v3.25.2
ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS)
 6 Months Ended
Jun. 30, 2025
Equity [Abstract]  
ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS)
The changes in accumulated other comprehensive income/(loss) by component, net of tax, are as follows:
For the Six Months Ended June 30, 2025For the Six Months Ended June 30, 2024
Eversource
(Millions of Dollars)
Qualified
Cash Flow
Hedging
Instruments		Defined
Benefit Plans		TotalQualified
Cash Flow
Hedging
Instruments		Defined
Benefit Plans		Total
Balance as of Beginning of Period$(0.4)$(26.1)$(26.5)$(0.4)$(33.3)$(33.7)
OCI Before Reclassifications
— (0.9)(0.9)— (0.9)(0.9)
Amounts Reclassified from AOCI
— 3.5 3.5 — 5.0 5.0 
Net OCI— 2.6 2.6 — 4.1 4.1 
Balance as of End of Period$(0.4)$(23.5)$(23.9)$(0.4)$(29.2)$(29.6)

Defined benefit plan OCI amounts before reclassifications relate to actuarial gains and losses that arose during the year and were recognized in AOCI. The unamortized actuarial gains and losses and prior service costs on the defined benefit plans are amortized from AOCI into Other Income, Net over the average future employee service period, and are reflected in amounts reclassified from AOCI. Defined benefit plan amounts reclassified from AOCI also include a settlement loss amortized into net periodic benefit plan expense/(income) for the six months ended June 30, 2025. See Note 8, “Pension Benefits and Postretirement Benefits Other Than Pension,” for further information.