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Related Parties - Summary of Balances and Transactions (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of transactions between related parties [line items]
Payables and other liabilities	€ 433	€ 236
Associates And Joint Ventures In Which BBVA And Caixabank Hold Interest
Disclosure of transactions between related parties [line items]
Receivables and other assets	5	9
Payables and other liabilities	80	10
Revenue from operations	13	16	€ 12
Expenses from operations	2	0	0
Financial cost	€ 1	€ 1	€ 1

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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- Definition

The amount of revenue arising from the rendering of services in related party transactions. [Refer: Revenue; Total for all related parties [member]]

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The amount of payables due to related parties. [Refer: Total for all related parties [member]]

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- Definition

The amount of receivables due from related parties. [Refer: Total for all related parties [member]]

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Expenses From Operations, Related Party Transactions

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