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Acquisitions and disposals - Disposals, Narrative (Details) - EUR (€) € in Millions		6 Months Ended	12 Months Ended
	Oct. 01, 2021	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disclosure of analysis of single amount of discontinued operations [line items]
Consideration received on disposals			€ 4,606	€ 49
Proportion of ownership interest in subsidiary				100.00%
Gain on disposal of ekaterra			2,334	€ 35
Ekaterra
Disclosure of analysis of single amount of discontinued operations [line items]
Consideration received on disposals		€ 4,594
Disposal, percentage of interest disposed		100.00%
Gain on disposal of ekaterra		€ 2,303	€ 2,303	€ 0	€ 0
Ekaterra
Disclosure of analysis of single amount of discontinued operations [line items]
Proportion of ownership interest in subsidiary	100.00%

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- Definition

The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [member]]

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