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Operating costs and non-underlying items - Narrative (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Analysis of income and expense [abstract]
Exchange losses	€ 225	€ 0	€ (45)

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Gain losses on exchange difference amounts on forward contracts and underlying transactions.

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