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Note 29 Capital ratios (Details) - EUR (€)
€ in Millions
Jun. 30, 2022
 [1]
Dec. 31, 2021
Capital ratios [Line Items]    
Eligible common equity tier 1 capital € 41,555 € 39,949
Eligible additional tier 1 capital 5,264 5,737
Eligible tier 2 capital 6,833 7,383
Risk weighted assets € 330,819 € 307,795
Common tier 1 capital ratio 12.56% 12.98%
Additional tier 1 capital ratio 1.59% 1.86%
Tier 1 capital ratio 14.15% 14.84%
Tier 2 capital ratio 2.07% 2.40%
Total capital ratio 16.22% 17.24%
[1] (*) Provisional data.