Losses and LAE - Narrative (Details) - Primary Mortgage Product - Mortgage - default	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Liability for Claims and Claims Adjustment Expense [Line Items]
New primary defaults	27,003	28,128
Decrease in number of new primary default notices	(4.00%)
Default to claim rate estimate, gross, for new defaults	8.00%	8.00%

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.

No definition available.

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