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Financial Risk Management and Financial Instruments - Other Long Term Investments (Details) - EUR (€) € in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about financial instruments [abstract]
At January 1	€ 16	€ 16	€ 0
Initial recognition of long term investment	9	0	16
Changes in fair value recorded in other comprehensive income	29	0	0
Changes in fair value recognized in profit or loss	(5)	0	0
At December 31	€ 49	€ 16	€ 16

X

- Definition

Gains (losses) on financial assets measured at fair value through other comprehensive income, other long term investment

+ References

No definition available.

+ Details

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X

- Definition

Increase From Initial Recognition Of Long Term Investment, Other

+ References

No definition available.

+ Details

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X

- Definition

Long-Term Investments, Other

+ References

No definition available.

+ Details

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X

- References

No definition available.

+ Details

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X

- Definition

The gains (losses) on financial assets at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 20
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_20_a_i&doctype=Standard
-URIDate 2020-01-01

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