Special Deposits (Tables)

12 Months Ended

Dec. 31, 2010

Notes To Consolidated Financial Statements [Abstract]

Schedule of Special Deposits [Table Text Block]

NU	As of December 31,
(Millions of Dollars)	2011		2010
Rate Reduction Bond Deposits	$	29.5	$	53.1
Other Deposits		17.7		29.9
	As of December 31,
	2011						2010
(Millions of Dollars)	CL&P		PSNH		WMECO		CL&P		PSNH		WMECO
Rate Reduction Bond Deposits	$	-	$	24.4	$	5.1	$	22.1	$	26.9	$	4.1
Other Deposits		1.1		2.5		2.2		2.1		2.8		1.2