v3.26.3
Segment Information - Segment Pre-Tax Operating Earnings (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Information        
Income (loss) before income taxes $ 838.8 $ 248.4 $ 1,816.9 $ 780.4
Operating Segments        
Segment Information        
Segment pre-tax operating earnings (losses) 587.5 579.9 1,814.8 1,659.9
Operating Segments | Retirement and Income Solutions        
Segment Information        
Segment pre-tax operating earnings (losses) 297.8 310.3 923.2 886.1
Operating Segments | Principal Asset Management        
Segment Information        
Segment pre-tax operating earnings (losses) 230.5 274.7 695.4 698.6
Operating Segments | Benefits and Protection        
Segment Information        
Segment pre-tax operating earnings (losses) 169.7 86.5 523.8 353.6
Operating Segments | Corporate        
Segment Information        
Segment pre-tax operating earnings (losses) (110.5) (91.6) (327.6) (278.4)
Reconciling items        
Segment Information        
Pre-tax net realized capital gains (losses), as adjusted (186.6) 7.5 (361.3) (166.7)
Pre-tax income (loss) from exited business 471.9 (318.7) 437.1 (666.1)
Pre-tax earnings (loss) related to actuarial assumption review (6.4)   (6.4)  
Adjustments related to equity method investments and noncontrolling interest $ (27.6) $ (20.3) $ (67.3) $ (46.7)