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Consolidated Balance Sheets (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Current assets:    
Cash and cash equivalents $ 6 $ 4
Accounts receivable, net 144 137
Unbilled revenues 101 93
Inventories, at average cost:    
Materials and supplies 37 34
Fuel 34 22
Margin deposit 80 83
Regulatory assets--current 216 221
Other current assets 98 67
Total current assets 716 661
Electric utility plant:    
Production 2,854 2,745
Transmission 393 372
Distribution 2,704 2,582
General 314 294
Intangible 331 286
Construction work in progress 120 125
Total electric utility plant 6,716 6,404
Accumulated depreciation and amortization (2,431) (2,271)
Electric utility plant, net 4,285 4,133
Regulatory assets--noncurrent 594 544
Nuclear decommissioning trust 37 34
Non-qualified benefit plan trust 36 44
Other noncurrent assets 65 75
Total assets 5,733 5,491
Current liabilities:    
Accounts payable 111 102
Liabilities from price risk management activities-current 216 188
Short-term debt 30 19
Current portion of long-term debt 100 10
Regulatory liabilities--current 6 25
Accrued expenses and other current liabilities 151 145
Total current liabilities 614 489
Long-term debt, net of current portion 1,635 1,798
Regulatory liabilities--noncurrent 720 657
Deferred income taxes 529 445
Liabilities from price risk management activities--noncurrent 172 188
Unfunded status of pension and postretirement plans 195 140
Non-qualified benefit plan liabilities 101 97
Other noncurrent liabilities 101 78
Total liabilities 4,067 3,892
Commitments and Contingencies      
Portland General Electric Company shareholders’ equity:    
Preferred stock, no par value, 30,000,000 shares authorized; none issued and outstanding 0 0
Common stock, no par value, 160,000,000 shares authorized; 75,362,956 and 75,316,419 shares issued and outstanding as of December 31, 2011 and 2010, respectively 836 831
Accumulated other comprehensive loss (6) (5)
Retained earnings 833 766
Total Portland General Electric Company shareholders’ equity 1,663 1,592
Noncontrolling interests' equity 3 7
Total equity 1,666 1,599
Total liabilities and equity $ 5,733 $ 5,491