v3.26.1
Segment Information - Reconciliation of Segment Operating Revenues Consolidated (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Information        
Total revenues $ 3,905.8 $ 3,671.3 $ 7,434.9 $ 7,367.2
Operating Segments        
Segment Information        
Revenue from contracts with external customers 2,604.5 2,477.6 4,867.8 5,305.2
Adjustments for revenue from contracts with external customers not included in operating revenues (10.0) (8.5) (21.9) (19.1)
Net investment income included in operating revenues 1,345.9 1,175.6 2,539.6 2,327.4
Operating revenues from equity method investments 54.0 44.9 124.7 89.4
Total revenues 3,994.4 3,689.6 7,510.2 7,702.9
Operating Segments | Retirement and Income Solutions        
Segment Information        
Revenue from contracts with external customers 967.5 888.8 1,598.3 2,147.8
Adjustments for revenue from contracts with external customers not included in operating revenues (18.0) (17.1) (35.7) (34.5)
Net investment income included in operating revenues 932.0 838.5 1,835.0 1,660.5
Total revenues 1,881.4 1,718.3 3,400.4 3,793.5
Operating Segments | Principal Asset Management        
Segment Information        
Revenue from contracts with external customers 459.7 460.8 915.3 910.8
Net investment income included in operating revenues 194.3 119.1 270.4 236.7
Operating revenues from equity method investments 54.1 45.0 124.9 89.6
Total revenues 791.4 703.4 1,474.7 1,390.2
Operating Segments | Benefits and Protection        
Segment Information        
Revenue from contracts with external customers 1,084.8 1,065.3 2,174.1 2,120.8
Adjustments for revenue from contracts with external customers not included in operating revenues 8.0 8.6 13.8 15.4
Net investment income included in operating revenues 179.2 170.5 335.4 320.3
Total revenues 1,273.9 1,246.3 2,527.6 2,460.5
Operating Segments | Corporate        
Segment Information        
Revenue from contracts with external customers 92.5 62.7 180.1 125.8
Net investment income included in operating revenues 40.4 47.5 98.8 109.9
Operating revenues from equity method investments (0.1) (0.1) (0.2) (0.2)
Total revenues 47.7 21.6 107.5 58.7
Inter-segment eliminations        
Segment Information        
Inter-segment revenues 166.6 168.3 329.7 335.7
Total revenues (166.6) (168.3) (329.7) (335.7)
Inter-segment eliminations | Retirement and Income Solutions        
Segment Information        
Inter-segment revenues (0.1) 8.1 2.8 19.7
Inter-segment eliminations | Principal Asset Management        
Segment Information        
Inter-segment revenues 83.3 78.5 164.1 153.1
Inter-segment eliminations | Benefits and Protection        
Segment Information        
Inter-segment revenues 1.9 1.9 4.3 4.0
Inter-segment eliminations | Corporate        
Segment Information        
Inter-segment revenues 81.5 79.8 158.5 158.9
Total revenues (166.6) (168.3) (329.7) (335.7)
Reconciling items        
Segment Information        
Net realized capital gains (losses), net of related revenue adjustments 56.3 (7.3) (80.5) (109.0)
Revenues from exited business (119.7) 15.9 61.8 (172.1)
Adjustments related to equity method investments (17.6) (15.9) (41.3) (32.5)
Market risk benefit derivative settlements $ (7.6) $ (11.0) $ (15.3) $ (22.1)