v3.26.1
Segment reporting - Operating Segment Results (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Segment Reporting [Line Items]        
Gross written premium $ 978.2 $ 948.2 $ 1,981.1 $ 1,932.9
Net written premium 710.3 704.4 1,405.5 1,447.4
Net earned premium 640.3 652.0 1,279.2 1,278.7
Loss and loss adjustment expenses incurred, net 358.2 372.6 721.1 774.4
Acquisition costs, net 156.8 140.9 304.6 270.6
Other underwriting expenses 51.8 48.3 102.3 89.4
Underwriting income (loss) 73.5 90.2 151.2 144.3
Services revenues 30.4 27.3 88.3 57.0
Services expenses 73.7 70.9 144.9 131.5
Net income (loss) attributable to noncontrolling interest 0.1 (0.1) 0.0 (0.5)
Net income available to SiriusPoint 68.6 63.2 170.8 124.8
Segment income (loss) 73.5 90.2 151.2 144.3
Net investment income 65.5 68.2 131.9 139.4
Net investment gains (losses) 7.9 0.7 19.3 0.4
Net corporate and other expenses (73.7) (70.9) (144.9) (131.5)
Intangible asset amortization (2.4) (2.8) (5.0) (5.7)
Interest expense (18.7) (21.1) (35.5) (39.2)
Foreign exchange gains (losses) 1.8 (16.7) 0.5 (14.5)
Income before income tax expense 84.3 74.9 205.8 150.2
Income tax expense (15.8) (11.6) (35.0) (24.9)
Net income (loss) 68.5 63.3 170.8 125.3
Attritional losses 371.9 381.8 747.3 749.9
Catastrophe losses 1.3 (0.5) 6.7 67.4
Prior year loss reserve development (15.0) (8.7) (32.9) (42.9)
Total incurred loss and loss adjustment expenses $ 358.2 $ 372.6 $ 721.1 $ 774.4
Underwriting Ratios:        
Attritional loss ratio 0.580 0.585 0.585 0.587
Catastrophe loss ratio 0.002 (0.001) 0.005 0.053
Prior year loss development ratio (0.023) (0.013) (0.026) (0.034)
Loss ratio 55.90% 57.10% 56.40% 60.60%
Acquisition cost ratio 24.50% 21.60% 23.80% 21.20%
Other underwriting expenses ratio 8.10% 7.40% 8.00% 7.00%
Combined ratio 88.50% 86.10% 88.20% 88.80%
Operating Segments        
Segment Reporting [Line Items]        
Gross written premium $ 981.5 $ 930.1 $ 1,985.3 $ 1,920.0
Net written premium 709.5 699.8 1,406.3 1,451.8
Net earned premium 638.8 645.6 1,277.1 1,271.4
Loss and loss adjustment expenses incurred, net 356.6 365.6 706.3 770.8
Acquisition costs, net 179.9 168.4 351.7 322.8
Other underwriting expenses 47.3 44.0 93.2 81.7
Underwriting income (loss) 55.0 67.6 125.9 96.1
Net income (loss) attributable to noncontrolling interest 0.0 0.0 0.0 0.0
Net income available to SiriusPoint 64.9 76.3 144.2 123.7
Segment income (loss) 64.9 76.3 144.2 123.7
Income before income tax expense 64.9 76.3 144.2 123.7
Income tax expense 0.0 0.0 0.0 0.0
Net income (loss) 64.9 76.3 144.2 123.7
Attritional losses 372.0 379.9 748.5 751.5
Catastrophe losses 1.3 (0.5) 6.7 67.4
Prior year loss reserve development (16.7) (13.8) (48.9) (48.1)
Total incurred loss and loss adjustment expenses $ 356.6 $ 365.6 $ 706.3 $ 770.8
Underwriting Ratios:        
Attritional loss ratio 0.582 0.588 0.586 0.591
Catastrophe loss ratio 0.002 (0.001) 0.005 0.053
Prior year loss development ratio (0.026) (0.021) (0.038) (0.038)
Loss ratio 55.80% 56.60% 55.30% 60.60%
Acquisition cost ratio 28.20% 26.10% 27.50% 25.40%
Other underwriting expenses ratio 7.40% 6.80% 7.30% 6.40%
Combined ratio 91.40% 89.50% 90.10% 92.40%
Operating Segments | Services        
Segment Reporting [Line Items]        
Services revenues $ 59.4 $ 58.1 $ 113.4 $ 120.2
Services expenses 49.6 49.6 95.7 92.7
Net services fee income 9.8 8.5 17.7 27.5
Net income (loss) attributable to noncontrolling interest 0.1 0.2 0.6 0.1
