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Events subsequent to December 31, 2022 (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | [1]
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Impairment of intangible assets | € (454) | € 192 | € 330
Eloctate |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Reversal amount | 2,154 |  |
Impairment of intangible assets | € 1,651 |  |
[1] | Includes the impacts of the IFRIC final agenda decisions of March 2021 on the costs of configuring or customising application software used in a Software as a Service (SaaS) arrangement and of April 2021 on the attribution of benefits to periods of service, as described in Note A.2.1. to the consolidated financial statements for the year ended December 31, 2021.

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