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Investments - Summary of Investments for General Accounts Comprise Financial Assets Excluding Derivatives And Investments in Real Estate (Detail) - EUR (€)
€ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of investments in financial assets and real estate [abstract]      
Available-for-sale (AFS) € 99,884 € 99,580  
Loans 46,823 44,519  
Financial assets at fair value through profit or loss (FVTPL) 8,481 10,057  
Total financial assets, excluding derivatives 155,188 154,156  
Investments in real estate 2,643 2,385 € 2,901
Total investments for general account € 157,831 € 156,541 € 145,976