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Insurance - Short-duration insurance contracts, historical claims duration (Details) - Property and casualty insurance | Dec. 31, 2024
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Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Line Items] |
Year 1 | 29.70%
Year 2 | 24.60%
Year 3 | 12.20%
Year 4 | 9.10%
Year 5 | 6.50%
Year 6 | 4.50%
Year 7 | 3.10%
Year 8 | 2.20%
Year 9 | 1.20%
Year 10 | 0.70%
Year 1, Cumulative | 29.70%
Year 2, Cumulative | 54.30%
Year 3, Cumulative | 66.50%
Year 4, Cumulative | 75.60%
Year 5, Cumulative | 82.10%
Year 6, Cumulative | 86.60%
Year 7, Cumulative | 89.70%
Year 8, Cumulative | 91.90%
Year 9, Cumulative | 93.10%
Year 10, Cumulative | 93.80%
Property and transportation |
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Line Items] |
Year 1 | 45.10%
Year 2 | 31.30%
Year 3 | 8.30%
Year 4 | 5.50%
Year 5 | 3.70%
Year 6 | 2.20%
Year 7 | 1.30%
Year 8 | 1.00%
Year 9 | 0.50%
Year 10 | 0.10%
Year 1, Cumulative | 45.10%
Year 2, Cumulative | 76.40%
Year 3, Cumulative | 84.70%
Year 4, Cumulative | 90.20%
Year 5, Cumulative | 93.90%
Year 6, Cumulative | 96.10%
Year 7, Cumulative | 97.40%
Year 8, Cumulative | 98.40%
Year 9, Cumulative | 98.90%
Year 10, Cumulative | 99.00%
Specialty casualty |
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Line Items] |
Year 1 | 15.90%
Year 2 | 20.60%
Year 3 | 15.40%
Year 4 | 12.10%
Year 5 | 8.80%
Year 6 | 6.10%
Year 7 | 4.30%
Year 8 | 3.20%
Year 9 | 1.70%
Year 10 | 1.20%
Year 1, Cumulative | 15.90%
Year 2, Cumulative | 36.50%
Year 3, Cumulative | 51.90%
Year 4, Cumulative | 64.00%
Year 5, Cumulative | 72.80%
Year 6, Cumulative | 78.90%
Year 7, Cumulative | 83.20%
Year 8, Cumulative | 86.40%
Year 9, Cumulative | 88.10%
Year 10, Cumulative | 89.30%
Specialty financial |
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Line Items] |
Year 1 | 52.20%
Year 2 | 25.40%
Year 3 | 9.80%
Year 4 | 2.60%
Year 5 | 1.00%
Year 6 | 0.60%
Year 7 | 1.30%
Year 8 | 0.50%
Year 9 | (0.40%)
Year 10 | (0.80%)
Year 1, Cumulative | 52.20%
Year 2, Cumulative | 77.60%
Year 3, Cumulative | 87.40%
Year 4, Cumulative | 90.00%
Year 5, Cumulative | 91.00%
Year 6, Cumulative | 91.60%
Year 7, Cumulative | 92.90%
Year 8, Cumulative | 93.40%
Year 9, Cumulative | 93.00%
Year 10, Cumulative | 92.20%
Other specialty |
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Line Items] |
Year 1 | 9.50%
Year 2 | 12.70%
Year 3 | 13.80%
Year 4 | 16.40%
Year 5 | 13.10%
Year 6 | 11.20%
Year 7 | 6.90%
Year 8 | 4.40%
Year 9 | 4.10%
Year 10 | 3.40%
Year 1, Cumulative | 9.50%
Year 2, Cumulative | 22.20%
Year 3, Cumulative | 36.00%
Year 4, Cumulative | 52.40%
Year 5, Cumulative | 65.50%
Year 6, Cumulative | 76.70%
Year 7, Cumulative | 83.60%
Year 8, Cumulative | 88.00%
Year 9, Cumulative | 92.10%
Year 10, Cumulative | 95.50%

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