Investment income and financing costs (Details) - EUR (€) € in Millions |
12 Months Ended | ||||||
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Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Investment and other income | |||||||
| Financial assets measured at amortised cost | € 1,200 | € 355 | € 327 | ||||
| Financial assets measured at fair value through profit and loss | 195 | 509 | 254 | ||||
| Investment income | 1,395 | 864 | 581 | ||||
| Financial liabilities measured at amortised cost | |||||||
| Bonds | 1,418 | 1,301 | 1,596 | ||||
| Lease liabilities | 615 | 488 | 440 | ||||
| Bank loans and other liabilities | [1] | 416 | 499 | 712 | |||
| Interest on derivative and other financial instruments | (235) | (356) | (395) | ||||
| Mark-to-market on derivatives | 217 | (2) | 100 | ||||
| Foreign exchange | (56) | 1 | 173 | ||||
| Financing costs | 2,375 | 1,931 | 2,626 | ||||
| Net financing costs | [2] | 980 | 1,067 | 2,045 | |||
| Interest capitalised | 0 | 0 | € 0 | ||||
| Gain on redemption of bonds | € 771 | € 253 | |||||
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The gain (loss) recognised on designation of a financial instrument, or a proportion of it, as measured at fair value through profit or loss, because a credit derivative is used to manage the credit risk of that financial instrument. [Refer: Credit risk [member]; Derivatives [member]; Classes of financial instruments [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of interest costs that an entity incurs in connection with the borrowing of funds that are directly attributable to the acquisition, construction or production of a qualifying asset and which form part of the cost of that asset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of investment income, such as interest and dividends. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Gain on redemption of bonds. No definition available.
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- Definition The amount of interest expense on bank loans and other liabilities No definition available.
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- Definition The amount of interest income on derivatives. No definition available.
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- References No definition available.
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- References No definition available.
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