Capital and financial risk management - Capital management (Details) - EUR (€) € in Millions	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Capital and financial risk management
Borrowings	€ 52,636	€ 53,143
Cash and cash equivalents	(8,982)	(11,001)
Derivative and other financial instruments included in trade and other receivables	(2,975)	(4,197)
Derivative and other financial instruments included in trade and other payables	1,812	1,906
Non-current investments in sovereign securities	(915)	(913)
Short-term investments	(3,431)	(5,280)
Collateral assets	(1,169)	(1,010)
Financial liabilities under put option arrangements	107	97
Equity	54,365	53,916	€ 60,998	€ 64,483
Capital	€ 91,448	€ 86,661

The amount of outstanding funds that the entity is obligated to repay.

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The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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The amount of residual interest in the assets of the entity after deducting all its liabilities.

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The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Classes of contingent liabilities [domain]; Financial assets]

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Bonds, debt securities and managed investment funds

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Financial liabilities under put option arrangements

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The amount of capital.

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Non-current investments in sovereign securities.

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