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DERIVATIVE INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2013

Notes To Consolidated Financial Statements [Abstract]

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

		As of June 30, 2013
		Commodity Supply and				Net Amount Recorded as
(Millions of Dollars)		Price Risk Management		Netting⁽¹⁾		Derivative Asset/(Liability)⁽²⁾
Current Derivative Assets:
Level 2:
	Other⁽¹⁾	$	0.4	$	-	$	0.4
Level 3:
	CL&P⁽¹⁾		17.4		(10.2)		7.2
	Other		1.5		-		1.5
Total Current Derivative Assets		$	19.3	$	(10.2)	$	9.1

Long-Term Derivative Assets:
Level 3:
	CL&P⁽¹⁾	$	143.2	$	(53.9)	$	89.3
Total Long-Term Derivative Assets		$	143.2	$	(53.9)	$	89.3

Current Derivative Liabilities:
Level 2:
	PSNH⁽¹⁾	$	(1.5)	$	-	$	(1.5)
	Other⁽¹⁾⁽³⁾		(10.3)		-		(10.3)
Level 3:
	CL&P		(95.2)		-		(95.2)
	NSTAR Electric		(1.6)		-		(1.6)
	WMECO		(0.4)		-		(0.4)
Total Current Derivative Liabilities		$	(109.0)	$	-	$	(109.0)

Long-Term Derivative Liabilities:
Level 3:
	CL&P	$	(777.1)	$	-	$	(777.1)
	NSTAR Electric		(11.5)		-		(11.5)
	WMECO		(0.3)		-		(0.3)
Total Long-Term Derivative Liabilities		$	(788.9)	$	-	$	(788.9)

		As of December 31, 2012
		Commodity Supply and				Net Amount Recorded as
(Millions of Dollars)		Price Risk Management		Netting ⁽¹⁾		Derivative Asset/(Liability)⁽²⁾
Current Derivative Assets:
Level 2:
	Other⁽¹⁾	$	0.2	$	-	$	0.2
Level 3:
	CL&P⁽¹⁾		17.7		(12.0)		5.7
	Other		5.5		-		5.5
Total Current Derivative Assets		$	23.4	$	(12.0)	$	11.4

Long-Term Derivative Assets:
Level 3:
	CL&P⁽¹⁾	$	159.7	$	(69.1)	$	90.6
Total Long-Term Derivative Assets		$	159.7	$	(69.1)	$	90.6

Current Derivative Liabilities:
Level 2:
	Other⁽¹⁾⁽³⁾	$	(19.9)	$	0.6	$	(19.3)
Level 3:
	CL&P		(96.9)		-		(96.9)
	NSTAR Electric		(1.0)		-		(1.0)
Total Current Derivative Liabilities		$	(117.8)	$	0.6	$	(117.2)

Long-Term Derivative Liabilities:
Level 2:
	Other⁽¹⁾	$	(0.2)	$	-	$	(0.2)
Level 3:
	CL&P		(865.6)		-		(865.6)
	NSTAR Electric		(13.9)		-		(13.9)
	WMECO		(3.0)		-		(3.0)
Total Long-Term Derivative Liabilities		$	(882.7)	$	-	$	(882.7)

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

Location of Amounts		Amounts Recognized on Derivatives
Recognized on Derivatives		For the Three Months Ended June 30,				For the Six Months Ended June 30,
(Millions of Dollars)		2013		2012		2013		2012
NU
Balance Sheet:
	Regulatory Assets	$	22.2	$	(40.8)	$	50.1	$	(33.5)
Statement of Income:
	Purchased Power, Fuel and Transmission		0.5		(0.2)		0.8		(1.0)

Schedule Of Credit Risk Contingent Features [Table Text Block]

	As of June 30, 2013						As of December 31, 2012
					Additional Collateral						Additional Collateral
	Fair Value Subject				Required if		Fair Value Subject				Required if
	to Credit Risk		Cash		Downgraded Below		to Credit Risk		Cash		Downgraded Below
(Millions of Dollars)	Contingent Features		Collateral Posted		Investment Grade		Contingent Features		Collateral Posted		Investment Grade
NU	$	(9.7)	$	-	$	11.4	$	(15.3)	$	-	$	17.4
PSNH		(1.5)		-		2.5		0		0		0

