Rendering

Component: (Network and Table)
Network
2415403 - Disclosure - Retirement Benefits (Reconciliation Of The Benefit Obligation) (Details)
(http://www.wellpoint.com/role/RetirementBenefitsReconciliationOfBenefitObligationDetails)
TableSchedule of Defined Benefit Plans Disclosures [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001156039 (http://www.sec.gov/CIK)
Defined Benefit Plan Disclosure [Line Items]Period [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
Pension Plans, Defined Benefit [Member]Other Postretirement Benefit Plans, Defined Benefit [Member]Pension Plans, Defined Benefit [Member]Other Postretirement Benefit Plans, Defined Benefit [Member]Pension Plans, Defined Benefit [Member]Other Postretirement Benefit Plans, Defined Benefit [Member]
Reconciliation of benefit obligation
 
 
 
 
 
 
Benefit obligation at beginning of year
1,948,500,000  
623,000,000  
1,851,300,000  
651,300,000  
 
 
Service cost
14,200,000  
6,700,000  
16,400,000  
6,800,000  
17,300,000  
6,300,000  
Interest cost
67,800,000  
22,400,000  
76,400,000  
27,500,000  
84,700,000  
31,400,000  
Actuarial loss (gain)
(129,900,000) 
4,800,000  
129,600,000  
(28,400,000) 
 
 
Benefits paid
(135,900,000) 
(49,400,000) 
(125,200,000) 
(34,200,000) 
 
 
Benefit obligation at end of year
1,764,700,000  
 
607,500,000  
 
1,948,500,000  
 
623,000,000  
 
1,851,300,000  
 
651,300,000