Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2013

Balance Sheet Components [Abstract]

Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

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

	Nine Months Ended September 30,
	2013			2012
Balance as of beginning of period	$	5		$	6
Provision, net	4			6
Amounts written off, less recoveries	(4		)	(6		)
Balance as of end of period	$	5		$	6

Schedule of Other Current Assets [Table Text Block]

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

	September 30, 2013		December 31, 2012
Prepaid expenses	$	25	$	37
Current deferred income tax asset	37		51
Assets from price risk management activities	1		4
Other	—		1
Other current assets	$	63	$	93

Schedule of Public Utility Property, Plant, and Equipment [Table Text Block]

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

	September 30, 2013			December 31, 2012
Electric utility plant	$	6,975		$	6,811
Construction work in progress	377			140
Total cost	7,352			6,951
Less: accumulated depreciation and amortization	(2,693		)	(2,559		)
Electric utility plant, net	$	4,659		$	4,392

Schedule of Regulatory Assets and Liabilities [Text Block]

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

	September 30, 2013					December 31, 2012
	Current			Noncurrent		Current			Noncurrent
Regulatory assets:
Price risk management	$	88		$	71	$	123		$	71
Pension and other postretirement plans	—			301		—			321
Deferred income taxes	—			74		—			80
Deferred broker settlements	8			—		20			1
Debt reacquisition costs	—			18		—			22
Deferred capital projects	—			29		—			16
Other	3			11		1			13
Total regulatory assets	$	99		$	504	$	144		$	524
Regulatory liabilities:
Asset retirement removal costs	$	—		$	733	$	—		$	692
Trojan decommissioning activities (1)	—			41		—			—
Asset retirement obligations	—			39		—			39
Other	4			39		12			34
Total regulatory liabilities	$	4	(2)	$	852	$	12	(1)	$	765

(1) During the third quarter of 2013, PGE received a settlement for the reimbursement of certain monitoring costs incurred related to spent nuclear fuel at the Company’s Trojan nuclear power plant. See Complaint Against U.S. Department of Energy in Note 7, Contingencies, for additional information.

(2) Included in Accrued expenses and other current liabilities in the condensed consolidated balance sheets.

Other Liabilities Disclosure [Text Block]

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

	September 30, 2013		December 31, 2012
Accrued employee compensation and benefits	$	44	$	46
Accrued interest payable	33		23
Accrued taxes payable	35		21
Accrued dividends payable	22		21
Regulatory liabilities—current	4		12
Other	54		56
Total accrued expenses and other current liabilities	$	192	$	179

Pension and Other Postretirement Benefits Disclosure [Text Block]

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

	Three Months Ended September 30,
	Defined Benefit Pension Plan						Other Postretirement Benefits				Non-Qualified Benefit Plans
	2013			2012			2013		2012		2013		2012
Service cost	$	4		$	3		$	1	$	—	$	—	$	—
Interest cost	7			8			1		1		—		—
Expected return on plan assets	(10		)	(10		)	—		—		—		—
Amortization of prior service cost	—			—			—		1		—		—
Amortization of net actuarial loss	6			4			—		—		—		—
Net periodic benefit cost	$	7		$	5		$	2	$	2	$	—	$	—

	Nine Months Ended September 30,
	Defined Benefit Pension Plan						Other Postretirement Benefits					Non-Qualified Benefit Plans
	2013			2012			2013			2012		2013		2012
Service cost	$	12		$	9		$	2		$	1	$	—	$	—
Interest cost	23			24			3			3		1		1
Expected return on plan assets	(30		)	(30		)	(1		)	—		—		—
Amortization of prior service cost	—			—			1			1		—		—
Amortization of net actuarial loss	18			12			—			—		—		—
Net periodic benefit cost	$	23		$	15		$	5		$	5	$	1	$	1