Provisions (Details) - EUR (€) € in Millions	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Reconciliation of changes in other provisions
Beginning balance	€ 2,448	€ 2,246
Exchange movements	(10)	(31)
Amounts capitalised in the year	71	146
Amounts charged to the income statement	498	1,142
Utilised in the year - payments	(430)	(532)
Amounts released to the income statement	(81)	(186)
Transfer to liabilities held for sale		350
Other		13
Ending balance	2,496	2,448
Asset retirement obligations
Reconciliation of changes in other provisions
Beginning balance	933	1,030
Exchange movements	2	(7)
Amounts capitalised in the year	71	146
Amounts charged to the income statement	0	0
Utilised in the year - payments	(38)	(54)
Amounts released to the income statement	(9)	(5)
Transfer to liabilities held for sale		177
Other		0
Ending balance	959	933
Legal and regulatory
Reconciliation of changes in other provisions
Beginning balance	269	430
Exchange movements	(12)	(24)
Amounts capitalised in the year	0	0
Amounts charged to the income statement	85	162
Utilised in the year - payments	(46)	(72)
Amounts released to the income statement	(21)	(131)
Transfer to liabilities held for sale		96
Other		0
Ending balance	275	269
Restructuring provision
Reconciliation of changes in other provisions
Beginning balance	942	508
Exchange movements	1	3
Amounts capitalised in the year	0	0
Amounts charged to the income statement	133	774
Utilised in the year - payments	(238)	(290)
Amounts released to the income statement	(7)	(7)
Transfer to liabilities held for sale		46
Other		0
Ending balance	831	942
Other
Reconciliation of changes in other provisions
Beginning balance	304	278
Exchange movements	(1)	(3)
Amounts capitalised in the year	0	0
Amounts charged to the income statement	280	206
Utilised in the year - payments	(108)	(116)
Amounts released to the income statement	(44)	(43)
Transfer to liabilities held for sale		31
Other		13
Ending balance	€ 431	€ 304

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

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- Definition

The decrease in other provisions resulting from the transfer of those provisions to liabilities included in disposal groups classified as held for sale. [Refer: Other provisions; Disposal groups classified as held for sale [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: Other provisions]

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- Definition

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

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The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions]

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The amount reversed for unused other provisions. [Refer: Other provisions]

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The amount capitalised during the year for other provisions.

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The increase (decrease) in other provisions resulting other changes.

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