Rendering

Component: (Network and Table)
Network
2411403 - Disclosure - Fair Value (Reconciliation Of The Beginning And Ending Balances Of Assets Measured At Fair Value On A Recurring Basis Using Level III Inputs) (Details)
(http://www.antheminc.com/role/FairValueReconciliationOfBeginningAndEndingBalancesOfAssetsMeasuredAtFairValueOnRecurringBasisUsingLevelIiiInputsDetails)
TableFair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001156039 (http://www.sec.gov/CIK)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Major Types Of Debt And Equity Securities [Axis]Major Types Of Debt And Equity Securities [Axis]Major Types Of Debt And Equity Securities [Axis]
Corporate Securities [Member]Residential Mortgage-Backed Securities [Member]Commercial Mortgage-Backed Securities [Member]Other Debt Securities [Member]Equity Securities [Member]Major Types of Debt and Equity Securities [Domain]Corporate Securities [Member]Residential Mortgage-Backed Securities [Member]Commercial Mortgage-Backed Securities [Member]Other Debt Securities [Member]Equity Securities [Member]Major Types of Debt and Equity Securities [Domain]Corporate Securities [Member]Residential Mortgage-Backed Securities [Member]Commercial Mortgage-Backed Securities [Member]Other Debt Securities [Member]Equity Securities [Member]Major Types of Debt and Equity Securities [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
186,200,000  
0  
1,900,000  
25,600,000  
102,100,000  
315,800,000  
144,600,000  
0  
3,300,000  
6,600,000  
48,300,000  
202,800,000  
115,200,000  
0  
6,500,000  
14,800,000  
41,400,000  
177,900,000  
Gains (losses) recognized in net income
(2,900,000) 
0  
0  
0  
700,000  
(2,200,000) 
1,400,000  
0  
0  
200,000  
(1,500,000) 
100,000  
(4,400,000) 
0  
0  
0  
(700,000) 
(5,100,000) 
Gains (losses) recognized in accumulated other comprehensive loss/income
(2,000,000) 
0  
0  
(500,000) 
(500,000) 
(3,000,000) 
700,000  
0  
0  
(200,000) 
3,900,000  
4,400,000  
8,500,000  
0  
0  
400,000  
2,800,000  
11,700,000  
Purchases
170,200,000  
4,300,000  
0  
0  
222,600,000  
397,100,000  
132,600,000  
0  
1,100,000  
28,300,000  
52,100,000  
214,100,000  
68,900,000  
0  
3,600,000  
6,500,000  
15,900,000  
94,900,000  
Sales
(5,400,000) 
0  
0  
0  
(136,700,000) 
(142,100,000) 
(11,700,000) 
0  
(1,100,000) 
(900,000) 
(13,800,000) 
(27,500,000) 
(48,000,000) 
0  
0  
(3,600,000) 
(10,600,000) 
(62,200,000) 
Settlements
(56,800,000) 
0  
0  
(900,000) 
(400,000) 
(58,100,000) 
(51,600,000) 
0  
(1,400,000) 
(200,000) 
0  
(53,200,000) 
(11,000,000) 
0  
(3,700,000) 
(400,000) 
0  
(15,100,000) 
Transfers into Level III
6,600,000  
9,300,000  
0  
28,800,000  
0  
44,700,000  
4,800,000  
0  
0  
0  
13,100,000  
17,900,000  
24,800,000  
0  
0  
0  
0  
24,800,000  
Transfers out of Level III
(57,100,000) 
(1,600,000) 
(1,900,000) 
(10,200,000) 
0  
(70,800,000) 
(34,600,000) 
0  
0  
(8,200,000) 
0  
(42,800,000) 
(9,400,000) 
0  
(3,100,000) 
(11,100,000) 
(500,000) 
(24,100,000) 
Ending balance
238,800,000  
 
12,000,000  
 
0  
 
42,800,000  
 
187,800,000  
 
481,400,000  
 
186,200,000  
 
0  
 
1,900,000  
 
25,600,000  
 
102,100,000  
 
315,800,000  
 
144,600,000  
 
0  
 
3,300,000  
 
6,600,000  
 
48,300,000  
 
202,800,000  
 
Change in unrealized losses included in net income related to assets still held
(2,000,000) 
0  
0  
0  
0  
(2,000,000) 
(600,000) 
0  
0  
0  
(1,400,000) 
(2,000,000) 
(11,100,000) 
0  
0  
0  
(700,000) 
(11,800,000)