Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 97	$ 107
Accounts receivable, net	121	146
Unbilled revenues	74	104
Inventories	85	65
Regulatory assets - current	38	66
Other current assets	98	103
Total current assets	513	591
Electric utility plant, net	5,324	4,880
Regulatory assets - noncurrent	399	464
Nuclear decommissioning trust	83	82
Non-qualified benefit plan trust	33	35
Other noncurrent assets	47	49
Total assets	6,399	6,101
Current liabilities
Accounts payable	181	173
Liabilities from price risk mangement activities - current	32	49
Current portion of long-term debt	70	0
Accrued expenses and other current liabilities	174	171
Total current liabilities	457	393
Long-term debt, net of current portion	2,071	1,916
Regulatory liabilities - noncurrent	913	865
Deferred income taxes	613	586
Unfunded status of pension and postretirement plans	160	154
Non-qualified benefit plan liabilities	101	101
Asset retirement obligation	105	100
Liabilities from price risk mangement activities - noncurrent	83	141
Other noncurrent liabilities	24	25
Total liabilities	4,527	4,281
Commitments and contingencies (see notes)
Portland General Electric Company shareholders' equity:
Preferred stock, no par value, 30,000,000 shares authorized; none issued and outstanding as of June 30, 2014 and December 31, 2013	0	0
Common stock, no par value, 160,000,000 shares authorized; 78,202,241 and 78,085,559 shares issued and outstanding as of June 30, 2014 and December 31, 2013, respectively	914	911
Accumulated other comprehensive loss	(5)	(5)
Retained earnings	962	913
Total Portland General Electric Company shareholders' equity	1,871	1,819
Noncontrolling interests' equity	1	1
Total equity	1,872	1,820
Total liabilities and equity	$ 6,399	$ 6,101