Rendering

Component: (Network and Table)
Network
2415407 - Disclosure - Retirement Benefits (Components Of Net Periodic Benefit Cost (Benefit Credit) (Details)
(http://www.antheminc.com/role/RetirementBenefitsComponentsOfNetPeriodicBenefitCostBenefitCreditDetails)
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]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Defined Benefit Plans Disclosures, Defined Benefit Plans [Axis]Defined Benefit Plans Disclosures, Defined Benefit Plans [Axis]Defined Benefit Plans Disclosures, Defined Benefit Plans [Axis]
Pension Benefits [Member]Other Benefits [Member]Pension Benefits [Member]Other Benefits [Member]Pension Benefits [Member]Other Benefits [Member]
Service cost
11,600,000  
1,600,000  
13,100,000  
2,100,000  
13,000,000  
3,200,000  
Interest cost
68,500,000  
22,400,000  
68,200,000  
23,400,000  
74,100,000  
26,300,000  
Expected return on assets
(147,100,000) 
(22,400,000) 
(143,200,000) 
(23,700,000) 
(137,500,000) 
(23,400,000) 
Recognized actuarial loss
19,000,000  
12,400,000  
25,700,000  
15,300,000  
21,000,000  
9,400,000  
Amortization of prior service credit
(600,000) 
(13,800,000) 
(600,000) 
(14,400,000) 
(800,000) 
(14,400,000) 
Settlement loss
7,300,000  
 
6,500,000  
 
5,200,000  
 
Net periodic benefit cost (credit)
(41,300,000) 
 
200,000  
 
(30,300,000) 
 
2,700,000  
 
(25,000,000) 
 
1,100,000