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Note 18 Other Intangible Assets (Details) - EUR (€)
€ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Other intangible assets [Line Items]      
Other intangible assets € 1,449 € 1,379 € 1,435
Computer software [member]      
Other intangible assets [Line Items]      
Other intangible assets 1,393 1,239 1,202
Intangible Assets With Indefinite Useful Life      
Other intangible assets [Line Items]      
Other intangible assets 13 12 12
Intangible assets with definite useful life [Member]      
Other intangible assets [Line Items]      
Other intangible assets € 43 € 128 € 221