Cover Page |
6 Months Ended |
|---|---|
Sep. 30, 2025 | |
| Cover [Abstract] | |
| Amendment flag | false |
| Entity central index key | 0001004315 |
| Current fiscal year end date | --03-31 |
| Document period end date | Sep. 30, 2025 |
| Document fiscal year focus | 2026 |
| Document fiscal period focus | Q2 |
| Entity registrant name | NATIONAL GRID PLC |
| Document type | 6-K |
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- Definition End date of current fiscal year in the format --MM-DD. No definition available.
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- Definition Fiscal period values are FY, Q1, Q2, and Q3. 1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY. No definition available.
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- Definition For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD. No definition available.
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