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Component: (Network and Table)
Network
2409405 - Disclosure - Investments (Amortized Cost And Fair Value Of Fixed Maturity Securities, By Contractual Maturity) (Details)
(http://www.wellpoint.com/role/InvestmentsAmortizedCostAndFairValueOfFixedMaturitySecuritiesByContractualMaturityDetails)
TableInvestment [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001156039 (http://www.sec.gov/CIK)
Investment [Line Items]Period [Axis]
2013-12-31
2012-12-31
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Axis]Schedule of Fair Value of Separate Accounts by Major Category of Investment [Axis]
Fixed Maturities [Member]Schedule of Fair Value of Separate Accounts by Major Category of Investment, Category [Domain]Fixed Maturities [Member]Schedule of Fair Value of Separate Accounts by Major Category of Investment, Category [Domain]
Amortized Cost
 
 
 
 
Due in one year or less, Amortized Cost
423,900,000  
 
 
 
Due after one year through five years, Amortized Cost
4,580,500,000  
 
 
 
Due after five years through ten years, Amortized Cost
5,105,400,000  
 
 
 
Due after ten years, Amortized Cost
4,424,400,000  
 
 
 
Mortgage-backed securities, Amortized Cost
2,748,400,000  
 
 
 
Available For Sale Securities Amortized Cost
17,282,600,000  
 
18,478,500,000  
 
16,459,100,000  
 
17,356,100,000  
 
Fair Value
 
 
 
 
Due in one year or less, Estimated Fair Value
426,300,000  
 
 
 
Due after one year through five years, Estimated Fair Value
4,712,100,000  
 
 
 
Due after five years through ten years, Estimated Fair Value
5,196,600,000  
 
 
 
Due after ten years, Estimated Fair Value
4,397,600,000  
 
 
 
Mortgage-backed securities, Estimated Fair Value
2,755,500,000  
 
 
 
Available for sale securities Fair Value
17,488,100,000