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Consolidated Statements of Income (Amounts Attributable to CIGNA)(Unaudited) (USD $)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Consolidated Statements of Income        
Shareholders' Net Income $ 408 $ 294 $ 837 $ 577