Environmental Matters (Tables)

6 Months Ended

Jun. 30, 2016

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Environmental Loss Contingencies By Site Text Block

	As of June 30, 2016				As of December 31, 2015
			Reserve				Reserve
	Number of Sites		(in millions)		Number of Sites		(in millions)
Eversource		63	$	59.5		64	$	51.1
CL&P		14		4.6		14		4.6
NSTAR Electric		14		2.3		15		2.4
PSNH		12		4.4		12		4.5
WMECO		4		0.6		4		0.6