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Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Statement of Income and Comprehensive Income [Abstract] |  |  |
Net income | $ 1,144 | $ 1,092 | $ 1,371
Pension and postretirement benefits other than pensions: |  |  |
Net loss arising during period, net of income tax benefit of $2, $6 and $5 for 2011, 2010 and 2009 respectively | (3) | (9) | (7)
Amortization of net loss included in net income, net of income tax expense of $2, $2 and $1 for 2011, 2010 and 2009 respectively | 4 | 3 | 2
Comprehensive income | 1,145 | 1,086 | 1,366
Less: Comprehensive income attributable to noncontrolling interests | 0 | 0 | 94
Comprehensive income attributable to SCE | $ 1,145 | $ 1,086 | $ 1,272

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