v3.26.1
Grupo Santander - Tender offer for shares of Banco Santander México, S.A., Institución de Banca Múltiple, Grupo Financiero Santander México (Details) - Banco Santander México, S.A., Institución de Banca Múltiple, Grupo Financiero Santander México
€ / shares in Units, € in Millions
2 Months Ended 8 Months Ended
Apr. 10, 2023
EUR (€)
Apr. 09, 2023
Apr. 10, 2023
EUR (€)
Dec. 31, 2023
Apr. 10, 2023
$ / shares
Apr. 10, 2023
$ / shares
Apr. 10, 2023
€ / shares
Nov. 30, 2022
Oct. 21, 2022
Disclosure of detailed information about business combination [line items]                  
Percentage of voting equity interests acquired         3.60% 3.60% 3.60%   3.76%
Ownership interest in subsidiary 99.80% 96.20%              
Consideration (in MXN/EUR per share) | (per share)           $ 24.52 € 1.20    
Consideration, in cash per American Depositary Share | $ / shares         $ 6.6876        
Expected consideration per American Depositary Share (in MXN per share) | $ / shares           $ 122.6      
Consideration paid (received)     € 300            
Increase through business combinations, reserves € 13                
Increase (decrease) through business combinations, minority interest € (313)                
Business combination, minimum acceptance percentage by Shareholders of acquiree               95.00%  
Repurchase trust, group's effective participation (in percentage)       99.98%