Post-employment benefit plans (Tables)	12 Months Ended
Post-employment benefit plans (Tables)	Dec. 31, 2024
Disclosure Of Post-employment Benefit Plans Tables [Line Items]
Disclosure Of Defined Benefit Plans Explanatory	Net asset / liability of defined benefit plans USD m Major Swiss plans 31.12.24 31.12.23 1 Defined benefit obligation at the beginning of the year 44,922 22,272 Defined benefit obligation recognized upon the acquisition of the Credit Suisse Group 15,142 Current service cost 763 567 Interest expense 564 680 Plan participant contributions 446 370 Remeasurements 4,017 4,446 of which: actuarial (gains) / losses due to changes in demographic assumptions 25 76 of which: actuarial (gains) / losses due to changes in financial assumptions 2,723 2,886 of which: experience (gains) / losses 2 1,269 1,484 Past service cost related to plan amendments 0 245 Curtailments (104) (29) Benefit payments (2,665) (2,309) Termination benefits 6 21 Foreign currency translation (3,332) 3,516 Defined benefit obligation at the end of the year 44,617 44,922 of which: amounts owed to active members 24,576 24,007 of which: amounts owed to deferred members 0 0 of which: amounts owed to retirees 20,041 20,915 of which: funded plans 44,617 44,922 of which: unfunded plans 0 0 Fair value of plan assets at the beginning of the year 54,404 30,119 Fair value of plan assets recognized upon the acquisition of the Credit Suisse Group 18,914 Return on plan assets excluding interest income 2,596 1,234 Interest income 700 916 Employer contributions 811 690 Plan participant contributions 446 370 Benefit payments (2,665) (2,309) Administration expenses, taxes and premiums paid (27) (19) Other movements 0 2 Foreign currency translation (4,024) 4,485 Fair value of plan assets at the end of the year 52,241 54,404 Surplus / (deficit) 7,624 9,482 Asset ceiling effect at the beginning of the year 9,394 7,848 Asset ceiling effect recognized upon the acquisition of the Credit Suisse Group 3,695 Interest expense on asset ceiling effect 128 225 Asset ceiling effect excluding interest expense and foreign currency translation on asset ceiling effect (1,237) (3,336) Foreign currency translation (688) 963 Asset ceiling effect at the end of the year 7,596 9,394 Net defined benefit asset / (liability) of major Swiss plans 28 88 Other plans Net defined benefit asset / (liability) of other plans 3 131 205 Total net defined benefit asset / (liability) 159 293 of which: Net defined benefit asset 922 1,088 of which: Net defined benefit liability 4 (763) (795) 1 Including Credit Suisse from 31 May 2023. 2 Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation and reflect the effects of differences between the previous actuarial assumptions and what has actually occurred. 3 Mainly relates to UK, US and German plans. 4 Refer to Note 19c. Income statement – expenses related to defined benefit plans 1 USD m For the year ended Major Swiss plans 31.12.24 31.12.23 2 Current service cost 763 567 Interest expense related to defined benefit obligation 564 680 Interest income related to plan assets (700) (916) Interest expense on asset ceiling effect 128 225 Administration expenses, taxes and premiums paid 27 19 Past service cost related to plan amendments 0 245 Curtailments (104) (29) Termination benefits 6 21 Other movements 3 3 (2) Net periodic expenses recognized in net profit for major Swiss plans 687 811 Other plans Net periodic expenses recognized in net profit for other plans 44 36 Total net periodic expenses recognized in net profit 731 847 1 Refer to Note 7. 2 Including Credit Suisse from 31 May 2023. 3 Includes differences between actual and estimated performance award accruals. Other comprehensive income – gains / (losses) on defined benefit plans USD m For the year ended Major Swiss plans 31.12.24 31.12.23 1 Remeasurement of defined benefit obligation (4,017) (4,446) of which: change in discount rate assumption (2,846) (3,278) of which: change in rate of salary increase assumption (227) (74) of which: change in rate of pension increase assumption 0 0 of which: change in rate of interest credit on retirement savings assumption 349 479 of which: change in life expectancy 0 0 of which: change in other actuarial assumptions (24) (88) of which: experience gains / (losses) 2 (1,269) (1,484) Return on plan assets excluding interest income 2,596 1,234 Asset ceiling effect excluding interest expense and foreign currency translation 1,237 3,336 Total gains / (losses) recognized in other comprehensive income for major Swiss plans (184) 124 Other plans Total gains / (losses) recognized in other comprehensive income for other plans 3 (123) (15) Total gains / (losses) recognized in other comprehensive income 4 (307) 110 1 Including Credit Suisse from 31 May 2023. 2 Experience (gains) / losses are a component of actuarial remeasurements of the defined benefit obligation and reflect the effects of differences between the previous actuarial assumptions and what has actually occurred. 3 Mainly relates to UK, US and German plans. 4 Refer to the “Statement of comprehensive income”.
Disclosure of maturity analysis of expected benefit payments [text block]	Major Swiss defined benefit plans 31.12.24 31.12.23 Duration of the defined benefit obligation (in years) 1 13.3 13.1 Maturity analysis of benefits expected to be paid USD m Benefits expected to be paid within 12 months 2,911 3,056 Benefits expected to be paid between 1 and 3 years 4,812 5,149 Benefits expected to be paid between 3 and 6 years 7,231 7,671 Benefits expected to be paid between 6 and 11 years 11,203 12,080 Benefits expected to be paid between 11 and 16 years 9,621 10,513 Benefits expected to be paid in more than 16 years 30,398 34,221 1 The duration of the defined benefit obligation represents a weighted average across the UBS and Credit Suisse plans.
