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Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
--- | --- | ---
ASSETS |  |
Cash and cash equivalents | $ 41 | $ 57
Receivables, less allowances of $74 and $75 for uncollectible accounts at respective dates | 721 | 760
Accrued unbilled revenue | 726 | 519
Inventory | 335 | 350
Prepaid taxes | 275 | 278
Derivative assets | 45 | 65
Regulatory assets | 586 | 494
Other current assets | 234 | 89
Total current assets | 2,963 | 2,612
Nuclear decommissioning trusts | 3,810 | 3,592
Other investments | 110 | 93
Total investments | 3,920 | 3,685
Utility property, plant and equipment, less accumulated depreciation of $ $7,153 and $6,894 at respective dates | 28,708 | 27,569
Nonutility property, plant and equipment, less accumulated depreciation of $113 and $107 at respective dates | 70 | 73
Total property, plant and equipment | 28,778 | 27,642
Derivative assets | 59 | 70
Regulatory assets | 5,776 | 5,815
Other long-term assets | 507 | 491
Total long-term assets | 6,342 | 6,376
Total assets | 42,003 | 40,315
LIABILITIES AND EQUITY |  |
Short-term debt | 300 | 419
Accounts payable | 1,070 | 1,319
Accrued taxes | 35 | 49
Accrued interest | 192 | 167
Customer deposits | 195 | 199
Derivative liabilities | 173 | 266
Regulatory liabilities | 721 | 670
Other current liabilities | 589 | 759
Total current liabilities | 3,275 | 3,848
Long-term debt | 8,827 | 8,431
Deferred income taxes | 6,339 | 5,781
Deferred investment tax credits | 81 | 84
Customer advances | 150 | 138
Derivative liabilities | 796 | 805
Pensions and benefits | 2,333 | 2,461
Asset retirement obligations | 2,691 | 2,610
Regulatory liabilities | 5,038 | 4,670
Other deferred credits and other long-term liabilities | 1,657 | 1,529
Total deferred credits and other liabilities | 19,085 | 18,078
Total liabilities | 31,187 | 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 | 595 | 596
Accumulated other comprehensive loss | (24) | (24)
Retained earnings | 6,282 | 6,173
Total common shareholder's equity | 9,021 | 8,913
Preferred and preference stock | 1,795 | 1,045
Total equity | 10,816 | 9,958
Total liabilities and equity | $ 42,003 | $ 40,315

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