Net income available to SiriusPoint 9.9 8.7 18.3 27.6
Net corporate and other expenses (49.6) (49.6) (95.7) (92.7)
Eliminations        
Segment Reporting [Line Items]        
Gross written premium 0.0 0.0 0.0 0.0
Net written premium 0.0 0.0 0.0 0.0
Net earned premium 0.0 0.0 0.0 0.0
Loss and loss adjustment expenses incurred, net (1.8) (1.5) (3.6) (3.5)
Acquisition costs, net (20.7) (28.2) (44.5) (56.2)
Other underwriting expenses 0.0 0.0 0.0 0.0
Underwriting income (loss) 22.5 29.7 48.1 59.7
Net income (loss) attributable to noncontrolling interest 0.0 0.0 0.0 0.0
Net income available to SiriusPoint (7.3) (2.0) (4.8) (2.2)
Segment income (loss) (7.3) (2.0) (4.8) (2.2)
Income before income tax expense (7.3) (2.0) (4.8) (2.2)
Income tax expense 0.0 0.0 0.0 0.0
Net income (loss) (7.3) (2.0) (4.8) (2.2)
Attritional losses (1.8) (1.5) (3.6) (3.5)
Catastrophe losses 0.0 0.0 0.0 0.0
Prior year loss reserve development 0.0 0.0 0.0 0.0
Total incurred loss and loss adjustment expenses (1.8) (1.5) (3.6) (3.5)
Eliminations | Services        
Segment Reporting [Line Items]        
Services revenues (29.8) (31.7) (52.9) (61.9)
Services expenses 0.0 0.0 0.0 0.0
Net services fee income (29.8) (31.7) (52.9) (61.9)
Net income (loss) attributable to noncontrolling interest 0.0 0.0 0.0 0.0
Net income available to SiriusPoint (29.8) (31.7) (52.9) (61.9)
Net corporate and other expenses 0.0 0.0 0.0 0.0
Corporate        
Segment Reporting [Line Items]        
Gross written premium (3.3) 18.1 (4.2) 12.9
Net written premium 0.8 4.6 (0.8) (4.4)
Net earned premium 1.5 6.4 2.1 7.3
Loss and loss adjustment expenses incurred, net 3.4 8.5 18.4 7.1
Acquisition costs, net (2.4) 0.7 (2.6) 4.0
Other underwriting expenses 4.5 4.3 9.1 7.7
Underwriting income (loss) (4.0) (7.1) (22.8) (11.5)
Services revenues 0.8 0.9 27.8 (1.3)
Services expenses 24.1 21.3 49.2 38.8
Net income (loss) attributable to noncontrolling interest 0.0 (0.3) (0.6) (0.6)
Net income available to SiriusPoint 11.0 (11.1) 31.4 3.3
Segment income (loss) (4.0) (7.1) (22.8) (11.5)
Net investment income 65.5 68.2 131.9 139.4
Net investment gains (losses) 7.9 0.7 19.3 0.4
Net corporate and other expenses (24.1) (21.3) (49.2) (38.8)
Intangible asset amortization (2.4) (2.8) (5.0) (5.7)
Interest expense (18.7) (21.1) (35.5) (39.2)
Foreign exchange gains (losses) 1.8 (16.7) 0.5 (14.5)
Income before income tax expense 26.8 0.8 67.0 28.8
Income tax expense (15.8) (11.6) (35.0) (24.9)
Net income (loss) 11.0 (10.8) 32.0 3.9
Attritional losses 1.7 3.4 2.4 1.9
Prior year loss reserve development 1.7 5.1 16.0 5.2
Total incurred loss and loss adjustment expenses 3.4 8.5 18.4 7.1
Segment Measure Reclass        
Segment Reporting [Line Items]        
Loss and loss adjustment expenses incurred, net 0.0      
Services revenues 29.6 26.4 60.5 58.3
Services expenses 49.6 49.6 95.7 92.7
Net income (loss) attributable to noncontrolling interest 0.1 0.2 0.6 0.1
Net income available to SiriusPoint 0.0 0.0 0.0 0.0
Segment income (loss) 19.9 23.0 34.6 34.3
Net investment gains (losses) 0.0 0.0 0.0 0.0
Net corporate and other expenses (49.6) (49.6) (95.7) (92.7)
Income before income tax expense (0.1) (0.2) (0.6) (0.1)
Income tax expense 0.0 0.0 0.0 0.0
Net income (loss) (0.1) (0.2) (0.6) (0.1)
Attritional losses 0.0      
Total incurred loss and loss adjustment expenses 0.0      
Segment Measure Reclass | Services        
