DERIVATIVE INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2022

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following table presents the gross fair values of contracts, categorized by risk type, and the net amounts recorded as current or long-term derivative assets or liabilities:

		As of December 31,
		2022						2021
CL&P (Millions of Dollars)	Fair Value Hierarchy	Commodity Supply and Price Risk Management		Netting (1)		Net Amount Recorded as a Derivative		Commodity Supply and Price Risk Management		Netting (1)		Net Amount Recorded as a Derivative
Current Derivative Assets	Level 3	$	16.3	$	(0.5)	$	15.8	$	14.7	$	(1.0)	$	13.7
Long-Term Derivative Assets	Level 3	28.8		(0.9)		27.9		46.9		(0.9)		46.0
Current Derivative Liabilities	Level 3	(81.6)		—		(81.6)		(73.5)		—		(73.5)
Long-Term Derivative Liabilities	Level 3	(143.9)		—		(143.9)		(235.4)		—		(235.4)

(1)     Amounts represent derivative assets and liabilities that Eversource elected to record net on the balance sheets.  These amounts are subject to master netting agreements or similar agreements for which the right of offset exists.

Fair Value Inputs, Liabilities, Quantitative Information

	As of December 31,
	2022								2021
CL&P	Range				Average			Period Covered	Range				Average			Period Covered
Forward Reserve Prices	$	0.44	—	$0.50	$	0.47	per kW-Month	2023 - 2024	$	0.50	—	$1.15	$	0.82	per kW-Month	2022 - 2024

Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation

The following table presents changes in the Level 3 category of derivative assets and derivative liabilities measured at fair value on a recurring basis.  The derivative assets and liabilities are presented on a net basis.

CL&P (Millions of Dollars)	For the Years Ended December 31,
	2022		2021
Derivatives, Net:
Fair Value as of Beginning of Period	$	(249.2)	$	(293.1)
Net Realized/Unrealized Gains/(Losses) Included in Regulatory Assets	10.1		(8.5)
Settlements	57.3		52.4
Fair Value as of End of Period	$	(181.8)	$	(249.2)