Environmental Matters (Tablels)

6 Months Ended

Jun. 30, 2011

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Environmental Loss Contingencies By Site Text Block

	As of June 30, 2011				As of December 31, 2010
			Reserve				Reserve
	Number of Sites		(in millions)		Number of Sites		(in millions)
NU		33	$	28.4		33	$	30.3
CL&P		6		0.9		6		0.8
PSNH		12		8.2		12		8.8
WMECO		8		0.2		8		0.2