Segment information - Segment equity and liabilities - Additional information (Details) - EUR (€) € in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of operating segments [line items]
Non-current financial liabilities related to Mobile Financial Services activities	€ 82
Non-current financial liabilities	31,930
Current financial liabilities related to Mobile Financial Services activities	3,034	€ 3,161	€ 3,128
Mobile Financial Services, operating segment [member]
Disclosure of operating segments [line items]
Non-current financial liabilities	171	86	102
Current financial liabilities related to Mobile Financial Services activities	3,034	€ 3,161	€ 3,128
Mobile Financial Services, operating segment [member] \| Operating segments [member]
Disclosure of operating segments [line items]
Non-current financial liabilities related to Mobile Financial Services activities	109
Current financial liabilities related to Mobile Financial Services activities	€ 3,034

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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The amount of non-current financial liabilities. [Refer: Financial liabilities]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-IssueDate 2022-03-24
-Paragraph 25
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Current financial liabilities related to banking activities.

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Noncurrent financial liabilities related to banking activities.

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