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Reinsurance - Schedule of Loss Reinsurance Agreement Retention and Limits (Details) - USD ($) $ in Millions	12 Months Ended
	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

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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

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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

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