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Note 26 Retained earnings, revaluation reserves and other reserves (Details) - EUR (€)
€ in Millions
Jun. 30, 2023
Dec. 31, 2022
Disclosure of Retained earnings and other reserves [Line Items]    
Retained earnings € 36,379 € 32,711
Other reserves 2,250 2,345
Total retained earnings revaluation reserves and other reserves € 38,629 € 35,056