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Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Receivables, allowances for uncollectible accounts (in dollars) | $ 67 | $ 75
Utility property, plant and equipment, accumulated depreciation (in dollars) | 7,662 | 7,424
Nonutility property, plant and equipment, accumulated depreciation (in dollars) | 126 | 123
Common stock, no par value (in dollars per share) | $ 0 | $ 0
Common stock, shares authorized | 800,000,000 | 800,000,000
Common stock, shares issued | 325,811,206 | 325,811,206
Common stock, shares outstanding | 325,811,206 | 325,811,206
Southern California Edison |  |
Receivables, allowances for uncollectible accounts (in dollars) | 75 | 75
Utility property, plant and equipment, accumulated depreciation (in dollars) | 7,424 | 6,894
Nonutility property, plant and equipment, accumulated depreciation (in dollars) | $ 117 | $ 107
Common stock, no par value (in dollars per share) | $ 0 | $ 0
Common stock, shares authorized | 560,000,000 | 560,000,000
Common stock, shares issued | 434,888,104 | 434,888,104
Common stock, shares outstanding | 434,888,104 | 434,888,104

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