Property, plant and equipment - Narrative (Details) |
12 Months Ended |
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Mar. 31, 2026 | |
| Gas distribution | Weighted average | US | |
| Disclosure of detailed information about property, plant and equipment [line items] | |
| Useful economic life, property, plant and equipment | 54 years |
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- Definition 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. No definition available.
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- Definition The useful life, measured as period of time, used for property, plant and equipment. [Refer: Property, plant and equipment] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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