Annual report pursuant to Section 13 and 15(d)

Segment Information (Details)

v2.4.0.8
Segment Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
segments
Dec. 31, 2012
Dec. 31, 2011
Number of reportable segments                 2    
Premium and service revenues from external or internal customers $ 2,931,740 $ 2,795,569 $ 2,610,538 $ 2,525,482 $ 2,272,050 $ 2,308,075 $ 1,967,362 $ 1,562,809 $ 10,863,329 $ 8,110,296 $ 5,211,477
Premium and service revenues                 10,526,040 7,681,631 5,051,902
Earnings (loss) from operations                 277,417 107,966 203,803
Total assets 3,529,300       2,773,905       3,529,300 2,773,905  
External Customer [Member]
                     
Premium and service revenues from external or internal customers                 10,526,040 7,681,631 5,051,902
Internal Customer [Member]
                     
Premium and service revenues from external or internal customers                 0 0 0
Operating Segments [Member] | Medicaid Managed Care [Member]
                     
Premium and service revenues                 9,781,814 7,212,039 4,636,239
Earnings (loss) from operations                 197,844 62,867 161,890
Total assets 2,817,519       2,163,347       2,817,519 2,163,347 1,709,271
Operating Segments [Member] | Specialty Services [Member]
                     
Premium and service revenues                 2,932,520 2,107,007 1,190,474
Earnings (loss) from operations                 79,573 45,099 41,913
Total assets 595,964       371,265       595,964 371,265 383,259
Operating Segments [Member] | External Customer [Member] | Medicaid Managed Care [Member]
                     
Premium and service revenues from external or internal customers                 9,740,720 7,124,720 4,571,430
Operating Segments [Member] | External Customer [Member] | Specialty Services [Member]
                     
Premium and service revenues from external or internal customers                 785,320 556,911 480,472
Operating Segments [Member] | Internal Customer [Member] | Medicaid Managed Care [Member]
                     
Premium and service revenues from external or internal customers                 41,094 87,319 64,809
Operating Segments [Member] | Internal Customer [Member] | Specialty Services [Member]
                     
Premium and service revenues from external or internal customers                 2,147,200 1,550,096 710,002
Intersegment Eliminations [Member]
                     
Premium and service revenues                 (2,188,294) (1,637,415) (774,811)
Earnings (loss) from operations                 0 0 0
Total assets 0             0 0   0
Intersegment Eliminations [Member] | External Customer [Member]
                     
Premium and service revenues from external or internal customers                 0 0 0
Intersegment Eliminations [Member] | Internal Customer [Member]
                     
Premium and service revenues from external or internal customers                 (2,188,294) (1,637,415) (774,811)
Continuing Operations [Member]
                     
Total assets $ 3,413,483       $ 2,534,612       $ 3,413,483 $ 2,534,612 $ 2,092,530