Other Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Notes To Consolidated Financial Statements [Abstract]

State Of Connecticut Gross Earnings Taxes [Table Text Block]

	For the Years Ended December 31,
(Millions of Dollars)	2011		2010		2009
NU	$	137.8	$	143.7	$	135.6
CL&P		121.6		128.0		119.0