Segment Information (Tables)

3 Months Ended

Mar. 31, 2014

Schedule of Segment Reporting Information, by Segment

The following tables provide information on a reportable segment basis for the three-month periods ended March 31 (in millions):



	2014
			Natural
	Electric		Gas		Total
Operating revenue	$	177	$	44	$	221
Cost of fuel, energy and capacity	80		—		80
Natural gas purchased for resale	—		29		29
Gross margin	$	97	$	15	112

Operating and maintenance expense					34
Depreciation and amortization					26
Property and other taxes					6
Interest expense, net of allowance for debt funds					15
Allowance for equity funds					(1		)
Other, net					(2		)
Income before income tax expense					$	34



	2013
			Natural
	Electric		Gas		Total
Operating revenue	$	172	$	34	$	206
Cost of fuel, energy and capacity	62		—		62
Natural gas purchased for resale	—		18		18
Gross margin⁽¹⁾	$	110	$	16	126

Operating and maintenance expenses					48
Depreciation and amortization					25
Property and other taxes					6
Interest expense, net of allowance for debt funds					16
Allowance for equity funds					(1		)
Other, net					(2		)
Income before income tax expense					$	34


(1)	Energy efficiency program costs were reclassified from gross margin to operating and maintenance expenses for presentation purposes.



	As of
	March 31,		December 31,
	2014		2013
Total assets:
Electric	$	2,952	$	2,957
Natural gas	347		335
Other⁽¹⁾	89		77
Total assets	$	3,388	$	3,369


(1)	Consists principally of cash and cash equivalents.

- 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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