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Provisions - Other employee benefits, Sensitivity valuation Narratives (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disclosure of defined benefit plans [line items]
Provisions for employee benefits	€ 5,093	€ 5,954
Discount rate | Individual Suspension Plan
Disclosure of defined benefit plans [line items]
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption	120
Impact on income statement	120
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption	(127)
Impact on income statement	127
Individual Suspension Plan
Disclosure of defined benefit plans [line items]
Provisions for employee benefits	€ 3,073	€ 3,648
Discount rate	2.75%
Average duration of plans	2 years 8 months 23 days

X

- Definition

The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [domain]]

+ References

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- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]]

+ References

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- Definition

The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [domain]]

+ References

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- Definition

The amount of provisions for employee benefits. [Refer: Employee benefits expense; Provisions]

+ References

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Increase In Income Due To Reasonably Possible Decrease In Actuarial Assumption

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- Definition

Weighted Average Duration Of Plan

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