Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 64	$ 107
Accounts receivable, net	158	146
Unbilled revenues	77	104
Inventories	64	65
Margin deposits	17	9
Regulatory assets - current	55	66
Other current assets	114	94
Total current assets	549	591
Electric utility plant, net	5,009	4,880
Regulatory assets - noncurrent	448	464
Nuclear decommissioning trust	83	82
Non-qualified benefit plan trust	33	35
Other noncurrent assets	47	49
Total assets	6,169	6,101
Current liabilities
Accounts payable	147	173
Liabilities from price risk mangement activities - current	52	49
Current portion of long-term debt	70	0
Accrued expenses and other current liabilities	182	171
Total current liabilities	451	393
Long-term debt, net of current portion	1,846	1,916
Regulatory liabilities - noncurrent	899	865
Deferred income taxes	605	586
Unfunded status of pension and postretirement plans	157	154
Non-qualified benefit plan liabilities	102	101
Asset retirement obligation	101	100
Liabilities from price risk mangement activities - noncurrent	126	141
Other noncurrent liabilities	25	25
Total liabilities	4,312	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 March 31, 2014 and December 31, 2013	0	0
Common stock, no par value, 160,000,000 shares authorized; 78,182,056 and 78,085,559 shares issued and outstanding as of March 31, 2014 and December 31, 2013, respectively	912	911
Accumulated other comprehensive loss	(5)	(5)
Retained earnings	949	913
Total Portland General Electric Company shareholders' equity	1,856	1,819
Noncontrolling interests' equity	1	1
Total equity	1,857	1,820
Total liabilities and equity	$ 6,169	$ 6,101