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SCHEDULE VI - SUPPLEMENTAL INFORMATION CONCERNING PROPERTY AND CASUALTY INSURANCE OPERATIONS (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
P&C Insurance and Reinsurance (Ark/WM Outrigger) |  |  |
SUPPLEMENTAL INFORMATION FOR PROPERTY AND CASUALTY INSURANCE UNDERWRITERS |  |  |
Current Year | $ 956.9 | $ 914.4 | $ 706.9
Prior Year | (112.7) | (58.6) | 19.9
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Consolidated Property and Casualty Insurance Entity | P&C Insurance and Reinsurance (Ark/WM Outrigger) |  |  |
SUPPLEMENTAL INFORMATION FOR PROPERTY AND CASUALTY INSURANCE UNDERWRITERS |  |  |
Deferred acquisition costs | 211.1 | 165.2 | 145.3
Reserves for Unpaid Claims and Claims Adjustment Expenses | 2,481.0 | 2,127.5 | 1,605.1
Discount, if any, deducted in Column C | 0.0 | 0.0 | 0.0
Unearned Premiums | 1,026.1 | 853.3 | 743.6
Earned Premiums | 1,697.4 | 1,587.8 | 1,409.7
Net investment income | 106.5 | 90.7 | 61.4
Current Year | 956.9 | 914.4 | 706.9
Prior Year | (112.7) | (58.6) | 19.9
Amortization of deferred policy acquisition costs | 374.4 | 294.1 | 273.1
Paid Claims and Claims Adjustment Expenses | 585.7 | 416.7 | 407.9
Net Premiums written | 1,811.6 | 1,679.1 | 1,520.9
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Consolidated Property and Casualty Insurance Entity | Bamboo Captive |  |  |
SUPPLEMENTAL INFORMATION FOR PROPERTY AND CASUALTY INSURANCE UNDERWRITERS |  |  |
Deferred acquisition costs | 0.0 | 10.2 | 0.0
Reserves for Unpaid Claims and Claims Adjustment Expenses | 0.0 | 17.8 | 0.0
Discount, if any, deducted in Column C | 0.0 | 0.0 | 0.0
Unearned Premiums | 0.0 | 31.5 | 0.0
Earned Premiums | 26.7 | 39.4 | 0.0
Net investment income | 1.8 | 1.4 | 0.0
Current Year | 16.0 | 17.3 | 0.0
Prior Year | 2.0 | 3.3 | 0.0
Amortization of deferred policy acquisition costs | 9.7 | 14.1 | 0.0
Paid Claims and Claims Adjustment Expenses | 27.2 | 12.0 | 0.0
Net Premiums written | 16.1 | 50.0 | 0.0
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters, Consolidated Property and Casualty Insurance Entity | Bamboo CRV |  |  |
SUPPLEMENTAL INFORMATION FOR PROPERTY AND CASUALTY INSURANCE UNDERWRITERS |  |  |
Deferred acquisition costs | 2.5 | 5.8 | 0.0
Reserves for Unpaid Claims and Claims Adjustment Expenses | 13.6 | 12.1 | 0.0
Discount, if any, deducted in Column C | 0.0 | 0.0 | 0.0
Unearned Premiums | 9.6 | 29.0 | 0.0
Earned Premiums | 22.2 | 32.7 | 0.0
Net investment income | 1.5 | 0.4 | 0.0
Current Year | 16.2 | 12.1 | 0.0
Prior Year | 3.8 | 0.0 | 0.0
Amortization of deferred policy acquisition costs | 8.3 | 12.1 | 0.0
Paid Claims and Claims Adjustment Expenses | 16.4 | 0.0 | 0.0
Net Premiums written | $ 1.4 | $ 61.7 | $ 0.0

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