This element represents disclosure of the aggregate cash dividends paid to the entity by consolidated subsidiaries.

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

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-SubTopic 405
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477787/942-405-45-2

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- Definition

The cash outflow from advancing money to an affiliate (an entity that is related but not strictly controlled by the entity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

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Balance Type:	credit
Period Type:	duration

- Definition

Aggregate dividends declared during the period for each share of preferred stock outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Capital Contribution To Subsidiaries

+ References

No definition available.

+ Details

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Namespace Prefix:	uve_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Equity.

+ References

No definition available.

+ Details

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Namespace Prefix:	uve_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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STOCKHOLDERS’ EQUITY - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended				12 Months Ended
STOCKHOLDERS’ EQUITY - Narrative (Details) - USD ($)	Feb. 28, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Equity [Line Items]
Series A preferred stock pays a cumulative dividend						$ 1.00	$ 1.00	$ 1.00
Dividend paid to immediate parent company						$ 94,400,000	$ 164,100,000	$ 231,900,000
Parent Company
Equity [Line Items]
Dividend paid to immediate parent company						94,400,000	164,100,000	231,900,000
Capital contribution to subsidiaries						61,985,000	89,490,000	129,490,000
Issuance of note receivable to subsidiary						0	0	114,000,000
Parent Company \| Subordinated Surplus Debenture
Equity [Line Items]
Issuance of note receivable to subsidiary						134,000,000
UPCIC
Equity [Line Items]
Dividend paid to immediate parent company						0	0
Capital contribution to subsidiaries						44,000,000.0	72,000,000.0	84,000,000.0
UPCIC \| Subsequent Event
Equity [Line Items]
Capital contribution to subsidiaries	$ 12,100,000
UPCIC \| Parent Company
Equity [Line Items]
Dividend paid to immediate parent company						0	0	0
Capital contribution to subsidiaries						44,000,000	72,000,000	84,000,000
UPCIC \| Parent Company \| Subordinated Surplus Debenture
Equity [Line Items]
Issuance of note receivable to subsidiary						0	0	110,000,000
APPCIC
Equity [Line Items]
Dividend paid to immediate parent company						0	0
Capital contribution to subsidiaries						0	0	3,000,000.0
APPCIC \| Parent Company
Equity [Line Items]
Dividend paid to immediate parent company						0	0	0
Capital contribution to subsidiaries						0	0	3,000,000
APPCIC \| Parent Company \| Subordinated Surplus Debenture
Equity [Line Items]
Issuance of note receivable to subsidiary						0	0	$ 4,000,000
Series A
Equity [Line Items]
Series A preferred stock pays a cumulative dividend		$ 0.25	$ 0.25	$ 0.25	$ 0.25
Preferred stock aggregate dividends						$ 10,000	$ 10,000