DERIVATIVE INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Derivative Instruments In Statement Of Financial Position Fair Value Text Block

		As of June 30, 2011
		Derivatives Not
		Designated as Hedges
		Commodity
		and Capacity		Commodity						Net Amount
		Contracts		Supply and						Recorded as
		Required by		Price Risk		Hedging		Collateral		Derivative
(Millions of Dollars)		Regulation		Management		Instruments		and Netting (1)		Asset/(Liability)
Current Derivative Assets:
Level 2:
	Other	$	-	$	-	$	7.7	$	-	$	7.7
Level 3:
	CL&P		15.2		1.0		-		(11.1)		5.1
	Other		-		2.2		-		-		2.2
Total Current Derivative Assets		$	15.2	$	3.2	$	7.7	$	(11.1)	$	15.0
Long-Term Derivative Assets:
Level 3:
	CL&P	$	160.6	$	-	$	-	$	(77.7)	$	82.9
	Other		-		3.8		-		-		3.8
Total Long-Term Derivative Assets		$	160.6	$	3.8	$	-	$	(77.7)	$	86.7
Current Derivative Liabilities:
Level 2:
	PSNH	$	-	$	(6.7)	$	(2.4)	$	-	$	(9.1)
	WMECO		-		-		(1.5)		-		(1.5)
Level 3:
	CL&P		(83.3)		(0.1)		-		-		(83.4)
	Other		-		(12.5)		-		0.9		(11.6)
Total Current Derivative Liabilities		$	(83.3)	$	(19.3)	$	(3.9)	$	0.9	$	(105.6)
Long-Term Derivative Liabilities:
Level 3:
	CL&P	$	(863.3)	$	-	$	-	$	-	$	(863.3)
	Other		-		(21.4)		-		0.4		(21.0)
Total Long-Term Derivative Liabilities		$	(863.3)	$	(21.4)	$	-	$	0.4	$	(884.3)

		As of December 31, 2010
		Derivatives Not Designated
		as Hedges
		Commodity
		and Capacity		Commodity						Net Amount
		Contracts		Supply and						Recorded as
		Required by		Price Risk		Hedging		Collateral		Derivative
(Millions of Dollars)		Regulation		Management		Instruments		and Netting (1)		Asset/(Liability)
Current Derivative Assets:
Level 2:
	Other	$	-	$	-	$	7.7	$	-	$	7.7
Level 3:
	CL&P		5.8		2.1		-		-		7.9
	Other		-		1.7		-		-		1.7
Total Current Derivative Assets		$	5.8	$	3.8	$	7.7	$	-	$	17.3
Long-Term Derivative Assets:
Level 2:
	Other	$	-	$	-	$	4.1	$	-	$	4.1
Level 3:
	CL&P		195.9		-		-		(80.0)		115.9
	Other		-		3.2		-		-		3.2
Total Long-Term Derivative Assets		$	195.9	$	3.2	$	4.1	$	(80.0)	$	123.2
Current Derivative Liabilities:
Level 2:
	PSNH	$	-	$	(12.8)	$	-	$	-	$	(12.8)
Level 3:
	CL&P		(54.3)		(0.2)		-		7.7		(46.8)
	Other		-		(12.4)		-		0.5		(11.9)
Total Current Derivative Liabilities		$	(54.3)	$	(25.4)	$	-	$	8.2	$	(71.5)
Long-Term Derivative Liabilities:
Level 3:
	CL&P	$	(883.1)	$	-	$	-	$	-	$	(883.1)
	Other		-		(26.8)		-		0.2		(26.6)
Total Long-Term Derivative Liabilities		$	(883.1)	$	(26.8)	$	-	$	0.2	$	(909.7)

Schedule Of Derivative Instruments Gain Loss In Statement Of Financial Performance Text Block

			Amount of Gain/(Loss) Recognized on Derivative Instrument
	Location of Gain or Loss		For the Three Months Ended				For the Six Months Ended
	Recognized on Derivative		June 30, 2011		June 30, 2010		June 30, 2011		June 30, 2010
(Millions of Dollars)
NU
Commodity and Capacity Contracts Required by Regulation	Regulatory Assets/Liabilities	$	(13.0)	$	(23.1)	$	(43.2)	$	(91.8)
Commodity Supply and Price Risk Management	Regulatory Assets/Liabilities		(1.7)		1.3		(2.0)		(19.7)
Commodity Supply and Price Risk Management	Fuel, Purchased and Net
	Interchange Power		0.5		0.7		0.8		0.5
CL&P
Commodity and Capacity Contracts Required by Regulation	Regulatory Assets/Liabilities		(13.0)		(23.1)		(43.2)		(91.8)
Commodity Supply and Price Risk Management	Regulatory Assets/Liabilities		(0.9)		(0.6)		(1.9)		(3.6)
PSNH
Commodity Supply and Price Risk Management	Regulatory Assets/Liabilities		(0.8)		1.9		-		(15.7)