Rollforward Of Net Derivative Asset Liabilities Valued Using Unobservable Inputs [Table Text Block]

		For the Three Months Ended				For the Six Months Ended
		June 30, 2013		June 30, 2012		June 30, 2013		June 30, 2012
(Millions of Dollars)		NU		NU		NU		NU
Derivatives, Net:
Fair Value as of Beginning of Period		$	(833.1)	$	(901.5)	$	(878.6)	$	(962.2)
Liabilities Assumed due to Merger with NSTAR			-		(5.4)		-		(5.4)
Transfer to Level 2			-		-		-		32.2
Net Realized/Unrealized Gains/(Losses) Included in:
	Net Income		1.3		(0.7)		7.1		7.4
	Regulatory Assets		22.7		(42.6)		48.9		(35.4)
Settlements			21.0		18.1		34.5		31.3
Fair Value as of End of Period		$	(788.1)	$	(932.1)	$	(788.1)	$	(932.1)

		For the Three Months Ended
		June 30, 2013						June 30, 2012
(Millions of Dollars)		CL&P		NSTAR Electric		WMECO		CL&P		NSTAR Electric⁽¹⁾		WMECO
Derivatives, Net:
Fair Value as of Beginning of Period		$	(819.6)	$	(13.6)	$	(1.8)	$	(899.6)	$	(5.4)	$	(12.3)
Net Realized/Unrealized Gains/(Losses)
	Included in Regulatory Assets		21.9		(0.5)		1.1		(31.8)		(9.6)		(1.2)
Settlements			21.9		1.0		-		20.7		(0.8)		-
Fair Value as of End of Period		$	(775.8)	$	(13.1)	$	(0.7)	$	(910.7)	$	(15.8)	$	(13.5)

		For the Six Months Ended
		June 30, 2013						June 30, 2012
(Millions of Dollars)		CL&P		NSTAR Electric		WMECO		CL&P		NSTAR Electric⁽¹⁾		WMECO
Derivatives, Net:
Fair Value as of Beginning of Period		$	(866.2)	$	(14.9)	$	(3.0)	$	(931.6)	$	(3.4)	$	(7.3)
Net Realized/Unrealized Gains/(Losses)
	Included in Regulatory Assets		46.3		0.2		2.3		(21.0)		(10.2)		(6.2)
Settlements			44.1		1.6		-		41.9		(2.2)		-
Fair Value as of End of Period		$	(775.8)	$	(13.1)	$	(0.7)	$	(910.7)	$	(15.8)	$	(13.5)

Fairvalueinputsliabilitiesquantitativeinformationtabletextblock

	As of June 30, 2013		As of December 31, 2012
	Range	Period Covered	Range	Period Covered
Energy Prices:
NU	$44 - $93 per MWh	2018 - 2028	$43 - $90 per MWh	2018 - 2028
CL&P	$51 - $56 per MWh	2018 - 2020	$50 - $55 per MWh	2018 - 2020
WMECO	$44 - $93 per MWh	2018 - 2028	$43 - $90 per MWh	2018 - 2028

Capacity Prices:
NU	$1.40 - $10.53 per kW-Month	2017 - 2028	$1.40 - $10.53 per kW-Month	2016 - 2028
CL&P	$1.40 - $9.51 per kW-Month	2017 - 2026	$1.40 - $9.83 per kW-Month	2016 - 2026
NSTAR Electric	$1.40 - $3.39 per kW-Month	2017 - 2019	$1.40 - $3.39 per kW-Month	2016 - 2019
WMECO	$1.40 - $10.53 per kW-Month	2017 - 2028	$1.40 - $10.53 per kW-Month	2016 - 2028

Forward Reserve:
NU, CL&P	$3.00 per kW-Month	2013 - 2024	$0.35 - $0.90 per kW-Month	2013 - 2024

REC Prices:
NU	$25 - $85 per REC	2013 - 2028	$25 - $85 per REC	2013 - 2028
NSTAR Electric	$25 - $71 per REC	2013 - 2018	$25 - $71 per REC	2013 - 2018
WMECO	$25 - $85 per REC	2013 - 2028	$25 - $85 per REC	2013 - 2028

- Definition

Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges.

+ References+ Details

- Definition

Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.

+ References+ Details