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Note 26 Retained earnings, revaluation reserves and other reserves (Details) - EUR (€)
€ in Millions
Jun. 30, 2022
Dec. 31, 2021
Disclosure of Retained earnings and other reserves [Line Items]    
Retained earnings € 32,559 € 31,841
Revaluation reserves 0 0
Other reserves 1,872 (1,857)
Total retained earnings revaluation reserves and other reserves € 34,431 € 29,984