XML 252 R230.htm IDEA: XBRL DOCUMENT v3.25.4
Related party transactions (Details 1) - shares
shares in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Stockholders Sterrebeeck B V [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 1,809,583 1,809,583 1,809,583
Ownership interest common shares, percentage 47.40% 47.40% 47.40%
Ownership interest, preferred shares 1,733,644 1,733,644 1,733,644
Ownership interest preferred shares, percentage 47.10% 47.10% 47.10%
Ownership interest, total shares 3,543,227 3,543,227 3,543,227
Ownership interest total shares, total 47.30% 47.30% 47.30%
Stockholders Grupo Empresarial Santander S L [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 1,627,891 1,627,891 1,627,891
Ownership interest common shares, percentage 42.60% 42.60% 42.60%
Ownership interest, preferred shares 1,539,863 1,539,863 1,539,863
Ownership interest preferred shares, percentage 41.90% 41.90% 41.90%
Ownership interest, total shares 3,167,755 3,167,754 3,167,754
Ownership interest total shares, total 42.20% 42.20% 42.20%
Stockholders Banco Santander S A [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 2,696 2,696 2,696
Ownership interest common shares, percentage 0.10% 0.10% 0.10%
Ownership interest, preferred shares  
Ownership interest preferred shares, percentage
Ownership interest, total shares 2,696 2,696 2,696
Ownership interest total shares, total
Stockholders Directors [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 3,083 2,828  
Ownership interest common shares, percentage 0.10% 0.10%  
Ownership interest, preferred shares 3,083 2,828  
Ownership interest preferred shares, percentage 0.10% 0.10%  
Ownership interest, total shares 6,167 5,656  
Ownership interest total shares, total 0.10% 0.10%  
Stockholders Other [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 361,775 356,245 348,148
Ownership interest common shares, percentage 9.50% 9.30% 9.10%
Ownership interest, preferred shares 389,579 384,050 375,952
Ownership interest preferred shares, percentage 10.60% 10.40% 10.20%
Ownership interest, total shares 751,354 740,295 724,100
Ownership interest total shares, total 10.00% 9.90% 9.80%
Stockholders Total [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 3,805,028 3,799,243 3,791,502
Ownership interest common shares, percentage 99.60% 99.50% 99.30%
Ownership interest, preferred shares 3,666,169 3,660,385 3,652,643
Ownership interest preferred shares, percentage 99.60% 99.50% 99.30%
Ownership interest, total shares 7,471,199 7,459,628 7,444,145
Ownership interest total shares, total 99.60% 99.50% 99.30%
Treasury Share [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 13,666 19,452 27,193
Ownership interest common shares, percentage 0.40% 0.50% 0.70%
Ownership interest, preferred shares 13,666 19,452 27,193
Ownership interest preferred shares, percentage 0.40% 0.50% 0.70%
Ownership interest, total shares 27,332 38,904 54,386
Ownership interest total shares, total 0.40% 0.50% 0.70%
Stockholders And Treasury Shares Total [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 3,818,694 3,818,695 3,818,695
Ownership interest common shares, percentage 100.00% 100.00% 100.00%
Ownership interest, preferred shares 3,679,835 3,679,837 3,679,836
Ownership interest preferred shares, percentage 100.00% 100.00% 100.00%
Ownership interest, total shares 7,498,531 7,498,532 7,498,531
Ownership interest total shares, total 100.00% 100.00% 100.00%
Stockholders Free Float [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares 361,775 356,245 348,148
Ownership interest common shares, percentage 9.50% 9.30% 10.10%
Ownership interest, preferred shares 389,579 384,050 375,952
Ownership interest preferred shares, percentage 10.60% 10.40% 10.20%
Ownership interest, total shares 751,354 740,295 724,100
Ownership interest total shares, total 10.00% 9.90% 9.70%
Administrators [Member]      
IfrsStatementLineItems [Line Items]      
Ownership interest, common shares     3,184
Ownership interest common shares, percentage     0.10%
Ownership interest, preferred shares     3,184
Ownership interest preferred shares, percentage     0.10%
Ownership interest, total shares     6,368
Ownership interest total shares, total     0.10%