Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2011

Notes To Consolidated Financial Statements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

Q.		Supplemental Cash Flow Information
NU			For the Years Ended December 31,
(Millions of Dollars)			2011		2010		2009
Cash Paid/(Received) During the Year for:
	Interest, Net of Amounts Capitalized		$	256.3	$	258.3	$	263.8
	Income Taxes			(76.6)		84.5		35.1
Non-Cash Investing Activities:
	Capital Expenditures Incurred But Not Paid			168.5		127.9		125.5

		For the Years Ended December 31,
		2011						2010						2009
(Millions of Dollars)		CL&P		PSNH		WMECO		CL&P		PSNH		WMECO		CL&P		PSNH		WMECO
Cash Paid/(Received) During the Year for:
	Interest, Net of Amounts Capitalized	$	136.6	$	49.3	$	22.1	$	142.2	$	51.4	$	20.2	$	146.7	$	49.0	$	19.4
	Income Taxes		(27.5)		(29.0)		(4.9)		71.5		1.6		5.0		42.4		12.8		(9.1)
Non-Cash Investing Activities:
	Capital Expenditures Incurred But Not Paid		32.7		51.1		61.3		46.2		35.8		21.2		48.2		46.5		10.3