Financial Risk Management (Details) |
12 Months Ended |
|---|---|
Mar. 31, 2026 | |
| Market risk - foreign exchange | |
| Disclosure of financial risk management [Line Items] | |
| Source of exposure | Recognized financial assets and liabilities denominated in foreign currencies. |
| Measurement | Cash flow forecasting.Sensitivity analysis. |
| Management | Foreign currencyforwards and foreign currency options |
| Market risk - interest rate | |
| Disclosure of financial risk management [Line Items] | |
| Source of exposure | Borrowings at variable rates. |
| Measurement | Sensitivity analysis |
| Management | Interest rate swaps.Asset-liability management. |
| Market risk - electricity prices | |
| Disclosure of financial risk management [Line Items] | |
| Source of exposure | Highly probable forecast electricity purchases at spot price |
| Measurement | Cash flow forecasting.Sensitivity analysis. |
| Management | Fixed-price physical power purchase agreements |
| Credit risk | |
| Disclosure of financial risk management [Line Items] | |
| Source of exposure | Cash and cash equivalents, trade receivables, derivative financial instruments, debt instruments and contract assets. |
| Measurement | Aging analysis. Credit ratings. Probability of default analysis. Stress testing. |
| Management | Diversification of bankdeposits, credit limits,collateral, credit insurance and letters of credit.Investment guidelinesfor debt instruments. |
| Liquidity risk | |
| Disclosure of financial risk management [Line Items] | |
| Source of exposure | Borrowings and other liabilities |
| Measurement | Rolling cash flow forecasts. Stress testing. |
| Management | Availability of committed credit lines and borrowing facilities from multiple counterparties. Asset-liability management. |