v3.26.3
Revenues from Contracts with Customers - Disaggregation within Segments, Retirement and Income Solution (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Revenues from Contracts with Customers - Disaggregation of Revenues        
Total fees and other revenues $ 1,144.1 $ 1,128.7 $ 3,407.4 $ 3,289.0
Premiums and other considerations 1,897.9 1,532.8 4,506.8 4,680.6
Net investment income 1,160.8 1,200.5 3,661.6 3,529.0
Operating Segments        
Revenues from Contracts with Customers - Disaggregation of Revenues        
Total revenues from contracts with customers 752.4 779.8 2,309.3 2,275.6
Operating Segments | Retirement and Income Solutions        
Revenues from Contracts with Customers - Disaggregation of Revenues        
Total revenues from contracts with customers 147.1 155.4 479.6 449.3
Fees and other revenues not within the scope of revenue recognition guidance 324.9 303.9 913.8 885.4
Total fees and other revenues 472.0 459.3 1,393.4 1,334.7
Premiums and other considerations 889.6 566.5 1,549.4 1,824.0
Net investment income 932.8 860.4 2,752.0 2,521.0
Total operating revenues 2,294.4 1,886.2 5,694.8 5,679.7
Operating Segments | Retirement and Income Solutions | Administrative service fee revenue        
Revenues from Contracts with Customers - Disaggregation of Revenues        
Total revenues from contracts with customers 141.1 150.5 462.5 435.3
Operating Segments | Retirement and Income Solutions | Deposit account fee revenue        
Revenues from Contracts with Customers - Disaggregation of Revenues        
Total revenues from contracts with customers 3.6 3.3 10.6 9.9
Operating Segments | Retirement and Income Solutions | Commission income        
Revenues from Contracts with Customers - Disaggregation of Revenues        
Total revenues from contracts with customers $ 2.4 $ 1.6 $ 6.5 $ 4.1