PROPERTY, PLANT AND ACCUMULATED DEPRECIATION (Tables)

3 Months Ended

Mar. 31, 2014

Notes To Consolidated Financial Statements [Abstract]

Schedule of Public Utility Property, Plant, and Equipment [Text Block]

		As of March 31, 2014		As of December 31, 2013
(Millions of Dollars)		NU		NU
Distribution - Electric		$	12,039.7	$	11,950.2
Distribution - Natural Gas			2,447.9		2,425.9
Transmission			6,423.5		6,412.5
Generation			1,154.7		1,152.3
Electric and Natural Gas Utility			22,065.8		21,940.9
Other (1)			510.2		508.7
Property, Plant and Equipment, Gross			22,576.0		22,449.6
Less: Accumulated Depreciation
	Electric and Natural Gas Utility		(5,491.7)		(5,387.0)
	Other		(204.7)		(196.2)
Total Accumulated Depreciation			(5,696.4)		(5,583.2)
Property, Plant and Equipment, Net			16,879.6		16,866.4
Construction Work in Progress			833.4		709.8
Total Property, Plant and Equipment, Net		$	17,713.0	$	17,576.2

	As of March 31, 2014								As of December 31, 2013
			NSTAR								NSTAR
(Millions of Dollars)	CL&P		Electric		PSNH		WMECO		CL&P		Electric		PSNH		WMECO
Distribution	$	4,979.8	$	4,717.6	$	1,620.3	$	762.0	$	4,930.7	$	4,694.7	$	1,608.2	$	756.6
Transmission		3,074.8		1,769.0		701.7		831.7		3,071.9		1,772.3		695.7		826.4
Generation		-		-		1,133.6		21.1		-		-		1,131.2		21.1
Property, Plant and
Equipment, Gross		8,054.6		6,486.6		3,455.6		1,614.8		8,002.6		6,467.0		3,435.1		1,604.1
Less: Accumulated Depreciation		(1,838.5)		(1,664.6)		(1,040.6)		(278.4)		(1,804.1)		(1,631.3)		(1,021.8)		(271.5)
Property, Plant and Equipment, Net		6,216.1		4,822.0		2,415.0		1,336.4		6,198.5		4,835.7		2,413.3		1,332.6
Construction Work in Progress		290.1		247.2		71.4		62.4		252.8		208.2		54.3		48.5
Total Property, Plant and
Equipment, Net	$	6,506.2	$	5,069.2	$	2,486.4	$	1,398.8	$	6,451.3	$	5,043.9	$	2,467.6	$	1,381.1