504 | -4,336 | 3,586 | 2,148 | -1,088 | - | - |
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| Adjustments For Decrease Increase In Reverse Repurchase Agreements And Cash Collateral On Securities Lent | - | - | - | - | - | -3,503 | -23,884 |
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| Adjustments For Increase Decrease In Reverse Repurchase Agreements And Cash Collateral On Securities Borrowed | - | - | - | - | - | -2,014 | -552 |
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| Adjustments For Cash Collateral On Derivative Instruments | -1,449 | 2,842 | -3,486 | -3,311 | 73 | - | - |
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| Adjustments For Decrease Increase In Loans And Advances To Customers | -4,152 | -3,205 | -33,897 | -26,943 | - | - | - |
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| Adjustments For Increase Decrease In Deposits From Customers | 7,931 | 23,399 | 52,831 | 29,349 | - | - | - |
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| Adjustments For Decrease Increase In Financial Assets And Financial Liabilities Held For Trading And Derivative Financial Instruments | 11,093 | -18,873 | 11,326 | -10,635 | 8,173 | - | - |
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| Adjustments For Decrease Increase In Brokerage Receivables And Brokerage Payables | 11,432 | -2,347 | -5,199 | 8,115 | 6,019 | - | - |
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| Adjustments For Decrease Increase In Other Financial Assets And Other Financial Liabilities | 10,902 | 126 | 392 | 19,793 | 5,557 | - | - |
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| Other Adjustments To Reconcile Profit Loss | 1,377 | -537 | -1,213 | 2,617 | -437 | - | - |
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| Income Taxes Paid Refund | 888 | 741 | 919 | 1,026 | 1,495 | - | - |
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| Cash Flows From Used In Operating Activities | 27,744 | 18,805 | 36,581 | 30,563 | 17,286 | - | - |
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| Purchase of subsidiaries, business, associates and intangible assets | 287 | 26 | 46 | 1 | 3 | - | - |
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| Proceeds From Sale Of Subsidiaries Associates And Intangible Assets Classified As Investing Activities | 137 | 114 | 674 | 593 | 1,729 | - | - |
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| Puchase Of Property Equipment Software Classified As Investing Activities | 1,473 | 1,401 | 1,573 | 1,581 | 1,478 | - | - |
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| Proceeds From Sales Of Property Equipment Software Classified As Investing Activities | 114 | 11 | 364 | 295 | 161 | - | - |
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| Net Redemption Purchase Of Financial Assets Measured At Fair Value Through Other Comprehensive Income | - | - | - | - | - | -30 | 3 |
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| Purchase Of Debt Securities Measured At Amortized Cost | - | - | - | - | - | 14,244 | 5,962 |
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| Disposal And Redemption Of Debt Securities Measured At Amortized Cost | - | - | - | - | - | 10,435 | 8,384 |
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| Cash Flows From Used In Investing Activities | 1,951 | 264 | -33 | 495 | -1,274 | - | - |
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| Repayment Of Swiss National Bank Funding | - | - | - | - | - | 56,516 | 42,587 |
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| Net Short Term Debt Issued Repaid | 53 | - | 23,845 | - | -3 | - | - |
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| Net Movement In Treasury Shares And Own Equity Derivative Activity | 1,431 | 1,559 | 1,387 | 3,341 | 6,006 | 2,779 | 2,923 |
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| Dividends Paid To Equity Holders Of Parent Classified As Financing Activities | 3,098 | 3,250 | 3,848 | 4,539 | 4,200 | - | - |
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| Proceeds From Issue Of Bonds Notes And Debentures | 54,726 | 59,199 | 72,273 | 98,619 | 79,457 | - | - |
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| Repayments Of Bonds Notes And Debentures | 44,344 | 68,883 | 83,825 | 79,799 | 67,670 | - | - |
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| Inflows Of Cash From Securities Financing Transactions Measured At Amortized Cost | - | - | - | - | - | - | 6,273 |
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| Outflows Of Cash From Securities Financing Transactions Measured At Amortized Cost | - | - | - | - | - | - | 4,740 |
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| Other Inflows Outflows Of Cash Classified As Financing Activities | - | - | - | 20 | - | - | - |
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| Cash Flows From Used In Financing Activities | 4,098 | -2,186 | 15,336 | 16,212 | 884 | - | - |
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| Increase Decrease In Cash And Cash Equivalents Before Effect Of Exchange Rate Changes | 22,789 | 6,961 | 42,573 | 39,630 | 8,824 | - | - |
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| Effect Of Exchange Rate Changes On Cash And Cash Equivalents | -234 | 1,258 | 11,053 | -1,151 | -1,196 | - | - |
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| Interest Received Classified As Operating Activities | 7,720 | 15,344 | 11,929 | 11,170 | 15,730 | - | - |
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| Interest Paid Classified As Operating Activities | 4,719 | 10,800 | 6,414 | 4,802 | 8,315 | - | - |
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| Dividends Received Classified As Operating Activities | 2,322 | 3,145 | 1,901 | 2,531 | 1,907 | - | - |
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