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Short Duration Contracts - Percentage annual payout - all segments (Details) | Dec. 31, 2024
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Insurance | Property, energy, marine and aviation |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 21.50%
Year Two | 43.80%
Year Three | 17.20%
Year Four | 6.10%
Year Five | 2.40%
Year Six | 0.00%
Year Seven | 0.00%
Year Eight | 0.30%
Year Nine | (1.20%)
Year Ten | 0.00%
Insurance | Third party occurrence business |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 3.60%
Year Two | 10.00%
Year Three | 12.30%
Year Four | 13.20%
Year Five | 10.00%
Year Six | 10.00%
Year Seven | 5.50%
Year Eight | 5.50%
Year Nine | 4.80%
Year Ten | 2.20%
Insurance | Third party claims-made business |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 4.40%
Year Two | 15.60%
Year Three | 16.30%
Year Four | 10.90%
Year Five | 14.30%
Year Six | 10.90%
Year Seven | 7.00%
Year Eight | 6.20%
Year Nine | 4.00%
Year Ten | 2.40%
Insurance | Multi-line and other specialty |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 32.80%
Year Two | 29.20%
Year Three | 11.00%
Year Four | 8.50%
Year Five | 5.10%
Year Six | 3.30%
Year Seven | 1.70%
Year Eight | 1.10%
Year Nine | 0.80%
Year Ten | 1.40%
Reinsurance | Casualty |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 2.80%
Year Two | 8.30%
Year Three | 11.90%
Year Four | 11.90%
Year Five | 11.50%
Year Six | 8.40%
Year Seven | 7.50%
Year Eight | 7.20%
Year Nine | 6.00%
Year Ten | 3.40%
Reinsurance | Property catastrophe |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | (134.20%)
Year Two | 168.40%
Year Three | (22.50%)
Year Four | 213.90%
Year Five | (38.40%)
Year Six | 9.10%
Year Seven | (12.10%)
Year Eight | 1.50%
Year Nine | (0.80%)
Year Ten | 9.40%
Reinsurance | Property excluding property catastrophe |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 23.60%
Year Two | 36.20%
Year Three | 14.70%
Year Four | 6.80%
Year Five | 4.70%
Year Six | 0.20%
Year Seven | 0.80%
Year Eight | 0.20%
Year Nine | 1.10%
Year Ten | 0.10%
Reinsurance | Marine and aviation |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 1.40%
Year Two | 28.90%
Year Three | 20.30%
Year Four | 13.80%
Year Five | 10.00%
Year Six | 4.90%
Year Seven | 2.30%
Year Eight | 1.40%
Year Nine | 0.60%
Year Ten | 0.40%
Reinsurance | Other specialty |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 27.70%
Year Two | 29.20%
Year Three | 14.20%
Year Four | 6.40%
Year Five | 5.20%
Year Six | 4.00%
Year Seven | 1.60%
Year Eight | 0.70%
Year Nine | 0.30%
Year Ten | 0.30%
Mortgage |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Year One | 4.50%
Year Two | 26.10%
Year Three | 23.70%
Year Four | 11.40%
Year Five | 7.20%
Year Six | 2.50%
Year Seven | 1.50%
Year Eight | 1.00%
Year Nine | 0.50%
Year Ten | 0.50%

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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://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -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://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -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://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -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://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -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://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -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://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
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