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DERIVATIVE INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2012

Notes To Consolidated Financial Statements [Abstract]

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

		As of December 31, 2012
		Commodity Supply and		Collateral		Net Amount Recorded as
(Millions of Dollars)		Price Risk Management		and Netting ⁽¹⁾		Derivative Asset/(Liability)⁽²⁾
Current Derivative Assets:
Level 2:
	Other	$	0.2	$	-	$	0.2
Level 3:
	CL&P		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	$	159.7	$	(69.1)	$	90.6
Total Long-Term Derivative Assets		$	159.7	$	(69.1)	$	90.6

Current Derivative Liabilities:
Level 2:
	Other	$	(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	$	(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)

		As of December 31, 2011
		Commodity Supply and		Collateral		Net Amount Recorded as
(Millions of Dollars)		Price Risk Management		and Netting⁽¹⁾		Derivative Asset/(Liability)⁽²⁾
Current Derivative Assets:
Level 3:
	CL&P	$	17.9	$	(11.6)	$	6.3
	Other		4.7		-		4.7
Total Current Derivative Assets⁽³⁾		$	22.6	$	(11.6)	$	11.0

Long-Term Derivative Assets:
Level 3:
	CL&P	$	174.2	$	(80.4)	$	93.8
	Other		4.6		-		4.6
Total Long-Term Derivative Assets		$	178.8	$	(80.4)	$	98.4

Current Derivative Liabilities:
Level 3:
	CL&P	$	(95.9)	$	-	$	(95.9)
	WMECO		(0.1)		-		(0.1)
	Other		(16.1)		4.5		(11.6)
Total Current Derivative Liabilities		$	(112.1)	$	4.5	$	(107.6)

Long-Term Derivative Liabilities:
Level 3:
	CL&P	$	(935.8)	$	-	$	(935.8)
	WMECO		(7.2)		-		(7.2)
	Other		(17.3)		0.4		(16.9)
Total Long-Term Derivative Liabilities⁽⁴⁾		$	(960.3)	$	0.4	$	(959.9)

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 Years Ended December 31,
(Millions of Dollars)		2012		2011		2010
NU
Balance Sheet:
	Regulatory Assets	$	(29.0)	$	(162.0)	$	(95.7)
Statement of Income:
	Purchased Power, Fuel and Transmission		(0.7)		0.5		2.7

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

	Gains/(Losses) Recognized on		Gains/(Losses) Reclassified from AOCI
	Derivative Instruments		into Interest Expense
	For the Year Ended December 31,		For the Years Ended December 31,
(Millions of Dollars)	2011		2012		2011		2010
NU	$	(25.1)	$	(3.3)	$	(1.3)	$	(0.4)
CL&P		-		(0.7)		(0.7)		(0.7)
PSNH		(18.2)		(2.0)		(0.8)		(0.2)
WMECO		(6.9)		(0.5)		(0.1)		0.1

		For the Year Ended December 31, 2011
(Millions of Dollars)		NU			PSNH		WMECO
Balance as of January 1, 2011		$	(4.2)	$	(0.6)	$	(0.1)
	Hedged Transactions Recognized into Earnings		0.7		0.5		0.1
	Cash Flow Hedging Transactions Entered into for the Year		(14.9)		(10.8)		(4.2)
Net Change Associated with Hedging Transactions			(14.2)		(10.3)		(4.1)
Balance as of December 31, 2011		$	(18.4)	$	(10.9)	$	(4.2)

For further information regarding cash flow hedging transactions, see Note 5, "Derivative Instruments," to the consolidated financial statements.

Schedule Of Credit Risk Contingent Features [Table Text Block]

As of December 31, 2012

As of December 31, 2011

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

(15.3)

17.4

(23.5)

4.1

19.9

Fairvalueinputsliabilitiesquantitativeinformationtabletextblock

	Range	Period Covered
Energy Prices:
NU	$43 - $90 per MWh	2018 - 2028
CL&P	$50 - $55 per MWh	2018 - 2020
WMECO	$43 - $90 per MWh	2018 - 2028

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

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

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

(Millions of Dollars)		NU		CL&P		NSTAR Electric⁽¹⁾		WMECO
Derivatives, Net:
Fair Value as of January 1, 2011		$	(840.2)	$	(806.1)	$	(2.4)	$	-
Net Realized/Unrealized Gains/(Losses) Included in:
	Net Income		0.5		-		-		-
	Regulatory Assets		(161.0)		(153.6)		(4.3)		(7.3)
Settlements			38.5		28.1		3.3		-
Fair Value as of December 31, 2011		$	(962.2)	$	(931.6)	$	(3.4)	$	(7.3)
Liabilities Assumed due to Merger with NSTAR			(5.4)		-		-		-
Transfer to Level 2			32.2		-		-		-
Net Realized/Unrealized Gains/(Losses) Included in:
	Net Income ⁽²⁾		10.9		-		-		-
	Regulatory Assets		(29.2)		(21.6)		(15.2)		4.3
Settlements			75.1		87.0		3.7		-
Fair Value as of December 31, 2012		$	(878.6)	$	(866.2)	$	(14.9)	$	(3.0)

- 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