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Consolidated Statements of Income (Amounts Attributable to CIGNA)(Unaudited) (USD $)
In Millions
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Consolidated Statements of Income    
Shareholders' net income$ 200$ 307$ 1,037$ 884