Revenue - Contract Balances (Details) - EUR (€) € in Billions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Revenue
Contract liabilities at beginning of period	€ 5.3
Increases resulting from billing and invoices becoming due	11.4
Decreases resulting from satisfaction of performance obligations	(11.0)
Other	(0.7)
Contract liabilities at end of period	5.0	€ 5.3
Revenue recognized included in the contract liability balance at the beginning period	€ 4.5	€ 4.1

The amount of an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration (or the amount is due) from the customer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 105
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-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
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-URIDate 2023-03-23

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The decrease in contract liabilities resulting from the performance obligation being satisfied. [Refer: Contract liabilities; Performance obligations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 118
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- References

No definition available.

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- Definition

The amount of revenue that was included in the contract liability balance at the beginning of the period. [Refer: Contract liabilities; Revenue from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2023-01-01
-Paragraph 116
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2023-en-r&anchor=para_116_b&doctype=Standard
-URIDate 2023-03-23

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- Definition

The increase (decrease) in contract liabilities, other. Other includes, for example, the impact of foreign currency translation and business acquisition.

+ References

No definition available.

+ Details

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- Definition

The increase in contract liabilities resulting from billing and invoices becoming due.

+ References

No definition available.

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