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Other operating expenses (Tables)
12 Months Ended
Dec. 31, 2023
Other operating expenses [Abstract]  
Summary of other operating expenses
Other operating expenses
in EUR million
2023
2022
2021
Regulatory costs
1,042
1,250
1,265
Audit and non-audit services
36
31
34
IT related expenses
948
818
781
Advertising and public relations
369
331
305
External advisory fees
299
310
301
Office expenses
289
273
281
Travel and accommodation expenses
125
91
52
Contributions and subscriptions
122
109
112
Postal charges
36
31
38
Depreciation of property and equipment
461
485
573
Amortisation of intangible assets
213
226
261
(Reversals of) impairments of property and equipment
32
19
26
(Reversals of) impairments of intangible assets
6
60
95
Addition to / (unused amounts reversed of) provision for reorganisations
173
170
214
Addition to / (unused amounts reversed of) other provisions
70
117
254
Other
617
726
658
4,839
5,047
5,251