Environmental Matters (Tablels)

12 Months Ended

Dec. 31, 2013

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Environmental Loss Contingencies By Site Text Block

(Millions of Dollars)	NU (1)		CL&P		NSTAR Electric		PSNH		WMECO
Balance as of January 1, 2012	$	31.7	$	2.9	$	1.3	$	6.6	$	0.3
Liabilities Assumed from Merger with NSTAR		11.8		-		-		-		-
Additions		4.7		1.3		0.7		0.2		0.5
Payments/Reductions		(8.8)		(0.5)		(0.3)		(1.9)		(0.2)
Balance as of December 31, 2012		39.4		3.7		1.7		4.9		0.6
Additions		3.5		0.2		0.2		1.0		-
Payments/Reductions		(7.5)		(0.5)		(0.7)		(0.5)		(0.2)
Balance as of December 31, 2013	$	35.4	$	3.4	$	1.2	$	5.4	$	0.4

	As of December 31, 2013				As of December 31, 2012
			Reserve				Reserve
	Number of Sites		(in millions)		Number of Sites		(in millions)
NU		68	$	35.4		77	$	39.4
CL&P		18		3.4		19		3.7
NSTAR Electric		12		1.2		16		1.7
PSNH		15		5.4		16		4.9
WMECO		5		0.4		6		0.6