Distribution of Banco Santander's profit, shareholder remuneration scheme and earnings per share - Schedule of provisional accounting statement for interim dividend (Details) - EUR (€) € in Millions	8 Months Ended	12 Months Ended
Aug. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Shareholder Remuneration System And Earnings Per Share [Abstract]
Profit before taxes	€ 6,193.0	€ 18,681.0	€ 17,347.0	€ 15,005.0
Continuing operations	635.0	4,723.0	4,844.0	3,880.0
Dividends paid in cash	0.0	4,237.0	3,677.0	3,009.0
Distributable maximum amount	5,558.0
Cash, cash balances at central banks and other deposits on demand	€ 96,923.0	€ 152,281.0	€ 192,208.0	€ 220,342.0

Distribution of Banco Santander's profit, shareholder remuneration scheme and earnings per share - Schedule of provisional accounting statement for interim dividend (Details) - EUR (€)
€ in Millions

8 Months Ended

12 Months Ended

Aug. 31, 2025

Dec. 31, 2025

Dec. 31, 2024

Dec. 31, 2023

Shareholder Remuneration System And Earnings Per Share [Abstract]

Profit before taxes

€ 6,193.0

€ 18,681.0

€ 17,347.0

€ 15,005.0

Continuing operations

635.0

4,723.0

4,844.0

3,880.0

Dividends paid in cash

0.0

4,237.0

3,677.0

3,009.0

Distributable maximum amount

5,558.0

Cash, cash balances at central banks and other deposits on demand

€ 96,923.0

€ 152,281.0

€ 192,208.0

€ 220,342.0

- References

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+ Details