Environmental Matters (Tables)

3 Months Ended

Mar. 31, 2014

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Environmental Loss Contingencies By Site Text Block

	As of March 31, 2014				As of December 31, 2013
			Reserve				Reserve
	Number of Sites		(in millions)		Number of Sites		(in millions)
NU		66	$	35.4		68	$	35.4
CL&P		18		3.4		18		3.4
NSTAR Electric		12		1.2		12		1.2
PSNH		13		5.4		15		5.4
WMECO		5		0.4		5		0.4