v3.8.0.1
Health Net - Schedule of Unaudited Pro Forma Financial Information (Details) - Health Net, Inc. - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended 12 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]      
Revenue of acquiree since acquisition date, actual $ 13,454    
Total revenues   $ 44,280 $ 38,826
Net earnings attributable to Centene Corporation     $ 245
Diluted earnings per share (in usd per share)     $ 1.43