Environmental Matters (Tables)

3 Months Ended

Mar. 31, 2016

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Environmental Loss Contingencies By Site Text Block

	As of March 31, 2016				As of December 31, 2015
			Reserve				Reserve
	Number of Sites		(in millions)		Number of Sites		(in millions)
Eversource		64	$	51.7		64	$	51.1
CL&P		14		4.6		14		4.6
NSTAR Electric		15		2.3		15		2.4
PSNH		12		4.4		12		4.5
WMECO		4		0.6		4		0.6