COMMON SHARESHOLDERS' EQUITY AND NONCONTROLLING INTERESTS (NU) (Tables)

12 Months Ended

Dec. 31, 2012

Notes To Consolidated Financial Statements [Abstract]

19.	COMMON SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS (NU)

A summary of the changes in Common Shareholders' Equity and Noncontrolling Interests of NU is as follows:

								Noncontrolling
		Common						Interest -
		Shareholders'		Noncontrolling		Total		Preferred Stock
(Millions of Dollars)		Equity		Interest		Equity		of Subsidiaries
Balance as of January 1, 2010		$	3,577.9	$	-	$	3,577.9	$	116.2
Net Income			394.1		-		394.1		-
Dividends on Common Shares			(181.7)		-		(181.7)		-
Dividends on Preferred Stock			(6.1)		-		(6.1)		(6.1)
Issuance of Common Shares			7.4		-		7.4		-
Contributions to NPT			-		1.4		1.4		-
Other Transactions, Net			19.6		-		19.6		-
Net Income Attributable to Noncontrolling Interests			(0.1)		0.1		-		6.1
Other Comprehensive Income (Note 15)			0.1		-		0.1		-
Balance as of December 31, 2010		$	3,811.2	$	1.5	$	3,812.7	$	116.2
Net Income			400.5		-		400.5		-
Dividends on Common Shares			(195.6)		-		(195.6)		-
Dividends on Preferred Stock			(5.6)		-		(5.6)		(5.6)
Issuance of Common Shares			5.9		-		5.9		-
Contributions to NPT			-		1.2		1.2		-
Other Transactions, Net			23.9		-		23.9		-
Net Income Attributable to Noncontrolling Interests			(0.3)		0.3		-		5.6
Other Comprehensive Loss (Note 15)			(27.3)		-		(27.3)		-
Balance as of December 31, 2011		$	4,012.7	$	3.0	$	4,015.7	$	116.2
Net Income			533.1		-		533.1		-
Purchase Price of NSTAR ⁽¹⁾			5,038.3		-		5,038.3		-
Other Equity Impacts of Merger with NSTAR ⁽²⁾			3.4		(3.4)		-		39.4
Dividends on Common Shares			(375.5)		-		(375.5)		-
Dividends on Preferred Stock			(7.0)		-		(7.0)		(7.0)
Issuance of Common Shares			13.3		-		13.3		-
Contributions to NPT			-		0.3		0.3		-
Other Transactions, Net			21.1		-		21.1		-
Net Income Attributable to Noncontrolling Interests			(0.1)		0.1		-		7.0
Other Comprehensive Loss (Note 15)			(2.2)		-		(2.2)		-
Balance as of December 31, 2012		$	9,237.1	$	0.0	$	9,237.1	$	155.6

- Definition

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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