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Investments - Mortgage Loan Valuation Allowance (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Direct financing leases, Changes in financing receivable valuation allowance |  |  |  |  |  |
Beginning balance, Direct financing lease valuation allowance | $ 3.1 | $ 1.9 | $ 3.0 | $ 0.9 |  |
Provision: Direct financing lease valuation allowance | 4.5 | 1.3 | 4.4 | 2.4 |  |
Foreign currency translation adjustment: Direct financing lease valuation allowance | (0.1) | 0.2 | 0.1 | 0.1 |  |
Ending balance, Direct financing lease valuation allowance | 7.5 | 3.4 | 7.5 | 3.4 |  |
Total, Changes in financing receivable valuation allowance |  |  |  |  |  |
Beginning balance valuation allowance | 216.9 | 179.4 | 202.2 | 139.6 |  |
Provision | 17.3 | 52.3 | 27.7 | 104.0 |  |
Charge-offs | (0.2) | (38.2) | (1.6) | (50.1) |  |
Recoveries | 0.1 | 0.3 | 5.3 | 0.7 |  |
Foreign currency translation adjustment | (0.3) | 0.4 | 0.2 |  |  |
Ending balance valuation allowance | 233.8 | 194.2 | 233.8 | 194.2 |  |
Allowance recorded | 233.8 | 194.2 | 233.8 | 194.2 |  |
Accrued interest receivable written off |  |  | 0.3 |  |  |
Commercial mortgage loans |  |  |  |  |  |
Mortgage loans and reinsurance recoverables, Changes in financing receivable valuation allowance |  |  |  |  |  |
Beginning balance, Financing receivable valuation allowance | 196.1 | 165.0 | 188.6 | 128.8 |  |
Provision: Financing receivable valuation allowance | 8.5 | 52.1 | 16.7 | 100.3 |  |
Charge-offs: Financing receivable valuation allowance |  | (38.1) | (1.3) | (49.9) |  |
Recoveries: Financing receivable valuation allowance | 0.1 |  | 0.5 |  |  |
Foreign currency translation adjustment: Financing receivable valuation allowance | (0.1) | 0.1 | 0.1 | (0.1) |  |
Ending balance, Financing receivable valuation allowance | 204.6 | 179.1 | $ 204.6 | 179.1 |  |
Total, Changes in financing receivable valuation allowance |  |  |  |  |  |
Mortgage loans, Days delinquent to be analyzed for valuation allowance |  |  | 60 days |  |  |
Accrued interest receivable written off |  |  | $ 0.3 |  |  |
Residential mortgage loans |  |  |  |  |  |
Mortgage loans and reinsurance recoverables, Changes in financing receivable valuation allowance |  |  |  |  |  |
Beginning balance, Financing receivable valuation allowance | 14.5 | 9.4 | 7.3 | 6.7 |  |
Provision: Financing receivable valuation allowance | 4.2 | (1.1) | 6.6 | 1.4 |  |
Charge-offs: Financing receivable valuation allowance | (0.2) | (0.1) | (0.3) | (0.2) |  |
Recoveries: Financing receivable valuation allowance |  | 0.3 | 4.8 | 0.7 |  |
Foreign currency translation adjustment: Financing receivable valuation allowance | (0.1) | 0.1 |  |  |  |
Ending balance, Financing receivable valuation allowance | 18.4 | 8.6 | $ 18.4 | 8.6 |  |
Total, Changes in financing receivable valuation allowance |  |  |  |  |  |
Mortgage loans, Days delinquent to be analyzed for valuation allowance |  |  | 60 days |  |  |
Reinsurance recoverables |  |  |  |  |  |
Mortgage loans and reinsurance recoverables, Changes in financing receivable valuation allowance |  |  |  |  |  |
Beginning balance, Financing receivable valuation allowance | 3.2 | 3.1 | $ 3.3 | 3.2 |  |
Provision: Financing receivable valuation allowance | 0.1 |  |  | (0.1) |  |
Ending balance, Financing receivable valuation allowance | 3.3 | 3.1 | $ 3.3 | $ 3.1 |  |
Other loans |  |  |  |  |  |
Total, Changes in financing receivable valuation allowance |  |  |  |  |  |
Beginning balance valuation allowance | $ 0.0 | $ 0.0 |  |  |  |
Allowance recorded |  |  |  |  | $ 0.0 | $ 0.0

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- Definition The numbers of days for which a mortgage loan has been delinquent such that it is analyzed to determine if a valuation allowance is needed. + References No definition available. + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on net investment in direct financing lease from foreign currency translation gain (loss). + References No definition available. + Details
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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Includes net investment in direct financing lease. + References No definition available. + Details
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