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Commitments and contingent liabilities - Narrative (Details) - Brazil - EUR (€) € in Millions	Dec. 31, 2021	Dec. 31, 2020
Disclosure of contingent liabilities [line items]
Corporate reorganisation tax assessment	€ 2,549	€ 2,040
Potential tax litigation cases that will move to Judicial courts	€ 904

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Indirect tax relating to corporate reorganisation.

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Potential tax litigation cases that will move to judicial courts.

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