Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.2.0.727
Segment Information (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
segment
Jun. 30, 2014
USD ($)
Number of reportable segments | segment     2  
Revenues $ 5,506 $ 4,024 $ 10,637 $ 7,484
Premium and service revenues 5,184 3,741 9,945 7,093
Earnings from operations 173 93 302 163
Intersegment Eliminations [Member]        
Premium and service revenues (1,201) (689) (2,300) (1,341)
Earnings from operations 0 0 0 0
Operating Segments [Member] | Medicaid Managed Care [Member]        
Premium and service revenues 4,672 3,238 8,939 6,221
Earnings from operations 125 64 220 108
Operating Segments [Member] | Specialty Services [Member]        
Premium and service revenues 1,713 1,192 3,306 2,213
Earnings from operations 48 29 82 55
Internal Customer [Member]        
Revenues 0 0 0 0
Internal Customer [Member] | Intersegment Eliminations [Member]        
Revenues (1,201) (689) (2,300) (1,341)
Internal Customer [Member] | Operating Segments [Member] | Medicaid Managed Care [Member]        
Revenues 25 13 49 26
Internal Customer [Member] | Operating Segments [Member] | Specialty Services [Member]        
Revenues 1,176 676 2,251 1,315
External Customer [Member]        
Revenues 5,184 3,741 9,945 7,093
External Customer [Member] | Intersegment Eliminations [Member]        
Revenues 0 0 0 0
External Customer [Member] | Operating Segments [Member] | Medicaid Managed Care [Member]        
Revenues 4,647 3,225 8,890 6,195
External Customer [Member] | Operating Segments [Member] | Specialty Services [Member]        
Revenues $ 537 $ 516 $ 1,055 $ 898