v3.26.1
INVESTMENTS IN VARIABLE INTEREST ENTITIES - BALANCE SHEET ITEMS (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Assets:    
Investments held by variable interest entities $ 292.3 $ 293.0
Cash and cash equivalents held by variable interest entities 16.3 27.4
Accrued investment income 302.5 286.0
Income tax assets, net 709.7 713.3
Total assets 39,861.2 38,790.6
Liabilities:    
Other liabilities 957.1 952.8
Borrowings related to variable interest entities 274.5 274.4
Total liabilities 37,269.6 36,152.4
Variable Interest Entity, Primary Beneficiary    
Assets:    
Investments held by variable interest entities 292.3 293.0
Notes receivable of VIEs held by subsidiaries (107.8) (107.8)
Cash and cash equivalents held by variable interest entities 16.3 27.4
Accrued investment income 1.0 1.0
Income tax assets, net 17.1 16.0
Other assets (0.3) 0.4
Total assets 218.6 230.0
Liabilities:    
Other liabilities 8.6 15.8
Borrowings related to variable interest entities 274.5 274.4
Notes payable of VIEs held by subsidiaries 0.0 0.0
Total liabilities 283.1 290.2
Variable Interest Entity, Primary Beneficiary | VIEs    
Assets:    
Investments held by variable interest entities 292.3 293.0
Notes receivable of VIEs held by subsidiaries 0.0 0.0
Cash and cash equivalents held by variable interest entities 16.3 27.4
Accrued investment income 1.0 1.0
Income tax assets, net 17.1 16.0
Other assets 0.0 0.6
Total assets 326.7 338.0
Liabilities:    
Other liabilities 9.2 16.7
Borrowings related to variable interest entities   274.4
Notes payable of VIEs held by subsidiaries 107.8 107.8
Total liabilities 391.5 398.9
Variable Interest Entity, Primary Beneficiary | Eliminations    
Assets:    
Investments held by variable interest entities 0.0 0.0
Notes receivable of VIEs held by subsidiaries (107.8) (107.8)
Cash and cash equivalents held by variable interest entities 0.0 0.0
Accrued investment income 0.0 0.0
Income tax assets, net 0.0 0.0
Other assets (0.3) (0.2)
Total assets (108.1) (108.0)
Liabilities:    
Other liabilities (0.6) (0.9)
Borrowings related to variable interest entities 0.0 0.0
Notes payable of VIEs held by subsidiaries (107.8) (107.8)
Total liabilities $ (108.4) $ (108.7)