Segment Reporting [Line Items]        
Services revenues (29.6) (26.4) (60.5) (58.3)
Services expenses (49.6) (49.6) (95.7) (92.7)
Net services fee income 20.0 23.2 35.2 34.4
Net income (loss) attributable to noncontrolling interest (0.1) (0.2) (0.6) (0.1)
Net income available to SiriusPoint 19.9 23.0 34.6 34.3
Net corporate and other expenses 49.6 49.6 95.7 92.7
Insurance & Services | Operating Segments        
Segment Reporting [Line Items]        
Gross written premium 644.6 560.4 1,329.2 1,195.5
Net written premium 422.4 392.8 883.5 876.3
Net earned premium 381.7 369.2 761.8 705.4
Loss and loss adjustment expenses incurred, net 216.5 209.2 432.2 419.1
Acquisition costs, net 104.2 97.9 212.2 185.2
Other underwriting expenses 25.6 22.6 51.9 41.5
Underwriting income (loss) 35.4 39.5 65.5 59.6
Segment income (loss) 45.3 48.2 83.8 87.2
Income before income tax expense 45.3 48.2 83.8 87.2
Attritional losses 231.3 218.9 462.1 426.5
Catastrophe losses 1.3 0.0 1.3 4.8
Prior year loss reserve development (16.1) (9.7) (31.2) (12.2)
Total incurred loss and loss adjustment expenses $ 216.5 $ 209.2 $ 432.2 $ 419.1
Underwriting Ratios:        
Attritional loss ratio 0.606 0.593 0.606 0.604
Catastrophe loss ratio 0.003 0 0.002 0.007
Prior year loss development ratio (0.042) (0.026) (0.041) (0.017)
Loss ratio 56.70% 56.70% 56.70% 59.40%
Acquisition cost ratio 27.30% 26.50% 27.90% 26.30%
Other underwriting expenses ratio 6.70% 6.10% 6.80% 5.90%
Combined ratio 90.70% 89.30% 91.40% 91.60%
Insurance & Services | Operating Segments | Services        
Segment Reporting [Line Items]        
Services revenues $ 59.4 $ 58.1 $ 113.4 $ 120.2
Services expenses 49.6 49.6 95.7 92.7
Net services fee income 9.8 8.5 17.7 27.5
Net income (loss) attributable to noncontrolling interest 0.1 0.2 0.6 0.1
Net income available to SiriusPoint 9.9 8.7 18.3 27.6
Net corporate and other expenses (49.6) (49.6) (95.7) (92.7)
Reinsurance | Operating Segments        
Segment Reporting [Line Items]        
Gross written premium 336.9 369.7 656.1 724.5
Net written premium 287.1 307.0 522.8 575.5
Net earned premium 257.1 276.4 515.3 566.0
Loss and loss adjustment expenses incurred, net 140.1 156.4 274.1 351.7
Acquisition costs, net 75.7 70.5 139.5 137.6
Other underwriting expenses 21.7 21.4 41.3 40.2
Underwriting income (loss) 19.6 28.1 60.4 36.5
Segment income (loss) 19.6 28.1 60.4 36.5
Income before income tax expense 19.6 28.1 60.4 36.5
Attritional losses 140.7 161.0 286.4 325.0
Catastrophe losses 0.0 (0.5) 5.4 62.6
Prior year loss reserve development (0.6) (4.1) (17.7) (35.9)
Total incurred loss and loss adjustment expenses $ 140.1 $ 156.4 $ 274.1 $ 351.7
Underwriting Ratios:        
Attritional loss ratio 0.547 0.583 0.556 0.573
Catastrophe loss ratio 0 (0.002) 0.010 0.111
Prior year loss development ratio (0.002) (0.015) (0.034) (0.063)
Loss ratio 54.50% 56.60% 53.20% 62.10%
Acquisition cost ratio 29.40% 25.50% 27.10% 24.30%
Other underwriting expenses ratio 8.40% 7.70% 8.00% 7.10%
Combined ratio 92.30% 89.80% 88.30% 93.50%
Reinsurance | Operating Segments | Services        
Segment Reporting [Line Items]        
Services revenues $ 0.0 $ 0.0 $ 0.0 $ 0.0
Services expenses 0.0 0.0 0.0 0.0
Net services fee income 0.0 0.0 0.0 0.0
Net income (loss) attributable to noncontrolling interest 0.0 0.0 0.0 0.0
Net income available to SiriusPoint 0.0 0.0 0.0 0.0
Net corporate and other expenses $ 0.0 $ 0.0 $ 0.0 $ 0.0