Property, Plant and Equipment, Net (Tables)

3 Months Ended

Mar. 31, 2014

Property, Plant and Equipment, Net [Abstract]

Property, Plant, and Equipment, Net

Property, plant and equipment, net consists of the following (in millions):

	As of
	March 31,			December 31,
	2014			2013
Utility plant in-service:
Electric generation	$	1,071		$	1,070
Electric distribution	1,297			1,289
Electric transmission	685			685
Electric intangible plant	143			138
Natural gas distribution	358			357
Natural gas intangible plant	13			13
Common general	219			212
Utility plant in-service	3,786			3,764
Accumulated depreciation and amortization	(1,316		)	(1,301		)
Utility plant in-service, net	2,470			2,463
Construction work-in-progress	96			89
Property, plant and equipment, net	$	2,566		$	2,552