v3.25.4
Employee Benefits - Additional Information (Detail: Text Values)
€ in Millions
 12 Months Ended
Dec. 31, 2025
EUR (€)
staff
country
transaction
shares
Dec. 31, 2024
EUR (€)
Global Share Purchase Plan    
Period employees are eligible to purchase shares in employee share ownership plan 1 year  
Ratio of shares employer matches per share acquired in employee share ownership plan 1  
Maximum number of shares employer matches in employee share ownership plan | shares 10  
Total staff enrolled in employee share ownership plan in current cycle | staff 12,775  
Total countries enrolled in employee share ownership plan in current cycle | country 21  
Liabilities from share-based payment transactions € 20 € 14
Grant volume of outstanding share awards 1,100 1,000
Of which:    
Recognized as compensation expense 800 800
Not yet recognized 300 200
DWS Share based Plans    
Fair value of DWS share-based awards 64 74
of which: recognized in the income statement 48 63
of which: relate to fully vested awards 14 40
of which: related to total unrecognized share-based plans € 16 12
Historical period used for share price volatility with no liquid market 5 years  
Unfunded US Medicare Plan included in US Total defined benefit obligation € 105 € 120
US defined benefit pension funding ratio excluding Medicare in Percent 96.00% 96.00%
Total defined benefit obligation for post-employment medical plans € 126 € 142
Range of defined benefit obligation by plan assets in percent    
Bottom of Range 90.00%  
Top of Range 100.00%  
Amount claimed by the Group which represents the benefits paid from the Banks assets on behalf of the trust € 540 520
Positive impact on Other Comprehensive Income due to the refinement of methodology for estimating increases to pensions   100
Other assets recognized in Net asset (liability) recognized 1,200 1,300
Other liabilities recognized in Net (asset) liability recognized € 261 317
Number of buy-in transactions with third-party insurers | transaction 5  
Buy-in transactions with a third party insurer to de-risk exposure to the UK defined benefit pension schemes   1,100
Negative impact on Other Comprehensive Income of the recognition of the insurance policies as qualifying plan assets   120
Buy-in transactions in the UK with third-party insurers protecting the Group from movements in defined benefit obligations € 2,600  
Derivative transactions with Group entities with positive market value included in plan assets € 630 € 810
Expected changes in the fair value of plan assets contains simulated impact on the biggest plans in Germany, UK, US, Channel Islands, Switzerland and Belgium 99.00%  
Period of expected longevity increase 1 year 1 year