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Derivative financial instruments - Derivative Risk (Details) - Cash Flow Hedges - EUR (€) € in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disclosure of detailed information about hedges [line items]
Hedge ineffectiveness recognized in profit or loss		€ (407.2)
Foreign currency risk
Disclosure of detailed information about hedges [line items]
Hedge ineffectiveness recognized in profit or loss	€ 40.0
Commodity risk
Disclosure of detailed information about hedges [line items]
Hedge ineffectiveness recognized in profit or loss	€ 447.0

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The gains (losses) on the ineffective portion of cash flow hedges recognised in profit or loss. [Refer: Cash flow hedges [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 24
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_24_b&doctype=Standard&book=b
-URIDate 2019-03-27

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- Details

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