Segment information - Summary of Additional Information by Geographies (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of geographical areas [line items]
Turnover	€ 59,604	€ 60,073	€ 52,444
Asia Pacific Africa
Disclosure of geographical areas [line items]
Turnover	26,234	27,504	24,264
The Americas
Disclosure of geographical areas [line items]
Turnover	21,531	20,905	16,844
North America
Disclosure of geographical areas [line items]
Turnover	13,130	13,000	10,627
Latin America
Disclosure of geographical areas [line items]
Turnover	8,401	7,905	6,217
Europe
Disclosure of geographical areas [line items]
Turnover	€ 11,839	€ 11,664	€ 11,336

The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details