v3.25.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Net Income (Loss) Attributable to Parent [Abstract]    
Earnings attributable to Centene Corporation $ 1,311 $ 1,163
Shares used in computing per share amounts:    
Weighted average number of common shares outstanding (in shares) 496,214 535,109
Common stock equivalents (as determined by applying the treasury stock method) (in shares) 1,966 2,951
Weighted average number of common shares and potential dilutive common shares outstanding (in shares) 498,180 538,060
Net earnings per common share attributable to Centene Corporation:    
Basic earnings per common share (in dollars per share) $ 2.64 $ 2.17
Diluted earnings per common share (in dollars per share) $ 2.63 $ 2.16
Anti-dilutive stock options, restricted stock and restricted stock units excluded from the calculation of diluted earnings (loss) per common share (in shares) 2,380 684