Other Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Notes To Consolidated Financial Statements [Abstract]

State Of Connecticut Gross Earnings Taxes [Table Text Block]

	For the Years Ended December 31,
(Millions of Dollars)	2012		2011		2010
NU	$	135.0	$	137.8	$	143.7
CL&P		120.7		121.6		128.0