Schedule Of Fair Value Hedging Instruments Statements Of Financial Performance And Financial Position Location Table Text Block

	For the Three Months Ended
	June 30, 2011				June 30, 2010
(Millions of Dollars)	Swap		Hedged Debt		Swap		Hedged Debt
Changes in Fair Value	$	0.9	$	(0.9)	$	3.5	$	(3.5)
Interest Recorded in Net Income		-		2.7		-		2.5
	For the Six Months Ended
	June 30, 2011				June 30, 2010
(Millions of Dollars)	Swap		Hedged Debt		Swap		Hedged Debt
Changes in Fair Value	$	1.3	$	(1.3)	$	7.4	$	(7.4)
Interest Recorded in Net Income		-		5.4		-		5.3

Schedule Of Cash Flow Hedges Included In Accumulated Other Comprehensive Income Loss [Table Text Block]

	Gains/(Losses) Recognized on				Gains/(Losses) Reclassified from AOCI				Gains/(Losses) Reclassified from AOCI
	Derivative Instruments				into Interest Expense(1)				into Interest Expense(1)
	For the Three Months Ended		For the Six Months Ended		For the Three Months Ended				For the Six Months Ended
	June 30, 2011		June 30, 2011		June 30, 2011		June 30, 2010		June 30, 2011		June 30, 2010
NU	$	(8.7)	$	(6.8)	$	(0.1)	$	(0.1)	$	(0.2)	$	(0.2)
CL&P		-		-		(0.2)		(0.2)		(0.4)		(0.4)
PSNH		(6.8)		(5.3)		-		-		(0.1)		(0.1)
WMECO		(1.9)		(1.5)		-		-		0.1		0.1

Qualified cash flow hedging instruments for the six months ended June 30, 2011 are as follows:
		For the Six Months Ended June 30, 2011
(Millions of Dollars)		NU		PSNH		WMECO
Balance as of Beginning of Period		$	(4.2)	$	(0.6)	$	(0.1)
	Hedged Transactions Recognized into Earnings		0.1		-		-
	Change in Fair Value of Interest Rate Swap Agreements		(5.1)		(4.0)		(1.1)
	Cash Flow Transactions Entered into for the Period		1.1		0.9		0.2
Net Change Associated with Hedging Transactions			(3.9)		(3.1)		(0.9)
Total Fair Value Adjustments Included in Accumulated
	Other Comprehensive Income	$	(8.1)	$	(3.7)	$	(1.0)
For further information regarding cash flow hedging transactions, see Note 4, "Derivative Instruments," to the unaudited condensed consolidated financial statements.

Schedule Of Credit Risk Contingent Features [Table Text Block]

	As of June 30, 2011
							Additional Cash or Standby
	Fair Value Subject						LOCs Required if
	to Credit Risk		Cash		Standby		Downgraded Below
(Millions of Dollars)	Contingent Features		Collateral Posted		LOCs Posted		Investment Grade
NU	$	(29.7)	$	0.9	$	6.0	$	25.8
PSNH		(9.1)		-		6.0		6.1
WMECO		(1.5)		-		-		1.5

	As of December 31, 2010
							Additional Standby
	Fair Value Subject						LOCs Required if
	to Credit Risk		Cash		Standby		Downgraded Below
(Millions of Dollars)	Contingent Features		Collateral Posted		LOCs Posted		Investment Grade
NU	$	(30.9)	$	0.5	$	24.0	$	18.5
PSNH		(12.8)		-		24.0		-

Rollforward Of Net Derivative Asset Liabilities Valued Using Unobservable Inputs

		For the Three Months Ended June 30, 2011
		NU
		Commodity
		and Capacity		Commodity
		Contracts		Supply and
		Required By		Price Risk
(Millions of Dollars)		Regulation		Management		Total Level 3
Derivatives, Net:
Fair Value as of Beginning of Period		$	(843.9)	$	(28.8)	$	(872.7)
Net Realized/Unrealized Gains/(Losses) Included in:
	Net Income(1)		-		0.5		0.5
	Regulatory Assets/Liabilities		(13.0)		(0.9)		(13.9)
Settlements			(2.7)		2.6		(0.1)
Fair Value as of End of Period		$	(859.6)	$	(26.6)	$	(886.2)
Period Change in Unrealized Gains Included in
	Net Income Relating to Items Held as of End of Period	$	-	$	0.2	$	0.2

