XML 150 R133.htm IDEA: XBRL DOCUMENT v3.20.2
Note 17 - Intangible assets. Other intangible assets (Details) - EUR (€)
Jun. 30, 2020
Dec. 31, 2019
Intangible Assets Other Than Goodwill Line Items    
Other intangible assets € 1,863,000,000 € 2,010,000,000
Computer Software Acquisiton Expenses [Member]    
Intangible Assets Other Than Goodwill Line Items    
Other intangible assets 1,532,000,000 1,598,000,000
Intangible Assets With Indefinite Useful Life Member    
Intangible Assets Other Than Goodwill Line Items    
Other intangible assets 10,000,000 11,000,000
Intangible Assets With definite Useful Life [Member]    
Intangible Assets Other Than Goodwill Line Items    
Other intangible assets 320,000,000 401,000,000
Total    
Intangible Assets Other Than Goodwill Line Items    
Other intangible assets € 1,863,000,000 € 2,010,000,000