Other current liabilities (Details) - EUR (€) € in Thousands	Mar. 31, 2024	Mar. 31, 2023
Subclassifications of assets, liabilities and equities [abstract]
Accounts payable - Non trade	€ 0	€ 8,030
Input VAT, withholding tax and capital tax	11,065	8,013
Personnel related liabilities	5,220	6,853
Payment solutions payables	11,647	8,990
Other current liabilities	5,801	2,965
Total	€ 33,733	€ 34,851

Current Added-Value Payment Solutions Liabilities

No definition available.

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Namespace Prefix:	gb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Current Non-Trade Account Payables

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Other Miscellaneous, Current Liabilities

+ References

No definition available.

+ Details

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Namespace Prefix:	gb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-URIDate 2023-03-23

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of current value added tax payables. [Refer: Value added tax payables]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
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-URIDate 2023-03-23

+ Details

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Balance Type:	credit
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- Definition

The amount of current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Current liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 55
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-URIDate 2023-03-23

+ Details

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Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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