Provisions - Provision for aircraft maintenance on leased aircraft (Details) € in Millions	12 Months Ended
Mar. 31, 2024 EUR (€) aircraft	Mar. 31, 2023 EUR (€) aircraft	Mar. 31, 2022 EUR (€) aircraft
Provision for aircraft maintenance on leased aircraft
Disclosure of other provisions [line items]
Other provisions at beginning of year	€ 169.8	€ 98.8	€ 53.2
Increase in provision during the year	27.5	71.0	55.6
Utilization of provision upon the hand-back of aircraft	(13.2)		(10.0)
Other provisions at end of year	€ 184.1	€ 169.8	€ 98.8
Airbus A320
Disclosure of other provisions [line items]
Number of leased aircraft returned to lessor \| aircraft	2	1	0
Boeing 737 Aircraft
Disclosure of other provisions [line items]
Number of leased aircraft returned to lessor \| aircraft	0	0	3

The amount of additional other provisions made. [Refer: Other provisions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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The amount of provisions other than provisions for employee benefits. [Refer: Provisions]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The number of leased aircraft returned to the lessor

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