XML 123 R77.htm IDEA: XBRL DOCUMENT v3.6.0.2
Medical Claims and Benefits Payable (Details)
$ in Millions
 12 Months Ended
Aug. 01, 2016
member
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
member
Dec. 31, 2014
USD ($)
member
Insurance Claims [Line Items]        
Medical claims and benefits payable | $   $ 225 $ 167 $ 119
Reinsurance recoverable for unpaid claims | $   61 46 9
Prior period claims expense (benefit) recognized | $   $ (192) $ (141) $ (46)
Minimum        
Insurance Claims [Line Items]        
Estimated discount percentage of final payment on claims incurred but not paid   8.00%    
Maximum        
Insurance Claims [Line Items]        
Estimated discount percentage of final payment on claims incurred but not paid   10.00%    
Ohio | Medicaid Expansion        
Insurance Claims [Line Items]        
Number of members added, approximately (in member)       61,000
Ohio | MMP Program        
Insurance Claims [Line Items]        
Number of members added, approximately (in member)       17,000
California | Medicaid Expansion        
Insurance Claims [Line Items]        
Number of members added, approximately (in member)     55,000 100,000
Today's Options Of New York, Inc. | New York | Medicaid        
Insurance Claims [Line Items]        
Number of members added, approximately (in member) 35,000