v3.25.1
Investments - Schedule of Commercial Mortgage Loans (Details)
$ in Millions
Mar. 31, 2025
USD ($)
loan
Dec. 31, 2024
USD ($)
loan
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial mortgage loans, cost $ 836.1 $ 787.4
Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial mortgage loans, cost $ 218.3 $ 210.1
Composition 100.00% 100.00%
Loan Count | loan 23 17
Apartments | Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial mortgage loans, cost $ 109.5 $ 82.5
Composition 50.20% 39.30%
Loan Count | loan 14 10
Hotel | Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial mortgage loans, cost $ 12.6 $ 12.6
Composition 5.80% 6.00%
Loan Count | loan 1 1
Industrial | Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial mortgage loans, cost $ 32.8 $ 69.2
Composition 15.00% 32.90%
Loan Count | loan 2 3
Office | Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial mortgage loans, cost $ 44.1 $ 26.0
Composition 20.20% 12.40%
Loan Count | loan 4 1
Retail | Mortgage Loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Commercial mortgage loans, cost $ 19.3 $ 19.8
Composition 8.80% 9.40%
Loan Count | loan 2 2