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Short Duration Contracts - Percentage annual payout - all segments (Details) | Dec. 31, 2023
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Insurance | Property, energy, marine and aviation |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 20.50%
Year Two | 43.70%
Year Three | 18.10%
Year Four | 6.00%
Year Five | 2.20%
Year Six | 1.00%
Year Seven | 2.60%
Year Eight | 1.90%
Year Nine | (0.40%)
Year Ten | 1.50%
Insurance | Third party occurrence business |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 3.50%
Year Two | 9.40%
Year Three | 11.50%
Year Four | 11.40%
Year Five | 9.90%
Year Six | 9.80%
Year Seven | 5.60%
Year Eight | 4.60%
Year Nine | 4.40%
Year Ten | 5.60%
Insurance | Third party claims-made business |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 4.10%
Year Two | 15.50%
Year Three | 16.50%
Year Four | 11.10%
Year Five | 14.30%
Year Six | 10.10%
Year Seven | 6.30%
Year Eight | 5.20%
Year Nine | 5.70%
Year Ten | 2.00%
Insurance | Multi-line and other specialty |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 34.00%
Year Two | 29.30%
Year Three | 11.30%
Year Four | 8.20%
Year Five | 4.50%
Year Six | 2.90%
Year Seven | 1.10%
Year Eight | 0.40%
Year Nine | 0.40%
Year Ten | 0.50%
Reinsurance | Casualty |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 2.80%
Year Two | 7.70%
Year Three | 12.10%
Year Four | 10.40%
Year Five | 11.40%
Year Six | 8.50%
Year Seven | 7.80%
Year Eight | 5.30%
Year Nine | 5.20%
Year Ten | 2.90%
Reinsurance | Property catastrophe |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 56.00%
Year Two | (17.50%)
Year Three | 47.20%
Year Four | (41.90%)
Year Five | (6.20%)
Year Six | 10.90%
Year Seven | 2.40%
Year Eight | 1.10%
Year Nine | (1.70%)
Year Ten | 0.00%
Reinsurance | Property excluding property catastrophe |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 25.00%
Year Two | 38.20%
Year Three | 14.20%
Year Four | 6.00%
Year Five | 4.40%
Year Six | 0.20%
Year Seven | 0.70%
Year Eight | 0.10%
Year Nine | 0.40%
Year Ten | 0.40%
Reinsurance | Marine and aviation |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 3.00%
Year Two | 28.80%
Year Three | 20.00%
Year Four | 13.00%
Year Five | 10.60%
Year Six | 3.40%
Year Seven | 2.20%
Year Eight | 1.00%
Year Nine | 3.80%
Year Ten | 0.40%
Reinsurance | Other specialty |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 28.60%
Year Two | 29.90%
Year Three | 13.90%
Year Four | 5.70%
Year Five | 4.50%
Year Six | 3.90%
Year Seven | 1.70%
Year Eight | 0.90%
Year Nine | 0.60%
Year Ten | 1.00%
Mortgage |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 5.10%
Year Two | 29.10%
Year Three | 24.20%
Year Four | 10.70%
Year Five | 4.70%
Year Six | 1.80%
Year Seven | 0.70%
Year Eight | 0.50%
Year Nine | 0.20%
Year Ten | 0.10%

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- Definition Percentage of average annual payout, after reinsurance, in the eighth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the fifth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the fourth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the ninth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the first year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the seventh year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the sixth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the tenth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4G -SubTopic 40 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-4G + Details
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