Cash and cash equivalents (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents
Cash and cash equivalents	€ 5,994	€ 10,836
Financial assets classified as cash and cash equivalents	3,984	€ 8,732
Restricted cash	198
Euro
Cash and cash equivalents
Short-term deposits, classified as cash equivalents	€ 3,086
Average maturity period	9 days
Effective interest rate	(0.22%)
USD
Cash and cash equivalents
Short-term deposits, classified as cash equivalents	€ 864
Average maturity period	8 days
Effective interest rate	1.95%

The average maturity of bank deposits in days.

No definition available.

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- Definition

Effective interest rate on deposits

+ References

No definition available.

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- Definition

Ifrs Statement

+ References

No definition available.

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- 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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- 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

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

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

+ References

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

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

+ References

+ Details

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