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Employees - Summary of Staff Cost, Average and Number of Employees (Details) Employees in Thousands, € in Millions	12 Months Ended
	Dec. 31, 2021 EUR (€) Employees	Dec. 31, 2020 EUR (€) Employees	Dec. 31, 2019 EUR (€) Employees
Disclosure Of Staff And Management Costs [Line Items]
Wages and salaries	€ (5,062)	€ (5,051)	€ (5,364)
Social security costs	(529)	(519)	(541)
Other pension costs	(401)	(419)	(334)
Share-based compensation costs	(161)	(108)	(151)
Gross staff costs	€ (6,153)	€ (6,097)	€ (6,390)
Average number of employees during the year | Employees	149	150	153
Asia/AMET/RUB
Disclosure Of Staff And Management Costs [Line Items]
Average number of employees during the year | Employees	84	83	84
The Americas
Disclosure Of Staff And Management Costs [Line Items]
Average number of employees during the year | Employees	37	38	40
Europe
Disclosure Of Staff And Management Costs [Line Items]
Average number of employees during the year | Employees	28	29	29

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- Definition

The average number of personnel employed by the entity during a period.

+ References

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The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment.

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- Definition

The amount of expense from share-based payment transactions with employees. [Refer: Expense from share-based payment transactions]

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A class of employee benefits expense that represents social security contributions. [Refer: Employee benefits expense]

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Disclosure Of Staff And Management Costs [Line Items]

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Post employment benefit costs.

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