v3.26.1
Fair Value Measurements - Carrying Values and Fair Value Estimates (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financial Assets, Carrying Value    
Mortgage Loans $ 151.0 $ 149.8
Company-Owned Life Insurance 598.2 579.2
Equity Securities at Modified Cost 18.6 21.7
Financial Liabilities, Carrying Value    
Long-term debt 944.5 943.5
Policyholder Obligations 541.1 608.0
Financial Assets, Fair Value    
Short-term Investments 271.4 313.5
Company-Owned Life Insurance 598.2 579.2
Equity Securities at Modified Cost 18.6 21.7
Financial Liabilities, Fair Value    
Long-term Debt 852.0 868.0
Consolidated Entity, Excluding VIE    
Financial Assets, Carrying Value    
Loans to Policyholders 279.4 279.9
Short-term Investments 271.4 313.5
Company-Owned Life Insurance 598.2 579.2
Financial Assets, Fair Value    
Company-Owned Life Insurance 598.2 579.2
Federal Home Loan Bank of Chicago    
Financial Liabilities, Fair Value    
Policyholder Obligations 448.4 513.8
Federal Home Loan Bank of Chicago | United Insurance Company of America    
Financial Liabilities, Carrying Value    
Policyholder Obligations 448.4 513.8
Loans to Policyholders    
Financial Assets, Fair Value    
Loans 279.4 279.9
Mortgage Loans    
Financial Assets, Fair Value    
Loans $ 151.0 $ 149.8