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Note 39 - Administration Costs - Average Number Of Employees By Geographical Area - Average Employees (Details) - Employee
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
BBVA Group [Member] | Male    
Average BBVA S A Employees Line Items    
Average Number Of Employees 60,623 60,873
BBVA Group [Member] | Female    
Average BBVA S A Employees Line Items    
Average Number Of Employees 71,258 72,051
BBVA, S.A. [Member] | Male    
Average BBVA S A Employees Line Items    
Average Number Of Employees 13,178 13,655
BBVA, S.A. [Member] | Female    
Average BBVA S A Employees Line Items    
Average Number Of Employees 13,178 13,372