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Note 17 Other Intangible Assets (Details) - EUR (€)
€ in Millions
Jun. 30, 2022
Dec. 31, 2021
Other intangible assets [Line Items]    
Other intangible assets € 1,413 € 1,379
Computer software [member]    
Other intangible assets [Line Items]    
Other intangible assets 1,349 1,239
Intangible Assets With Indefinite Useful Life    
Other intangible assets [Line Items]    
Other intangible assets 11 12
Intangible assets with definite useful life [Member]    
Other intangible assets [Line Items]    
Other intangible assets € 53 € 128