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Component: (Network and Table)
Network
1001501 - Statement - Consolidated Balance Sheets (Parenthetical)
(http://www.wellpoint.com/role/ConsolidatedBalanceSheetsParenthetical)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001156039 (http://www.sec.gov/CIK)
Statement of Financial Position [Abstract]Period [Axis]
2013-12-31
2012-12-31
Statement of Financial Position [Abstract]
 
 
Fixed maturity securities investments, amortized cost
16,826,700,000  
16,033,100,000  
Equity securities investments, cost
1,168,500,000  
869,900,000  
Fixed maturity securities long-term investment, amortized cost
455,900,000  
426,000,000  
Equity securities long-term investments, cost
27,400,000  
27,100,000  
Preferred stock, par value
0  
0  
Preferred stock, shares authorized
100,000,000  
100,000,000  
Preferred stock, shares issued
0  
0  
Preferred stock, shares outstanding
0  
0  
Common stock, par value
0.01  
0.01  
Common stock, shares authorized
900,000,000  
900,000,000  
Common stock, shares issued
293,273,830  
304,715,144  
Common stock, shares outstanding
293,273,830  
304,715,144