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Investment and return - Schedule of Cash and Cash Equivalents Reconciliation to Cash Flow Statement (Details) - EUR (€) € in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investment And Return [Abstract]
Cash and cash equivalents per balance sheet	€ 4,159	€ 4,326
Less: Bank overdrafts	(116)	(101)
Add: Cash and cash equivalents included in assets held for sale	2	0
Less: Bank overdraft included in liabilities held for sale	0	0
Cash and cash equivalents per cash flow statement	€ 4,045	€ 4,225	€ 3,387	€ 5,475

X

- Definition

The amount that has been withdrawn from an account in excess of existing cash balances. This is considered a short-term extension of credit by the bank. [Refer: Cash and cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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X

- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

+ References

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X

- Definition

The amount of cash and cash equivalents that are classified as a part of a disposal group held for sale. [Refer: Cash and cash equivalents; Disposal groups classified as held for sale [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_45&doctype=Standard
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X

- Definition

The amount of cash and cash equivalents in the statement of cash flows when different from the amount of cash and cash equivalents in the statement of financial position. [Refer: Cash and cash equivalents]

+ References

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- Definition

Bank Overdraft Included In Liabilities Held For Sale

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X

- Definition

Investment And Return

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