XML 137 R129.htm IDEA: XBRL DOCUMENT v3.21.2
Note 17 Other Intangible Assets (Details) - EUR (€)
Jun. 30, 2021
Dec. 31, 2020
Other intangible assets [Line Items]    
Other intangible assets € 1,414,000,000 € 1,435,000,000
Computer software [member]    
Other intangible assets [Line Items]    
Other intangible assets 1,223,000,000 1,202,000,000
Intangible Assets With Indefinite Useful Life    
Other intangible assets [Line Items]    
Other intangible assets 12,000,000 12,000,000
Intangible assets with definite useful life [Member]    
Other intangible assets [Line Items]    
Other intangible assets € 180,000,000 € 221,000,000