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Income Tax Expense (Details) - Summary of Effective Tax Rate and Standard Corporate Income Tax Rate (Parenthetical) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Current Tax Expense Related to Pillar Two	€ 17	€ 52

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

Current Tax Expense Related to Pillar Two

+ References

No definition available.

+ Details

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