Financial Risk Management (Details 5) - Currency risk [member] € in Millions, د.إ in Millions, £ in Millions, SFr in Millions, $ in Millions, $ in Millions, $ in Millions, $ in Millions |
Mar. 31, 2026
USD ($)
|
Mar. 31, 2026
AUD ($)
|
Mar. 31, 2026
CHF (SFr)
|
Mar. 31, 2026
EUR (€)
|
Mar. 31, 2026
GBP (£)
|
Mar. 31, 2026
SGD ($)
|
Mar. 31, 2026
AED (د.إ)
|
Mar. 31, 2026
HKD ($)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2025
AUD ($)
|
Mar. 31, 2025
CHF (SFr)
|
Mar. 31, 2025
EUR (€)
|
Mar. 31, 2025
GBP (£)
|
Mar. 31, 2025
AED (د.إ)
|
Mar. 31, 2025
HKD ($)
|
Mar. 31, 2024
USD ($)
|
Mar. 31, 2024
AUD ($)
|
Mar. 31, 2024
CHF (SFr)
|
Mar. 31, 2024
EUR (€)
|
Mar. 31, 2024
GBP (£)
|
Mar. 31, 2024
SGD ($)
|
Mar. 31, 2024
AED (د.إ)
|
Mar. 31, 2024
HKD ($)
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cash and cash equivalents [Member] | |||||||||||||||||||||||
| Disclosure of financial risk management [Line Items] | |||||||||||||||||||||||
| Net credit exposure | $ 0 | $ 0 | SFr 0 | € 0 | £ 0 | $ 0 | د.إ 0 | $ 0 | $ 0 | $ 0 | SFr 0 | € 0 | £ 0 | د.إ 0 | $ 0 | $ 1 | $ 0 | SFr 0 | € 0 | £ 0 | $ 0 | د.إ 0 | $ 0 |
| Trade receivables [member] | |||||||||||||||||||||||
| Disclosure of financial risk management [Line Items] | |||||||||||||||||||||||
| Net credit exposure | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 1 | 0 | 0 | 0 | 21 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| Trade payables [Member] | |||||||||||||||||||||||
| Disclosure of financial risk management [Line Items] | |||||||||||||||||||||||
| Net credit exposure | (6) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (15) | 0 | 0 | (0) | (0) | (0) | (0) | (8) | 0 | 0 | (0) | 0 | (0) | 0 | |
| Foreign currency loan [Member] | |||||||||||||||||||||||
| Disclosure of financial risk management [Line Items] | |||||||||||||||||||||||
| Net credit exposure | 1 | 0 | 0 | 0 | 0 | 0 | (3) | 0 | 0 | 0 | 0 | (2) | 0 | 0 | 0 | 0 | 0 | 0 | |||||
| Net balance sheet exposure [Member] | |||||||||||||||||||||||
| Disclosure of financial risk management [Line Items] | |||||||||||||||||||||||
| Net credit exposure | $ 19 | $ 0 | SFr 0 | € 0 | £ 0 | $ 0 | د.إ 0 | $ 0 | $ (5) | $ 0 | SFr 0 | € 1 | £ (0) | د.إ (0) | $ (0) | $ 12 | $ 0 | SFr 0 | € 1 | £ 0 | $ 0 | د.إ (0) | $ 0 |