RATE REDUCTION BONDS AND VARIABLE INTEREST ENTITIES- Rate Reduction Bonds, Principal and Interest Payments (Details) - PSNH $ in Millions	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
2026	$ 43.2
2027	43.2
2028	43.2
2029	43.2
2030	43.2
Thereafter	108.1
Total	$ 324.1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details