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Note 7 Amount of payment deferral and financing with public guarantees of the Group (Details) - EUR (€)
€ in Millions
Dec. 31, 2021
Dec. 31, 2020
 [1]
Amount of payment deferral and financing with public guarantees of the Group [Line Items]    
Operations with payment deferral € 21,931 € 28,405
Operations financing with public guarantee 16,093 16,053
Total operations with payment deferral and guarantees € 38,025 € 44,458
Credit investment percentage 10.90% 12.90%
Current [Member]    
Amount of payment deferral and financing with public guarantees of the Group [Line Items]    
Operations with payment deferral € 189 € 6,536
Finished [Member]    
Amount of payment deferral and financing with public guarantees of the Group [Line Items]    
Operations with payment deferral 21,743 21,868
Number of clients [Member]    
Amount of payment deferral and financing with public guarantees of the Group [Line Items]    
Operations with payment deferral 2,188,720 2,779,964
Operations financing with public guarantee € 264,809 € 249,458
[1] (*) Figures as of December 2020 do not include the companies sold in the United States in 2021.