XML 54 R41.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Note 16 - Statutory Information (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract] |
Risk To Capital Calculation [Table Text Block] | Radian Guaranty’s Risk-to-capital calculation appears in the table below. For purposes of the Risk-to-capital calculation, as well as the Risk-to-capital requirements imposed by certain states, statutory capital is defined as the sum of statutory policyholders’ surplus plus statutory contingency reserves.
| September 30, 2018 |  | December 31, 2017
($ in millions) |  |  |
RIF, net (1) | $ | 40,241.6 |  |  | $ | 36,793.5 |
Common stock and paid-in capital | $ | 1,866.0 |  |  | $ | 1,866.0 |
Surplus Note | 100.0 |  |  | 100.0 |
Unassigned earnings (deficit) | (708.9 | ) |  | (765.0 | )
Statutory policyholders’ surplus | 1,257.1 |  |  | 1,201.0 |
Contingency reserve | 1,995.8 |  |  | 1,667.0 |
Statutory capital | $ | 3,252.9 |  |  | $ | 2,868.0 |
Risk-to-capital | 12.4:1 |  |  | 12.8:1
______________________ (1) Excludes risk ceded through reinsurance contracts (to third parties and affiliates) and RIF on defaulted loans.

X
- Definition Risk To Capital Calculation [Table Text Block] + References No definition available. + Details
Name: | rdn_StatutoryAccountingPracticesRiskToCapitalCalculationTableTextBlock
Namespace Prefix: | rdn_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | srt_SupplementaryInsuranceInformationAbstract
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration