v3.24.1.1.u2
Financial risk management - Narrative (Details)
12 Months Ended
Mar. 31, 2024
Financial Risk Management [Abstract]
Hedge ratio
1
X
- Definition
Financial Risk Management [Abstract]
+ References
No definition available.
+ Details
Name:
nggtf_FinancialRiskManagementAbstract
Namespace Prefix:
nggtf_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Hedge Ratio
+ References
No definition available.
+ Details
Name:
nggtf_HedgeRatio
Namespace Prefix:
nggtf_
Data Type:
xbrli:pureItemType
Balance Type:
na
Period Type:
duration