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Equity Investments - Venture Capital (Details) - EUR (€)
€ in Millions
Dec. 31, 2019
Dec. 31, 2018
Equity Investments    
Investments in venture capital funds € 206 € 187
Total commitments to make equity investment in other entities 517 418
Drawn made from total commitments to make equity investment in other entities 312 € 232
2020    
Equity Investments    
Investments in venture capital funds € 206