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Investment and return - Schedule of Cash and Cash Equivalents Reconciliation to Cash Flow Statement (Details) - EUR (€) € in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents if different from statement of financial position [abstract]
Cash and cash equivalents per balance sheet	€ 3,415	€ 5,548
Less: Bank overdrafts	(106)	(73)
Add: Cash and cash equivalents included in assets held for sale	90	0
Less: Bank overdraft included in liabilities held for sale	(12)	0
Cash and cash equivalents per cash flow statement	€ 3,387	€ 5,475	€ 4,116	€ 3,090

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The amount that has been withdrawn from an account in excess of existing cash balances.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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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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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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X

- Definition

Bank Overdraft Included in Liabilities Held for Sale

+ References

No definition available.

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