FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2011

Notes To Consolidated Financial Statements [Abstract]

Fair Value By Balance Sheet Grouping Text Block

		As of December 31, 2011
		NU				CL&P				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	$	105.1	$	116.2	$	105.1	$	-	$	-	$	-	$	-
Long-Term Debt			4,950.7		5,517.0		2,587.8		2,987.1		999.5		1,075.2		501.1		539.8
Rate Reduction Bonds			112.3		116.8		-		-		85.4		88.8		26.9		28.1

		As of December 31, 2010
		NU				CL&P				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	$	93.7	$	116.2	$	93.7	$	-	$	-	$	-	$	-
Long-Term Debt			4,692.4		5,043.8		2,587.5		2,816.7		837.3		871.4		401.0		417.0
Rate Reduction Bonds			181.6		193.3		-		-		138.2		146.9		43.3		46.4