XML 121 R107.htm IDEA: XBRL DOCUMENT
v3.20.4

Schedule II - Condensed Financial Information of Registrant - General - Additional Information (Detail) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 26, 2021 | Dec. 31, 2020 | Feb. 29, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Capital Contributions - UPCIC |  |  |  | $ 114,000,000 | $ 0 | $ 0
Received distributions from the earnings of subsidiaries |  |  |  | 151,000,000.0 | 121,300,000 | 96,600,000
UPCIC [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Capital Contributions - UPCIC |  | $ 114,000,000.0 | $ 30,000,000 |  |  |
Dividend paid to immediate parent company |  |  |  | 0 | 0 | $ 0
UPCIC [Member] | Subsequent Event [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Capital Contributions - UPCIC | $ 77,000,000.0 |  |  |  |  |
APPCIC [Member] |  |  |  |  |  |
Statutory Accounting Practices [Line Items] |  |  |  |  |  |
Dividend paid to immediate parent company |  |  |  | $ 0 | $ 0 |

X
- 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 -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(b)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 + Details
Name: | us-gaap_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromContributionsFromAffiliates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from parent as a source of financing that is recorded as additional paid in capital. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromContributionsFromParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=uve_UniversalPropertyAndCasualtyInsuranceCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=uve_AmericanPlatinumPropertyAndCasualtyInsuranceCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |