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Other disclosures - Disclosure of financing for construction and real estate business in Spain, memorandum items (Details) - EUR (€)
€ in Millions
Jun. 30, 2022
Dec. 31, 2021
Memorandum items:    
Total consolidated assets (Total business) (book value) € 1,722,840 € 1,595,835
Spain | Accumulated impairment    
Memorandum items:    
Impairment losses and provision for exposure classified as normal (business in Spain) 1,474 1,472
Spain | Customers excluding the public sector    
Memorandum items:    
Total loans and advances to customers excluding the public sector (business in Spain) (book value) € 250,099 € 239,328