Disclosure of actuarial assumptions [text block]	Significant actuarial assumptions of major Swiss defined benefit plans 1 In % 31.12.24 31.12.23 Discount rate 0.92 1.48 Rate of salary increase 2.80 2.36 Rate of pension increase 0.00 0.00 Rate of interest credit on retirement savings 2.02 2.54 1 Represents weighted average across the UBS and Credit Suisse plans.
Disclosure Of Sensitivity Analysis For Actuarial Assumptions Explanatory	Sensitivity analysis of significant actuarial assumptions of major Swiss defined benefit plans 1 Increase / (decrease) in defined benefit obligation USD m 31.12.24 31.12.23 Discount rate Increase by 50 basis points (2,462) (2,365) Decrease by 50 basis points 2,790 2,668 Rate of salary increase Increase by 50 basis points 255 248 Decrease by 50 basis points (256) (246) Rate of pension increase Increase by 50 basis points 1,947 1,894 Decrease by 50 basis points – 2 – 2 Rate of interest credit on retirement savings Increase by 50 basis points 374 334 Decrease by 50 basis points (374) (334) Life expectancy Increase in longevity by one additional year 1,381 1,315 1 The sensitivity analyses are based on a change in one assumption while holding all other assumptions constant, so that interdependencies between the assumptions are excluded. 2 As the assumed rate of pension increase was 0 % as of 31 December 2024 and as of 31 December 2023, a downward change in assumption is not applicable.
Disclosure of composition and fair value of plan assets [text block]	Composition and fair value of Swiss defined benefit plan assets 31.12.24 31.12.23 Fair value Plan asset allocation % Fair value Plan asset allocation % USD m Quoted in an active market Other Total Quoted in an active market Other Total Cash and cash equivalents 911 0 911 2 1,205 0 1,205 2 Equity securities Domestic 0 0 0 0 0 24 24 0 Foreign 0 1,425 1,425 3 0 2,132 2,132 4 Bonds Domestic, AAA to BBB– 156 0 156 0 100 0 100 0 Foreign, AAA to BBB– 0 0 0 0 51 0 51 0 Real estate / property Domestic 0 5,967 5,967 11 0 6,195 6,195 11 Foreign 0 1,086 1,086 2 0 1,017 1,017 2 Investment funds Equity Domestic 1,300 0 1,300 2 1,376 0 1,376 3 Foreign 8,520 2,072 10,592 20 8,317 2,196 10,513 19 Bonds 1 Domestic, AAA to BBB– 6,921 0 6,921 13 7,952 0 7,952 15 Domestic, below BBB– 9 0 9 0 1 0 1 0 Foreign, AAA to BBB– 12,886 0 12,886 25 13,497 0 13,497 25 Foreign, below BBB– 1,393 0 1,393 3 1,249 0 1,249 2 Real estate Domestic 1,938 0 1,938 4 1,906 0 1,906 4 Foreign 451 117 568 1 537 79 616 1 Other 1,396 3,383 4,780 9 1,960 3,373 5,333 10 Other investments 475 1,833 2,308 4 667 569 1,236 2 Total fair value of plan assets 36,357 15,884 52,241 100 38,817 15,586 54,404 100 31.12.24 31.12.23 Total fair value of plan assets 52,241 54,404 of which: Investments in UBS instruments 2 Bank accounts at UBS 926 666 UBS debt instruments 238 211 UBS shares 64 72 Securities lent to UBS 3 956 827 Property occupied by UBS 73 108 Derivative financial instruments, counterparty UBS 3 (126) 534 1 The bond credit ratings are primarily based on S&P’s credit ratings. Ratings AAA to BBB– and below BBB– represent investment grade and non-investment grade ratings, respectively. In cases where credit ratings from other rating agencies were used, these were converted to the equivalent rating in S&P’s rating classification. 2 Bank accounts at UBS encompass accounts in the name of the Swiss pension funds. The other positions disclosed in the table encompass both direct investments in UBS instruments and indirect investments, i.e. those made through funds that the pension fund invests in. 3 Securities lent to UBS and derivative financial instruments are presented gross of any collateral. Securities lent to UBS were fully covered by collateral as of 31 December 2024 and 31 December 2023. Net of collateral, derivative financial instruments amounted to negative USD 70 m as of 31 December 2024 (31 December 2023: negative USD 33 m).
Actuarial Assumption Of Mortality Rates [Member]
Disclosure Of Post-employment Benefit Plans Tables [Line Items]
Disclosure of actuarial assumptions [text block]	aged 65 aged 45 Swiss mortality table: BVG 2020 G with CMI 2023 projections 1 31.12.24 31.12.23 31.12.24 31.12.23 Life expectancy at age 65 for a male member currently 21.9 21.8 23.5 23.5 Life expectancy at age 65 for a female member currently 23.6 23.5 25.2 25.1 1 In 2023, BVG 2020 G with CMI 2022 projections was used.