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v3.25.3

Reinsurance - Schedule of Loss Reinsurance Agreement Retention and Limits (Details) - USD ($) $ in Millions | 12 Months Ended
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May 31, 2026 | Nov. 01, 2025 | May 31, 2025
Effects of Reinsurance [Line Items] |  |  |
In Excess of | $ 0.7 | $ 1.0 | $ 0.7
Reinsurer Participation | 100.00% | 100.00% | 100.00%
1st Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 50.0 |  | $ 35.0
In Excess of | $ 50.0 |  | $ 35.0
Reinsurer Participation | 48.00% |  | 80.00%
2nd Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 65.0 |  | $ 60.0
In Excess of | $ 100.0 |  | $ 70.0
Reinsurer Participation | 100.00% |  | 95.33%
3rd Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 100.0 |  | $ 85.0
In Excess of | $ 165.0 |  | $ 130.0
Reinsurer Participation | 98.35% |  | 100.00%
4th Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 250.0 |  | $ 170.0
In Excess of | $ 265.0 |  | $ 215.0
Reinsurer Participation | 100.00% |  | 100.00%
5th Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 92.0 |  | $ 85.0
In Excess of | $ 515.0 |  | $ 385.0
Reinsurer Participation | 100.00% |  | 100.00%
Purple Re 2023-1 Cat Bond |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 100.0 |  | $ 100.0
In Excess of | $ 607.0 |  | $ 505.0
Reinsurer Participation | 100.00% |  | 100.00%
Purple Re 2023-2 Cat Bond |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 100.0 |  | $ 100.0
In Excess of | $ 607.0 |  | $ 505.0
Reinsurer Participation | 100.00% |  | 100.00%
Purple Re 2024-1 Cat Bond |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 300.0 |  | $ 300.0
In Excess of | $ 607.0 |  | $ 505.0
Reinsurer Participation | 70.00% |  | 70.00%
6th Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 150.0 |  | $ 35.0
In Excess of | $ 607.0 |  | $ 470.0
Reinsurer Participation | 30.00% |  | 100.00%
7th Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 150.0 |  | $ 150.0
In Excess of | $ 607.0 |  | $ 505.0
Reinsurer Participation | 30.00% |  | 30.00%
Purple Re 2025-1 Class B Cat Bond |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 250.0 |  |
In Excess of | $ 607.0 |  |
Reinsurer Participation | 50.00% |  |
8th Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 150.0 |  | $ 150.0
In Excess of | $ 607.0 |  | $ 505.0
Reinsurer Participation | 50.00% |  | 30.00%
9th Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 100.0 |  | $ 115.0
In Excess of | $ 607.0 |  | $ 505.0
Reinsurer Participation | 50.00% |  | 93.31%
Purple Re 2025-1 Class A Cat Bond |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 257.0 |  |
In Excess of | $ 607.0 |  |
Reinsurer Participation | 48.64% |  |
10th Layer |  |  |
Effects of Reinsurance [Line Items] |  |  |
Coverage | $ 257.0 |  | $ 28.0
In Excess of | $ 607.0 |  | $ 505.0
Reinsurer Participation | 51.36% |  | 100.00%

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- Definition Amount per event of risk undertaken originally by insurer that is not ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-3 + Details
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- Definition Amount per event of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-3 + Details
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- Definition Percentage of risk ceded to reinsurer in excess of risk undertaken originally by insurer that is not ceded to reinsurer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-3 + Details
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