v3.26.1
Earnings per share available to SiriusPoint common shareholders - Computation of Basic and Diluted Earnings Per Share available to SiriusPoint Common Shareholders (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Weighted-average number of common shares outstanding:        
Basic number of common shares outstanding (in shares) 116,732,354 116,523,435 116,728,906 116,252,739
Diluted number of common shares outstanding (in shares) 119,011,731 118,669,471 120,237,742 118,598,535
Basic earnings per common share:        
Net income available to SiriusPoint common shareholders $ 68.6 $ 59.2 $ 168.2 $ 116.8
Net income allocated to SiriusPoint participating shareholders 0.0 (0.1) (0.1) (0.1)
Net income allocated to SiriusPoint common shareholders $ 68.6 $ 59.1 $ 168.1 $ 116.7
Basic earnings per share available to SiriusPoint common shareholders (in dollars per share) $ 0.59 $ 0.51 $ 1.44 $ 1.00
Diluted earnings per common share:        
Net income available to SiriusPoint common shareholders $ 68.6 $ 59.2 $ 168.2 $ 116.8
Net income allocated to SiriusPoint participating shareholders 0.0 (0.1) (0.1) (0.1)
Net income allocated to SiriusPoint common shareholders $ 68.6 $ 59.1 $ 168.1 $ 116.7
Diluted earnings per share available to SiriusPoint common shareholders (in dollars per share) $ 0.58 $ 0.50 $ 1.40 $ 0.98
Restricted share awards and units        
Weighted-average number of common shares outstanding:        
Dilutive effect of restricted share awards and units and options (in shares) 932,651 893,262 2,195,990 1,169,673
Options        
Weighted-average number of common shares outstanding:        
Dilutive effect of restricted share awards and units and options (in shares) 1,346,726 1,252,774 1,312,846 1,176,123