SEGMENT INFORMATION (Tables)

3 Months Ended

Mar. 31, 2012

Segment Reporting Information [Line Items]

Schedule Of Segment Reporting Information By Segment Text Block

		For the Three Months Ended March 31, 2012
		Regulated Companies
		Distribution
(Millions of Dollars)		Electric		Natural Gas		Transmission		Other		Eliminations		Total
Operating Revenues		$	786.0	$	139.0	$	162.8	$	133.3	$	(121.5)	$	1,099.6
Depreciation and Amortization			(73.0)		(7.7)		(21.1)		(3.9)		0.3		(105.4)
Other Operating Expenses			(621.3)		(102.2)		(47.6)		(134.9)		126.2		(779.8)
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			(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 Interests	$	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

		For the Three Months Ended March 31, 2011
		Regulated Companies
		Distribution
(Millions of Dollars)		Electric		Natural Gas		Transmission		Other		Eliminations		Total
Operating Revenues		$	891.6	$	180.2	$	158.2	$	130.4	$	(125.1)	$	1,235.3
Depreciation and Amortization			(91.9)		(6.8)		(23.4)		(4.3)		0.8		(125.6)
Other Operating Expenses			(692.2)		(133.5)		(48.3)		(135.0)		126.7		(882.3)
Operating Income/(Loss)			107.5		39.9		86.5		(8.9)		2.4		227.4
Interest Expense			(29.5)		(5.2)		(16.3)		(8.6)		1.1		(58.5)
Interest Income			1.1		-		0.2		1.3		(1.3)		1.3
Other Income, Net			3.7		0.4		4.8		149.5		(149.5)		8.9
Income Tax Expense			(26.3)		(12.6)		(29.9)		5.7		(0.4)		(63.5)
Net Income			56.5		22.5		45.3		139.0		(147.7)		115.6
Net Income Attributable
	to Noncontrolling Interests		(0.8)		-		(0.6)		-		-		(1.4)
Net Income Attributable
	to Controlling Interests	$	55.7	$	22.5	$	44.7	$	139.0	$	(147.7)	$	114.2
Total Assets (as of)		$	8,796.1	$	1,437.3	$	3,476.9	$	6,275.0	$	(5,566.8)	$	14,418.5
Cash Flows Used for
	Investments in Plant	$	138.7	$	21.8	$	61.8	$	14.4	$	-	$	236.7

The Connecticut Light And Power Company [Member]

Segment Reporting Information [Line Items]

Schedule Of Segment Reporting Information By Segment Text Block

		CL&P - For the Three Months Ended
		March 31, 2012						March 31, 2011
(Millions of Dollars)		Distribution		Transmission		Total		Distribution		Transmission		Total
Operating Revenues		$	474.7	$	117.3	$	592.0	$	549.9	$	123.8	$	673.7
Depreciation and Amortization			(33.4)		(16.0)		(49.4)		(41.5)		(17.3)		(58.8)
Other Operating Expenses			(396.2)		(34.5)		(430.7)		(451.8)		(37.1)		(488.9)
Operating Income			45.1		66.8		111.9		56.6		69.4		126.0
Interest Expense			(18.8)		(14.7)		(33.5)		(16.5)		(13.3)		(29.8)
Interest Income			0.6		0.1		0.7		0.6		0.1		0.7
Other Income, Net			2.7		1.9		4.6		1.4		2.5		3.9
Income Tax Expense			(8.0)		(21.7)		(29.7)		(12.8)		(23.7)		(36.5)
Net Income		$	21.6	$	32.4	$	54.0	$	29.3	$	35.0	$	64.3
Total Assets (as of)		$	6,141.6	$	2,659.1	$	8,800.7	$	5,563.7	$	2,622.8	$	8,186.5
Cash Flows Used for
	Investments in Plant	$	70.9	$	37.9	$	108.8	$	80.3	$	26.5	$	106.8

Public Service Company Of New Hampshire [Member]

Segment Reporting Information [Line Items]

Schedule Of Segment Reporting Information By Segment Text Block

		PSNH - For the Three Months Ended
		March 31, 2012						March 31, 2011
(Millions of Dollars)		Distribution		Transmission		Total		Distribution		Transmission		Total
Operating Revenues		$	219.5	$	23.5	$	243.0	$	247.9	$	21.6	$	269.5
Depreciation and Amortization			(29.3)		(3.2)		(32.5)		(43.8)		(2.8)		(46.6)
Other Operating Expenses			(156.7)		(8.4)		(165.1)		(168.0)		(8.0)		(176.0)
Operating Income			33.5		11.9		45.4		36.1		10.8		46.9
Interest Expense			(10.6)		(2.2)		(12.8)		(8.7)		(1.8)		(10.5)
Interest Income			0.3		-		0.3		0.5		0.1		0.6
Other Income, Net			1.2		0.6		1.8		3.5		0.5		4.0
Income Tax Expense			(9.3)		(4.1)		(13.4)		(9.9)		(3.6)		(13.5)
Net Income		$	15.1	$	6.2	$	21.3	$	21.5	$	6.0	$	27.5
Total Assets (as of)		$	2,473.2	$	565.9	$	3,039.1	$	2,363.7	$	492.7	$	2,856.4
Cash Flows Used for
	Investments in Plant	$	47.6	$	19.5	$	67.1	$	46.1	$	11.6	$	57.7

Western Massachusetts Electric Company [Member]

Segment Reporting Information [Line Items]

Schedule Of Segment Reporting Information By Segment Text Block

		WMECO - For the Three Months Ended
		March 31, 2012						March 31, 2011
(Millions of Dollars)		Distribution		Transmission		Total		Distribution		Transmission		Total
Operating Revenues		$	91.9	$	22.1	$	114.0	$	93.9	$	12.8	$	106.7
Depreciation and Amortization			(10.3)		(1.9)		(12.2)		(6.6)		(3.3)		(9.9)
Other Operating Expenses			(68.5)		(4.6)		(73.1)		(72.6)		(3.1)		(75.7)
Operating Income			13.1		15.6		28.7		14.7		6.4		21.1
Interest Expense			(3.6)		(2.8)		(6.4)		(4.5)		(1.1)		(5.6)
Interest Income			0.1		-		0.1		0.1		-		0.1
Other Income/(Loss), Net			0.6		0.4		1.0		(1.0)		1.7		0.7
Income Tax Expense			(4.1)		(5.1)		(9.2)		(3.6)		(2.7)		(6.3)
Net Income		$	6.1	$	8.1	$	14.2	$	5.7	$	4.3	$	10.0
Total Assets (as of)		$	944.2	$	631.0	$	1,575.2	$	871.8	$	344.7	$	1,216.5
Cash Flows Used for
	Investments in Plant	$	12.2	$	72.8	$	85.0	$	12.2	$	20.8	$	33.0