v3.26.1
Earnings Per Share - Computation of Basic and Diluted EPS (Detail) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share [Abstract]        
Net income attributable to SS&C common stockholders $ 234.8 $ 180.8 $ 460.9 $ 393.8
Shares attributable to SS&C:        
Weighted-average common shares outstanding – used in calculation of basic EPS 238.1 244.9 239.8 245.4
Weighted-average common stock equivalents – stock options and restricted shares 3.9 7.3 4.8 8.1
Weighted-average common and common equivalent shares outstanding – used in calculation of diluted EPS 242.0 252.2 244.6 253.5
Earnings per share attributable to SS&C common stockholders - Basic $ 0.99 $ 0.74 $ 1.92 $ 1.6
Earnings per share attributable to SS&C common stockholders - Diluted $ 0.97 $ 0.72 $ 1.88 $ 1.55