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Cash and cash equivalents (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalents
Cash and cash equivalents	€ 9,413	€ 5,994
Financial assets classified as cash and cash equivalents	6,913	3,984
Restricted cash	198	€ 198
Euro
Cash and cash equivalents
Short-term deposits, classified as cash equivalents	€ 5,948
Average maturity period	50 days
Effective interest rate	(0.40%)
US Dollars
Cash and cash equivalents
Short-term deposits, classified as cash equivalents	€ 944
Average maturity period	8 days
Effective interest rate	0.25%

X

- Definition

The average maturity of bank deposits in days.

+ References

No definition available.

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- Definition

Effective interest rate on deposits

+ References

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- Definition

Ifrs Statement

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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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- Definition

The amount of 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.

+ References

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- Definition

The amount of cash and cash equivalents whose use or withdrawal is restricted. [Refer: Cash and cash equivalents]

+ References

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- Definition

A classification of cash equivalents representing short-term deposits. [Refer: Cash equivalents]

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