Restricted financial assets (Tables)	12 Months Ended
Restricted financial assets (Tables)	Dec. 31, 2022
Entity [Table]
Disclosure of restricted financial assets [text block]	Restricted financial assets USD m 31.12.22 31.12.21 Restricted financial assets of which: assets pledged as collateral that may be sold or repledged by counterparties Restricted financial assets of which: assets pledged as collateral that may be sold or repledged by counterparties Financial assets pledged as collateral Financial assets at fair value held for trading 57,377 36,742 63,725 43,397 Loans and advances to customers 1 15,195 18,160 Financial assets at fair value not held for trading 1,509 1,220 961 961 Debt securities classified as Other financial assets measured at amortized cost 3,432 2,685 2,234 1,870 Total financial assets pledged as collateral 77,513 85,079 Other restricted financial assets Loans and advances to banks 3,689 3,408 Financial assets at fair value held for trading 162 392 Cash collateral receivables on derivative instruments 5,155 4,747 Loans and advances to customers 1,127 1,237 Financial assets at fair value not held for trading 14,478 22,765 Financial assets measured at fair value through other comprehensive income 1,842 894 Other 859 97 Total other restricted financial assets 27,312 33,540 Total financial assets pledged and other restricted financial assets 2 104,825 118,619 1 Mainly related to mortgage loans that serve as collateral for existing liabilities toward Swiss central mortgage institutions and for existing covered bond issuances. Of these pledged mortgage loans, approximately USD 3.1 bn as of 31 December 2022 (31 December 2021: approximately USD 2.7 bn) could be withdrawn or used for future liabilities or covered bond issuances without breaching existing collateral requirements. 2 Does not include assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes (31 December 2022: USD 5.9 bn; 31 December 2021: USD 4.4 bn).
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition Explanatory	Transferred financial assets subject to continued recognition in full USD m 31.12.22 31.12.21 Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Financial assets at fair value held for trading that may be sold or repledged by counterparties 36,742 16,470 43,397 17,687 relating to securities lending and repurchase agreements in exchange for cash received 16,756 16,470 17,970 17,687 relating to securities lending agreements in exchange for securities received 18,908 24,146 relating to other financial asset transfers 1,078 1,281 Financial assets at fair value not held for trading that may be sold or repledged by counterparties 1,220 1,050 961 898 Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties 2,685 2,302 1,870 1,725 Total financial assets transferred 40,647 19,822 46,227 20,311
Disclosure Of Off Balance Sheet Assets Received Table [Text Block]	Off-balance sheet assets received USD m 31.12.22 31.12.21 Fair value of assets received that can be sold or repledged 434,023 497,828 received as collateral under reverse repurchase, securities borrowing and lending arrangements, derivative and other transactions 1 418,847 483,426 received in unsecured borrowings 15,175 14,402 Thereof sold or repledged 2 331,805 367,440 in connection with financing activities 288,752 319,176 to satisfy commitments under short sale transactions 29,515 31,688 in connection with derivative and other transactions 1 13,538 16,575 1 Includes securities received as initial margin from its clients that UBS is required to remit to central counterparties, brokers and deposit banks through its exchange -traded derivative clearing and execution services. 2 Does not include off-balance sheet securities (31 December 2022: USD 9.9 bn; 31 December 2021: USD 12.7 bn) placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes for which there are no associated liabilities or contingent liabilities.
UBS AG
Entity [Table]
Disclosure of restricted financial assets [text block]	Restricted financial assets USD m 31.12.22 31.12.21 Restricted financial assets of which: assets pledged as collateral that may be sold or repledged by counterparties Restricted financial assets of which: assets pledged as collateral that may be sold or repledged by counterparties Financial assets pledged as collateral Financial assets at fair value held for trading 57,435 36,742 63,834 43,397 Loans and advances to customers 1 15,195 18,160 Financial assets at fair value not held for trading 1,509 1,220 961 961 Debt securities classified as Other financial assets measured at amortized cost 3,432 2,685 2,234 1,870 Total financial assets pledged as collateral 77,571 85,188 Other restricted financial assets Loans and advances to banks 3,689 3,408 Financial assets at fair value held for trading 162 392 Cash collateral receivables on derivative instruments 5,155 4,747 Loans and advances to customers 1,127 1,237 Financial assets at fair value not held for trading 14,090 22,328 Financial assets measured at fair value through other comprehensive income 1,842 894 Other 859 97 Total other restricted financial assets 26,924 33,104 Total financial assets pledged and other restricted financial assets 2 104,495 118,292 1 Mainly related to mortgage loans that serve as collateral for existing liabilities toward Swiss central mortgage institutions and for existing covered bond issuances. Of these pledged mortgage loans, approximately USD 3.1 bn as of 31 December 2022 (31 December 2021: approximately USD 2.7 bn) could be withdrawn or used for future liabilities or covered bond issuances without breaching existing collateral requirements. 2 Does not include assets placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes (31 December 2022: USD 5.9 bn; 31 December 2021: USD 4.4 bn).
Disclosure Of Financial Assets Transferred During Period Which Do Not Qualify For Derecognition Explanatory	Transferred financial assets subject to continued recognition in full USD m 31.12.22 31.12.21 Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Carrying amount of transferred assets Carrying amount of associated liabilities recognized on balance sheet Financial assets at fair value held for trading that may be sold or repledged by counterparties 36,742 16,470 43,397 17,687 relating to securities lending and repurchase agreements in exchange for cash received 16,756 16,470 17,970 17,687 relating to securities lending agreements in exchange for securities received 18,908 24,146 relating to other financial asset transfers 1,078 1,281 Financial assets at fair value not held for trading that may be sold or repledged by counterparties 1,220 1,050 961 898 Debt securities classified as Other financial assets measured at amortized cost that may be sold or repledged by counterparties 2,685 2,302 1,870 1,725 Total financial assets transferred 40,647 19,822 46,227 20,311
Disclosure Of Off Balance Sheet Assets Received Table [Text Block]	Off-balance sheet assets received USD m 31.12.22 31.12.21 Fair value of assets received that can be sold or repledged 434,023 497,828 received as collateral under reverse repurchase, securities borrowing and lending arrangements, derivative and other transactions 1 418,847 483,426 received in unsecured borrowings 15,175 14,402 Thereof sold or repledged 2 331,805 367,440 in connection with financing activities 288,752 319,176 to satisfy commitments under short sale transactions 29,515 31,688 in connection with derivative and other transactions 1 13,538 16,575 1 Includes securities received as initial margin from its clients that UBS AG is required to remit to central counterparties, brokers and deposit banks through its exchange -traded derivative clearing and execution services. 2 Does not include off-balance sheet securities (31 December 2022: USD 9.9 bn; 31 December 2021: USD 12.7 bn) placed with central banks related to undrawn credit lines and for payment, clearing and settlement purposes for which there are no associated liabilities or contingent liabilities.