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Reinsurance - Excess of Loss Reinsurance (Details) - Reinsurance Policy, Type [Axis]: Mortgage Insurance	12 Months Ended
	Dec. 31, 2022
Other Reinsurance | Essent Guaranty
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Amortization period	10 years
VIE | Mortgage Insurance Linked Notes | Radnor Re
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Reinsurance debt issued to cover insurance term	10 years
VIE | Radnor Re
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Amortization period	10 years

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- Definition

Reinsurance, Debt Issued To Cover Insurance, Term

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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