v3.26.1
Other operating expenses - Summary of other operating expenses (Details) - EUR (€)
€ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Expenses by nature [abstract]    
Promotional and client acquisition costs € 231 € 206
IT related expenses (excluding outsourcing and subcontracting) 408 382
Outsourcing and subcontracting 344 327
Facilities 133 137
Market data services 78 73
Advisory fees 126 135
Audit and supervisory fees 77 74
Indirect taxes 157 167
Regulatory costs 402 439
Depreciation and impairment of property and equipment 219 218
Amortisation and impairment of intangible assets 117 111
Additions and releases of provisions 87 150
Other 62 67
Other operating expense € 2,440 € 2,485