FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

3 Months Ended

Sep. 30, 2015

Notes To Consolidated Financial Statements [Abstract]

Fair Value By Balance Sheet Grouping Text Block

	As of September 30, 2015				As of December 31, 2014
Eversource	Carrying		Fair		Carrying		Fair
(Millions of Dollars)	Amount		Value		Amount		Value
Preferred Stock Not Subject to Mandatory Redemption	$	155.6	$	157.3	$	155.6	$	153.6
Long-Term Debt		8,986.4		9,419.6		8,851.6		9,451.2

	As of September 30, 2015
	CL&P				NSTAR Electric				PSNH				WMECO
	Carrying		Fair		Carrying		Fair		Carrying		Fair		Carrying		Fair
(Millions of Dollars)	Amount		Value		Amount		Value		Amount		Value		Amount		Value
Preferred Stock Not Subject to Mandatory Redemption	$	116.2	$	115.4	$	43.0	$	41.9	$	-	$	-	$	-	$	-
Long-Term Debt		2,975.3		3,285.1		1,792.7		1,931.3		1,076.3		1,135.5		577.8		613.3
	As of December 31, 2014
	CL&P				NSTAR Electric				PSNH				WMECO
	Carrying		Fair		Carrying		Fair		Carrying		Fair		Carrying		Fair
(Millions of Dollars)	Amount		Value		Amount		Value		Amount		Value		Amount		Value
Preferred Stock Not Subject to Mandatory Redemption	$	116.2	$	112.0	$	43.0	$	41.6	$	-	$	-	$	-	$	-
Long-Term Debt		2,842.0		3,214.5		1,797.4		1,993.5		1,076.3		1,137.9		628.5		689.4