Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2011

Operating Income is Derived from Revenues and Expenses Directly Associated with Each Segment


	Three Months Ended June 30,						Six Months Ended June 30,
(in millions)	2011			2010			2011			2010
REVENUES
Gas Distribution Operations
Unaffiliated	$	629.7		$	552.0		$	2,214.5		$	2,097.4
Intersegment		0.2			2.7			0.9			8.5

Total		629.9			554.7			2,215.4			2,105.9

Gas Transmission and Storage Operations
Unaffiliated		200.5			185.6			413.9			380.1
Intersegment		33.0			31.7			75.0			93.8

Total		233.5			217.3			488.9			473.9

Electric Operations
Unaffiliated		350.8			342.3			699.6			662.1
Intersegment		0.2			0.2			0.4			0.4

Total		351.0			342.5			700.0			662.5

Corporate and Other
Unaffiliated		47.3			91.2			132.5			390.2
Intersegment		122.2			103.1			232.7			209.9

Total		169.5			194.3			365.2			600.1

Eliminations		(155.6	)		(137.7	)		(309.0	)		(312.6	)

Consolidated Revenues	$	1,228.3		$	1,171.1		$	3,460.5		$	3,529.8


Operating Income (Loss)
Gas Distribution Operations	$	46.4		$	18.5		$	288.0		$	253.6
Gas Transmission and Storage Operations		84.7			74.9			203.2			200.8
Electric Operations		39.8			49.6			83.0			94.7
Corporate and Other		(7.6	)		(3.8	)		(11.7	)		(6.5	)

Consolidated Operating Income	$	163.3		$	139.2		$	562.5		$	542.6

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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