DEFINED CONTRIBUTION PLANS (TABLES)

12 Months Ended

Dec. 31, 2012

Notes To Consolidated Financial Statements [Abstract]

Schedule Of Defined Contribution Plans 401k [Table Text Block]

					NSTAR
(Millions of Dollars)	NU		CL&P		Electric(1)		PSNH		WMECO
2012	$	25.7	$	4.8	$	9.0	$	3.3	$	0.9
2011		17.4		4.5		8.7		3.1		0.9
2010		16.1		4.4		8.1		2.8		0.9