v3.26.1
Other disclosures - Disclosure of financing for construction and real estate business in Spain, memorandum items (Details) - EUR (€)
€ in Millions
Jun. 30, 2026
Dec. 31, 2025
Memorandum items:    
Total consolidated assets (Total business) (book value) € 1,954,465 € 1,867,515
Spain | Accumulated impairment    
Memorandum items:    
Impairment losses and provision for exposure classified as normal (business in Spain) 1,037 1,086
Spain | Customers excluding the public sector    
Memorandum items:    
Total loans and advances to customers excluding the public sector (business in Spain) (book value) € 249,522 € 240,609