SEGMENT INFORMATION

3 Months Ended

Mar. 31, 2013

Notes To Consolidated Financial Statements [Abstract]

Segment Reporting Disclosure [Text Block]

15.SEGMENT INFORMATION (NU)

Presentation: NU is organized between the Electric Distribution, Electric Transmission and Natural Gas Distribution segments and Other based on a combination of factors, including the characteristics of each segments' products and services, the sources of operating revenues and expenses and the regulatory environment in which each segment operates. These segments represented substantially all of NU's total consolidated revenues for the three month periods endedMarch 31, 2013 and2012. Revenues from the sale of electricity and natural gas primarily are derived from residential, commercial and industrial customers and are not dependent on any single customer. The Electric Distribution segment includes the generation activities of PSNH and WMECO.

Other operations in the tables below primarily consists of 1) the equity in earnings of NU parent from its subsidiaries and intercompany interest income, both of which are eliminated in consolidation, and interest income and expense related to the cash and debt of NU parent and NSTAR LLC, respectively, 2) the revenues and expenses of NU's service companies, most of which are eliminated in consolidation, 3) the operations of CYAPC and YAEC, and 4) the results of other subsidiaries, which are comprised of NU Enterprises, NSTAR Communications, Inc., RRR (a real estate subsidiary), the non-energy-related subsidiaries of Yankee and the remaining operations of HWP.

Cash flows used for investments in plant included in the segment information below are cash capital expenditures that do not include amounts incurred but not paid, cost of removal, AFUDC related to equity funds, and the capitalized portions of pension and PBOP expense or income.

As discussed in Note 1A, “Summary of Significant Accounting Policies – Basis of Presentation,” certain reclassifications of priorperioddata were made in the consolidated statements of income for NU. Accordingly, the corresponding items of segment information have been recast for prior periodsfor comparative purposes.

NU's reportable segments are the combined Electric Distribution, Electric Transmission and Natural Gas Distribution segments, based upon the level at which NU's chief operating decision maker assesses performance and makes decisions about the allocation of company resources. Each of NU's subsidiaries, including CL&P, NSTAR Electric, PSNH and WMECO, has one reportable segment. Therefore, separate Transmission and Distribution information is not disclosed for CL&P, NSTAR Electric, PSNH or WMECO. NU's operating segments and reporting units are consistent with its reportable business segments.

NSTAR amounts are not included in NU consolidated as of March 31, 2012, but are included as of March 31, 2013.

NU's segment information for the three month periods endedMarch 31, 2013 and 2012 is as follows:

		For the Three Months Ended March 31, 2013
		Electric		Natural Gas
(Millions of Dollars)		Distribution		Distribution		Transmission		Other		Eliminations		Total
Operating Revenues		$	1,374.2	$	361.8	$	239.5	$	217.2	$	(197.7)	$	1,995.0
Depreciation and Amortization			(177.0)		(17.4)		(31.8)		(19.0)		1.7		(243.5)
Other Operating Expenses			(1,004.9)		(267.2)		(62.2)		(197.4)		199.2		(1,332.5)
Operating Income			192.3		77.2		145.5		0.8		3.2		419.0
Interest Expense			(42.1)		(7.4)		(21.9)		(6.4)		1.5		(76.3)
Interest Income			1.0		-		0.1		1.6		(1.6)		1.1
Other Income, Net			3.8		0.2		2.7		320.3		(320.3)		6.7
Income Tax (Expense)/Benefit			(54.3)		(26.7)		(45.8)		6.5		(0.2)		(120.5)
Net Income			100.7		43.3		80.6		322.8		(317.4)		230.0
Net Income Attributable
	to Noncontrolling Interests		(1.2)		-		(0.7)		-		-		(1.9)
Net Income Attributable
	to Controlling Interest	$	99.5	$	43.3	$	79.9	$	322.8	$	(317.4)	$	228.1
Total Assets (as of)		$	18,208.2	$	2,735.4	$	6,269.1	$	18,749.8	$	(17,633.8)	$	28,328.7
Cash Flows Used for
	Investments in Plant	$	157.8	$	31.2	$	185.4	$	14.6	$	-	$	389.0

		For the Three Months Ended March 31, 2012
		Electric		Natural Gas
(Millions of Dollars)		Distribution		Distribution		Transmission		Other		Eliminations		Total
Operating Revenues		$	786.0	$	139.0	$	162.8	$	133.3	$	(121.5)	$	1,099.6
Depreciation and Amortization			(72.2)		(7.7)		(21.1)		(3.9)		0.3		(104.6)
Other Operating Expenses			(622.1)		(102.2)		(47.6)		(134.9)		126.2		(780.6)
Operating Income/(Loss)			91.7		29.1		94.1		(5.5)		5.0		214.4
Interest Expense			(33.0)		(5.4)		(19.7)		(9.4)		1.1		(66.4)
Interest Income			1.1		-		0.1		1.3		(1.3)		1.2
Other Income, Net			4.4		-		3.3		122.6		(122.7)		7.6
Income Tax (Expense)/Benefit			(21.4)		(9.0)		(30.8)		6.0		(0.8)		(56.0)
Net Income			42.8		14.7		47.0		115.0		(118.7)		100.8
Net Income Attributable
	to Noncontrolling Interests		(0.8)		-		(0.7)		-		-		(1.5)
Net Income Attributable
	to Controlling Interest	$	42.0	$	14.7	$	46.3	$	115.0	$	(118.7)	$	99.3
Total Assets (as of)		$	9,553.3	$	1,498.2	$	3,900.7	$	7,261.7	$	(6,235.5)	$	15,978.4
Cash Flows Used for
	Investments in Plant	$	130.7	$	20.5	$	135.9	$	17.2	$	-	$	304.3