v3.26.3
Segment Information - Reconciliation of Segment Operating Revenues Consolidated (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Information        
Total revenues $ 4,616.4 $ 3,681.6 $ 12,051.3 $ 11,048.8
Operating Segments        
Segment Information        
Revenue from contracts with external customers 3,039.8 2,659.5 7,907.6 7,964.7
Adjustments for revenue from contracts with external customers not included in operating revenues (9.7) (11.9) (31.6) (31.0)
Net investment income included in operating revenues 1,169.7 1,181.8 3,709.3 3,509.2
Operating revenues from equity method investments 75.2 68.6 199.9 158.0
Total revenues 4,275.0 3,898.0 11,785.2 11,600.9
Operating Segments | Retirement and Income Solutions        
Segment Information        
Revenue from contracts with external customers 1,370.3 1,033.5 2,968.6 3,181.3
Adjustments for revenue from contracts with external customers not included in operating revenues (17.7) (17.7) (53.4) (52.2)
Net investment income included in operating revenues 947.9 861.3 2,782.9 2,521.8
Total revenues 2,294.4 1,886.2 5,694.8 5,679.7
Operating Segments | Principal Asset Management        
Segment Information        
Revenue from contracts with external customers 454.5 471.8 1,369.8 1,382.6
Net investment income included in operating revenues 33.1 106.3 303.5 343.0
Operating revenues from equity method investments 75.3 68.7 200.2 158.3
Total revenues 647.4 727.1 2,122.1 2,117.3
Operating Segments | Benefits and Protection        
Segment Information        
Revenue from contracts with external customers 1,121.0 1,083.7 3,295.1 3,204.5
Adjustments for revenue from contracts with external customers not included in operating revenues 8.0 5.8 21.8 21.2
Net investment income included in operating revenues 165.3 168.6 500.7 488.9
Total revenues 1,296.4 1,260.5 3,824.0 3,721.0
Operating Segments | Corporate        
Segment Information        
Revenue from contracts with external customers 94.0 70.5 274.1 196.3
Net investment income included in operating revenues 23.4 45.6 122.2 155.5
Operating revenues from equity method investments (0.1) (0.1) (0.3) (0.3)
Total revenues 36.8 24.2 144.3 82.9
Inter-segment eliminations        
Segment Information        
Inter-segment revenues 172.6 169.7 502.3 505.4
Total revenues (172.6) (169.7) (502.3) (505.4)
Inter-segment eliminations | Retirement and Income Solutions        
Segment Information        
Inter-segment revenues (6.1) 9.1 (3.3) 28.8
Inter-segment eliminations | Principal Asset Management        
Segment Information        
Inter-segment revenues 84.5 80.3 248.6 233.4
Inter-segment eliminations | Benefits and Protection        
Segment Information        
Inter-segment revenues 2.1 2.4 6.4 6.4
Inter-segment eliminations | Corporate        
Segment Information        
Inter-segment revenues 92.1 77.9 250.6 236.8
Total revenues (172.6) (169.7) (502.3) (505.4)
Reconciling items        
Segment Information        
Net realized capital gains (losses), net of related revenue adjustments (140.5) 87.5 (221.0) (21.5)
Revenues from exited business 516.8 (271.3) 578.6 (443.4)
Adjustments related to equity method investments (27.6) (22.5) (68.9) (55.0)
Market risk benefit derivative settlements $ (7.3) $ (10.1) $ (22.6) $ (32.2)