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Insurance contracts linked to pensions (Tables)
12 Months Ended
Dec. 31, 2021
Disclosure of types of insurance contracts [abstract]  
Schedule of insurance contracts linked to pensions
The detail of Insurance contracts linked to pensions in the consolidated balance sheets is as follows:
EUR million
202120202019
Assets relating to insurance contracts covering post-employment benefit plan obligations:
Banco Santander, S.A.149 174 192 
149 174 192