		For the Six Months Ended June 30, 2011
		NU
		Commodity
		and Capacity		Commodity
		Contracts		Supply and
		Required By		Price Risk
(Millions of Dollars)		Regulation		Management		Total Level 3
Derivatives, Net:
Fair Value as of Beginning of Period		$	(808.0)	$	(32.2)	$	(840.2)
Net Realized/Unrealized Gains/(Losses) Included in:
	Net Income(1)		-		0.8		0.8
	Regulatory Assets/Liabilities		(43.2)		(2.0)		(45.2)
Settlements			(8.4)		6.8		(1.6)
Fair Value as of End of Period		$	(859.6)	$	(26.6)	$	(886.2)
Period Change in Unrealized Gains Included in
	Net Income Relating to Items Held as of End of Period	$	-	$	0.6	$	0.6

		For the Three Months Ended June 30, 2011
		CL&P
		Commodity
		and Capacity		Commodity
		Contracts		Supply and
		Required By		Price Risk
(Millions of Dollars)		Regulation		Management		Total Level 3
Derivatives, Net:
Fair Value as of Beginning of Period		$	(843.9)	$	1.3	$	(842.6)
Net Realized/Unrealized Losses Included in:
	Regulatory Assets/Liabilities		(13.0)		(0.9)		(13.9)
Settlements			(2.7)		0.5		(2.2)
Fair Value as of End of Period		$	(859.6)	$	0.9	$	(858.7)

		For the Six Months Ended June 30, 2011
		CL&P
		Commodity
		and Capacity		Commodity
		Contracts		Supply and
		Required By		Price Risk
(Millions of Dollars)		Regulation		Management		Total Level 3
Derivatives, Net:
Fair Value as of Beginning of Period		$	(808.0)	$	1.9	$	(806.1)
Net Realized/Unrealized Losses Included in:
	Regulatory Assets/Liabilities		(43.2)		(1.9)		(45.1)
Settlements			(8.4)		0.9		(7.5)
Fair Value as of End of Period		$	(859.6)	$	0.9	$	(858.7)

		For the Three Months Ended June 30, 2010
		NU
		Commodity
		and Capacity		Commodity
		Contracts		Supply and
		Required By		Price Risk
(Millions of Dollars)		Regulation		Management		Total Level 3
Derivatives, Net:
Fair Value as of Beginning of Period		$	(792.9)	$	(41.0)	$	(833.9)
Net Realized/Unrealized Gains/(Losses) Included in:
	Net Income (1)		-		0.7		0.7
	Regulatory Assets/Liabilities		(23.1)		(0.6)		(23.7)
Settlements			(2.3)		2.4		0.1
Fair Value as of End of Period		$	(818.3)	$	(38.5)	$	(856.8)
Period Change in Unrealized Gains Included in
	Net Income Relating to Items Held as of End of Period	$	-	$	0.5	$	0.5

		For the Six Months Ended June 30, 2010
		NU
		Commodity
		and Capacity		Commodity
		Contracts		Supply and
		Required By		Price Risk
(Millions of Dollars)		Regulation		Management		Total Level 3
Derivatives, Net:
Fair Value as of Beginning of Period		$	(720.3)	$	(40.9)	$	(761.2)
Net Realized/Unrealized Gains/(Losses) Included in:
	Net Income(1)		-		0.5		0.5
	Regulatory Assets/Liabilities		(91.8)		(4.2)		(96.0)
Settlements			(6.2)		6.1		(0.1)
Fair Value as of End of Period		$	(818.3)	$	(38.5)	$	(856.8)
Period Change in Unrealized Losses Included in
	Net Income Relating to Items Held as of End of Period	$	-	$	(0.1)	$	(0.1)

		For the Three Months Ended June 30, 2010
		CL&P
		Commodity
		and Capacity		Commodity
		Contracts		Supply and
		Required By		Price Risk
(Millions of Dollars)		Regulation		Management		Total Level 3
Derivatives, Net:
Fair Value as of Beginning of Period		$	(792.9)	$	2.4	$	(790.5)
Net Realized/Unrealized Losses Included in:
	Regulatory Assets/Liabilities		(23.1)		(0.6)		(23.7)
Settlements			(2.3)		-		(2.3)
Fair Value as of End of Period		$	(818.3)	$	1.8	$	(816.5)

		For the Six Months Ended June 30, 2010
		CL&P
		Commodity
		and Capacity		Commodity
		Contracts		Supply and
		Required By		Price Risk
(Millions of Dollars)		Regulation		Management		Total Level 3
Derivatives, Net:
Fair Value as of Beginning of Period		$	(720.3)	$	4.5	$	(715.8)
Net Realized/Unrealized Losses Included in:
	Regulatory Assets/Liabilities		(91.8)		(3.6)		(95.4)
Settlements			(6.2)		0.9		(5.3)
Fair Value as of End of Period		$	(818.3)	$	1.8	$	(816.5)