Capitalized Cost from Contracts with Customers (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Incremental Costs of Obtaining Customer Contracts
Capitalized contract cost, current		€ 1,246	€ 1,036
Capitalized contract cost, non-current		3,154	3,019
Assets recognised from costs to obtain or fulfil contracts with customers		4,400	4,054
Other current non-financial assets		2,374	2,139
Other non-current non-financial assets		3,573	3,580
Other non-financial assets		€ 5,947	€ 5,719
Capitalized contract cost as % of other non-financial assets, current		52.00%	48.00%
Capitalized contract cost as % of other non-financial assets, non-current		88.00%	84.00%
Capitalized contract cost as % of Other non-financial assets		74.00%	71.00%
Customer contracts
Incremental Costs of Obtaining Customer Contracts
Amortization expenses	€ 80	€ 121
Capitalized cost of obtaining customer contracts
Incremental Costs of Obtaining Customer Contracts
Amortization period range		18 months to seven years
Capitalized contract cost, current		€ 1,046	€ 871
Capitalized contract cost, non-current		2,918	2,812
Assets recognised from costs to obtain or fulfil contracts with customers		3,964	3,684
Amortization expenses of capitalized contract costs		€ 1,000	725
Incremental costs
Incremental Costs of Obtaining Customer Contracts
Amortization period range		one year or less
Capitalized cost to fulfill customer contracts
Incremental Costs of Obtaining Customer Contracts
Amortization period range		five to eight years
Capitalized contract cost, current		€ 199	164
Capitalized contract cost, non-current		236	206
Assets recognised from costs to obtain or fulfil contracts with customers		436	370
Amortization expenses of capitalized contract costs		€ 327	€ 243

The amount of amortisation for assets recognised from the costs incurred to obtain or fulfil contracts with customers. [Refer: Assets recognised from costs to obtain or fulfil contracts with customers; Amortisation expense]

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The amount of amortisation expense. Amortisation is the systematic allocation of depreciable amounts of intangible assets over their useful lives.

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The amount of assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify.

+ References

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The description of the method used to determine the amortisation of the assets recognised from the costs to obtain or fulfil contracts with customers. [Refer: Assets recognised from costs to obtain or fulfil contracts with customers]

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The amount of current non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets]

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The amount of non-current non-financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets]

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The current amount of assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify.

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The percentage of current amount of assets recognised from the costs to obtain or fulfil contracts with customers to other current non-financial assets.

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No definition available.

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The non-current amount of assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify.

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The percentage of non-current amount of assets recognised from the costs to obtain or fulfil contracts with customers to other non-current non-financial assets.

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The percentage of amount of assets recognised from the costs to obtain or fulfil contracts with customers to other non-financial assets.

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No definition available.

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