v3.26.1
Segment Information - Reconciliation of Segment Expenses (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Information        
Benefits, claims and settlement expenses $ 1,992.1 $ 1,839.9 $ 3,603.2 $ 4,059.9
Liability for future policy benefit remeasurement (gain) loss (7.4) 4.3 7.3 2.1
Market risk benefit remeasurement (gain) loss 14.5 (14.3) (26.0) (49.0)
Dividends to policyholders 23.9 22.9 54.5 42.0
Operating expenses 1,400.6 1,295.4 2,780.4 2,686.4
Total expenses 3,409.5 3,168.2 6,456.8 6,835.2
Operating Segments        
Segment Information        
Total segment expenses 3,324.7 3,092.8 6,281.3 6,616.8
Operating Segments | Retirement and Income Solutions        
Segment Information        
Benefits, claims and settlement expenses 1,100.3 1,006.2 1,873.4 2,360.1
Liability for future policy benefit remeasurement (gain) loss 4.3 (3.6) (1.0) (8.4)
Market risk benefit remeasurement (gain) loss (2.3) 1.8 (1.9) 3.7
Dividends to policyholders 0.1   0.1  
Commission expense 74.9 72.5 143.5 142.0
Capitalization of deferred acquisition costs and contract costs (38.4) (40.5) (74.1) (81.4)
Amortization of deferred acquisition costs and contract costs 22.9 21.1 45.9 42.2
Depreciation and amortization 20.2 18.7 37.8 38.1
Compensation and other 376.0 350.0 751.2 720.8
Operating expenses 455.6 421.8 904.3 861.7
Total segment expenses 1,558.0 1,426.2 2,774.9 3,217.1
Operating Segments | Principal Asset Management        
Segment Information        
Benefits, claims and settlement expenses 140.8 82.2 193.5 172.8
Liability for future policy benefit remeasurement (gain) loss (0.6) (0.6) 0.4 (0.1)
Commission expense 51.9 48.2 102.3 96.3
Capitalization of deferred acquisition costs and contract costs (9.8) (8.4) (19.0) (16.1)
Amortization of deferred acquisition costs and contract costs 9.0 6.4 17.3 12.2
Depreciation and amortization 13.4 13.9 27.6 27.8
Interest expense on corporate debt 0.3 0.4 0.7 0.9
Compensation and other 326.4 321.0 680.2 663.8
Operating expenses 391.2 381.5 809.1 784.9
Total segment expenses 531.4 463.1 1,003.0 957.6
Operating Segments | Benefits and Protection        
Segment Information        
Benefits, claims and settlement expenses 704.6 719.1 1,398.6 1,418.4
Liability for future policy benefit remeasurement (gain) loss 2.3 (3.7) (8.3) (4.1)
Dividends to policyholders 23.8 22.9 54.4 42.0
Commission expense 128.3 135.7 270.7 286.7
Capitalization of deferred acquisition costs and contract costs (77.2) (74.4) (162.5) (161.7)
Amortization of deferred acquisition costs and contract costs 65.4 64.4 130.1 128.4
Depreciation and amortization 4.5 4.4 8.5 8.7
Compensation and other 238.1 230.3 482.0 475.0
Operating expenses 359.1 360.4 728.8 737.1
Total segment expenses 1,089.8 1,098.7 2,173.5 2,193.4
Operating Segments | Corporate        
Segment Information        
Benefits, claims and settlement expenses (1.2) (0.8) 31.3 22.8
Commission expense 43.7 24.9 86.2 48.7
Depreciation and amortization 3.1 4.2 6.9 8.3
Interest expense on corporate debt 45.2 45.2 88.6 87.4
Compensation and other 54.7 31.3 116.9 81.5
Operating expenses 146.7 105.6 298.6 225.9
Total segment expenses 145.5 104.8 329.9 248.7
Reconciling items        
Segment Information        
Net realized capital gains (losses) expense adjustments 45.6 37.4 94.2 65.2
Market risk benefit derivative settlements (7.6) (11.0) (15.3) (22.1)
Expenses from exited business 46.8 49.0 96.6 175.3
Total expenses $ 3,409.5 $ 3,168.2 $ 6,456.8 $ 6,835.2