Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 97	$ 4
Accounts receivable, net	136	137
Unbilled revenues	72	93
Inventories	69	56
Margin deposits	83	83
Regulatory assets - current	208	221
Other current assets	75	67
Total current assets	740	661
Electric utility plant, net	4,255	4,133
Regulatory assets - noncurrent	481	544
Non-qualified benefit plan trust	36	44
Nuclear decommissioning trust	37	34
Other noncurrent assets	62	75
Total assets	5,611	5,491
Current liabilities
Accounts payable and accrued liabilites	172	169
Liabilities from price risk mangement activities - current	196	188
Short-term debt	0	19
Current portion of long-term debt	0	10
Regulatory liabilities - current	12	25
Other current liabilities	131	78
Total current liabilities	511	489
Long-term debt, net of current portion	1,798	1,798
Regulatory liabilities - noncurrent	712	657
Deferred income taxes	480	445
Liabilities from price risk mangement activities - noncurrent	147	188
Unfunded status of pension and postretirement plans	102	140
Non-qualified benefit plan liabilities	99	97
Other noncurrent liabilities	106	78
Total liabilities	3,955	3,892
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 September 30, 2011 and December 31, 2010	0	0
Common stock, no par value, 160,000,000 shares authorized; 75,345,351 and 75,316,419 shares issued and outstanding as of September 30, 2011 and December 31, 2010, respectively	833	831
Accumulated other comprehensive loss	(5)	(5)
Retained earnings	825	766
Total Portland General Electric Company shareholders' equity	1,653	1,592
Noncontrolling interests' equity	3	7
Total equity	1,656	1,599
Total liabilities and equity	$ 5,611	$ 5,491