Balance Sheet Components (Tables)

6 Months Ended

Jun. 30, 2014

The activity in the allowance for uncollectible accounts is as follows (in millions):



	Six Months Ended June 30,
	2014			2013
Balance as of beginning of period	$	6		$	5
Provision, net	4			3
Amounts written off, less recoveries	(3		)	(3		)
Balance as of end of period	$	7		$	5

Other current assets consist of the following (in millions):



	June 30, 2014		December 31, 2013
Current deferred income tax asset	$	43	$	42
Prepaid expenses	32		38
Assets from price risk management activities	18		13
Margin deposits	2		9
Other	3		1
Other current assets	$	98	$	103

Electric utility plant, net consists of the following (in millions):



	June 30, 2014			December 31, 2013
Electric utility plant	$	7,213		$	7,095
Construction work-in-progress	926			508
Total cost	8,139			7,603
Less: accumulated depreciation and amortization	(2,815		)	(2,723		)
Electric utility plant, net	$	5,324		$	4,880

Regulatory assets and liabilities consist of the following (in millions):



	June 30, 2014					December 31, 2013
	Current			Noncurrent		Current			Noncurrent
Regulatory assets:
Price risk management	$	14		$	78	$	36		$	140
Pension and other postretirement plans	—			185		—			194
Deferred income taxes	—			81		—			76
Deferred broker settlements	7			—		12			1
Debt reacquisition costs	—			16		—			17
Deferred capital projects	8			19		16			18
Other	9			20		2			18
Total regulatory assets	$	38		$	399	$	66		$	464
Regulatory liabilities:
Asset retirement removal costs	$	—		$	776	$	—		$	747
Trojan decommissioning activities	—			43		—			41
Asset retirement obligations	—			39		—			39
Other	5			55		1			38
Total regulatory liabilities	$	5	^*	$	913	$	1	^*	$	865


*	Included in Accrued expenses and other current liabilities in the condensed consolidated balance sheets.

Accrued expenses and other current liabilities consist of the following (in millions):



	June 30, 2014		December 31, 2013
Accrued employee compensation and benefits	$	42	$	46
Accrued interest payable	23		23
Accrued dividends payable	23		22
Accrued taxes payable	19		21
Regulatory liabilities—current	5		1
Other	62		58
Total accrued expenses and other current liabilities	$	174	$	171

Components of net periodic benefit cost are as follows (in millions):



	Defined Benefit Pension Plan						Other Postretirement Benefits						Non-Qualified Benefit Plans
	2014			2013			2014			2013			2014		2013
Three Months Ended June 30:
Service cost	$	3		$	4		$	1		$	—		$	—	$	—
Interest cost	8			8			1			1			1		1
Expected return on plan assets	(10		)	(10		)	(1		)	(1		)	—		—
Amortization of prior service cost	—			—			1			1			—		—
Amortization of net actuarial loss	5			6			—			—			—		—
Net periodic benefit cost	$	6		$	8		$	2		$	1		$	1	$	1

Six Months Ended June 30:
Service cost	$	7		$	8		$	1		$	1		$	—	$	—
Interest cost	17			16			2			2			1		1
Expected return on plan assets	(20		)	(20		)	(1		)	(1		)	—		—
Amortization of prior service cost	—			—			1			1			—		—
Amortization of net actuarial loss	9			12			—			—			—		—
Net periodic benefit cost	$	13		$	16		$	3		$	3		$	1	$	1