v3.26.1
Tax matters - Schedule of reconciliation of income tax expense (Details) - EUR (€)
€ in Millions
8 Months Ended 12 Months Ended
Aug. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Consolidated profit (loss) before tax        
From continuing operations € 6,193.0 € 18,681.0 € 17,347.0 € 15,005.0
From discontinued operations   1,950.0 1,680.0 1,454.0
Consolidated profit (loss) before tax:   20,631.0 19,027.0 16,459.0
Income tax at tax rate applicable in Spain (30%)   6,189.0 5,708.0 4,938.0
By the effect of application of the various tax rates applicable in each country   (103.0) 115.0 (100.0)
Effect of profit or loss of associates and joint ventures   (207.0) (213.0) (184.0)
USA electric vehicle leasing incentives   (203.0) (258.0) (259.0)
Global minimum tax Pillar Two   6.0 14.0 0.0
Effect of reassessment of deferred taxes   (101.0) 68.0 0.0
Permanent differences and other   (450.0) (151.0) (119.0)
Income tax   € 5,131.0 € 5,283.0 € 4,276.0
Effective tax rate   24.87% 27.77% 25.98%
Continuing operations € 635.0 € 4,723.0 € 4,844.0 € 3,880.0
Discontinued operations (Note 37)   408.0 439.0 396.0
Current taxes   5,666.0 4,855.0 5,568.0
Deferred taxes   (535.0) 428.0 (1,292.0)
Income tax (receipts)/payments   € 4,954.0 € 5,880.0 € 5,214.0
Spain        
Disclosure of geographical areas [line items]        
Applicable tax rate in Spain   30.00% 30.00% 30.00%
Brazil        
Consolidated profit (loss) before tax        
By the effect of application of the various tax rates applicable in each country   € 264.0 € 413.0 € 198.0
United Kingdom        
Consolidated profit (loss) before tax        
By the effect of application of the various tax rates applicable in each country   (42.0) (53.0) (51.0)
US        
Consolidated profit (loss) before tax        
By the effect of application of the various tax rates applicable in each country   (60.0) (25.0) (28.0)
Chile        
Consolidated profit (loss) before tax        
By the effect of application of the various tax rates applicable in each country   (36.0) (33.0) (28.0)
Poland        
Consolidated profit (loss) before tax        
By the effect of application of the various tax rates applicable in each country   € (224.0) € (183.0) € (164.0)