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Note 37 Income and expense from insurance and reinsurance contracts (Details) - EUR (€)
€ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Income and expense from insurance and reinsurance contracts [Line Items]    
Income arising from insurance contracts € 1,537 € 1,350
Expense arising from insurance contracts 908 909
Net income arising from insurance contracts € 629 € 441