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Consolidated Balance Sheets (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
ASSETS    
Cash and cash equivalents $ 90 $ 57
Receivables, less allowances of $75 for uncollectible accounts at both dates 1,067 760
Accrued unbilled revenue 787 519
Inventory 338 350
Prepaid taxes 48 278
Derivative assets 37 65
Regulatory assets 270 494
Deferred income taxes 170 0
Other current assets 110 89
Total current assets 2,917 2,612
Nuclear decommissioning trusts 3,997 3,592
Other investments 112 93
Total investments 4,109 3,685
Utility property, plant and equipment, less accumulated depreciation of $7,378 and $6,894 at respective dates 29,314 27,569
Nonutility property, plant and equipment, less accumulated depreciation of $115 and $107 at respective dates 71 73
Total property, plant and equipment 29,385 27,642
Derivative assets 74 70
Regulatory assets 6,068 5,815
Other long-term assets 506 491
Total long-term assets 6,648 6,376
Total assets 43,059 40,315
LIABILITIES AND EQUITY    
Short-term debt 380 419
Accounts payable 1,214 1,319
Accrued taxes 98 49
Accrued interest 104 167
Customer deposits 193 199
Derivative liabilities 128 266
Regulatory liabilities 493 670
Deferred income taxes 0 89
Other current liabilities 623 670
Total current liabilities 3,233 3,848
Long-term debt 8,828 8,431
Deferred income taxes 6,574 5,781
Deferred investment tax credits 103 84
Customer advances 149 138
Derivative liabilities 983 805
Pensions and benefits 2,359 2,461
Asset retirement obligations 2,731 2,610
Regulatory liabilities 5,249 4,670
Other deferred credits and other long-term liabilities 1,786 1,529
Total deferred credits and other liabilities 19,934 18,078
Total liabilities 31,995 30,357
Commitments and contingencies (Note 9)      
Common stock, no par value (560,000,000 shares authorized; 434,888,104 shares issued and outstanding at each date) 2,168 2,168
Additional paid-in capital 600 596
Accumulated other comprehensive loss (23) (24)
Retained earnings 6,524 6,173
Total common shareholder's equity 9,269 8,913
Preferred and preference stock 1,795 1,045
Total equity 11,064 9,958
Total liabilities and equity $ 43,059 $ 40,315