Property, Plant and Equipment, Net (Notes)

9 Months Ended

Sep. 30, 2015

Property, Plant and Equipment, Net [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net

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

		As of
	Depreciable Life	September 30,			December 31,
		2015			2014
Utility plant in-service:
Electric generation	40 - 125 years	$	1,104		$	1,036
Electric distribution	20 - 70 years	1,369			1,321
Electric transmission	50 - 70 years	728			719
Electric general and intangible plant	5 - 65 years	134			123
Natural gas distribution	40 - 70 years	371			366
Natural gas general and intangible plant	8 - 10 years	13			13
Common general	5 - 65 years	245			234
Utility plant in-service		3,964			3,812
Accumulated depreciation and amortization		(1,364		)	(1,300		)
Utility plant in-service, net		2,600			2,512
Construction work-in-progress		89			128
Property, plant and equipment, net		$	2,689		$	2,640