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Statutory Information - Narrative (Details) $ in Millions | 1 Months Ended | 9 Months Ended
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Oct. 31, 2024 USD ($) | Apr. 30, 2024 USD ($) | Sep. 30, 2024 jurisdiction
Statutory capital requirements [Abstract] |  |  |
Number of jurisdictions with risk-to-capital requirements (in jurisdictions) | jurisdiction |  |  | 16
Maximum permitted risk-to-capital ratio commonly applied |  |  | 25 to 1
Mortgage Guaranty Insurance Corporation |  |  |
Statutory capital requirements [Abstract] |  |  |
Percentage of statutory policyholders surplus used to determine maximum allowable dividends (as a percent) |  |  | 10.00%
Adjusted statutory net income measurement period (in years) |  |  | 3 years
Adjusted statutory net income dividend payment measurement period (in years) |  |  | 2 years
Dividend paid to MGIC Investment Corporation |  | $ 350 |
Mortgage Guaranty Insurance Corporation | Subsequent Event |  |  |
Statutory capital requirements [Abstract] |  |  |
Dividend paid to MGIC Investment Corporation | $ 400 |  |

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- Definition The number of jurisdictions that require a mortgage insurer to maintain a minimum amount of statutory capital relative to the risk in force (or a similar measure) in order for the mortgage insurer to continue to write new business. This is generally referred to as a risk-to-capital requirement. + References No definition available. + Details
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- Definition The percentage of statutory policyholders' surplus, as defined, as of the preceding calendar year end which is used in the determination of the maximum allowable dividends that the insurance subsidiaries may pay in any twelve-month period without regulatory approval by the Office of the Commissioner of Insurance of the State of Wisconsin. + References No definition available. + Details
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- Definition Statutory Accounting Practices, Statutory Amount Available For Dividend Payments Without Regulatory Approval, Measurement, Measurement Period + References No definition available. + Details
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- Definition Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval, Measurement, Dividend Payment Period + References No definition available. + Details
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- References No definition available. + Details
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- Definition This element represents disclosure of the aggregate cash dividends paid to the entity by consolidated subsidiaries. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3 + Details
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- Definition For insurance companies, a description of the minimum regulatory capital requirements imposed by state insurance regulators, and restrictions on dividend payments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477908/944-505-50-1 + Details
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- Details
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- Details
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