XML 54 R45.htm IDEA: XBRL DOCUMENT v3.23.3

Reinsurance - Essent Guaranty's Excess of Insurance Linked Note and Loss Reinsurance Coverages and Retentions (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Radnor Re, Total
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	$ 147,078,565
Remaining Risk in Force	39,231,858
Remaining Reinsurance in Force	1,291,962
Remaining First Layer Retention	1,603,887
OXL, Total
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	89,508,319
Remaining Risk in Force	24,009,306
Remaining Reinsurance in Force	313,965
Remaining First Layer Retention	1,388,041
Reinsurance Policy, Type [Axis]: Vintage August 2022- June 2023 | Radnor Re 2023-1
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	31,014,596
Remaining Risk in Force	8,478,658
Remaining Reinsurance in Force	281,462
Remaining First Layer Retention	281,462
Reinsurance Policy, Type [Axis]: Vintage Year Aug 2020 - Mar 2021 | Radnor Re 2021-1 Ltd.
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	33,594,368
Remaining Risk in Force	8,642,916
Remaining Reinsurance in Force	339,120
Remaining First Layer Retention	278,796
Reinsurance Policy, Type [Axis]: Vintage Year Oct 2021 - Jul 2022 | Radnor Re 2022-1 Ltd.
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	32,132,944
Remaining Risk in Force	8,669,748
Remaining Reinsurance in Force	237,868
Remaining First Layer Retention	303,660
Reinsurance Policy, Type [Axis]: Vintage Year Apr 2021 - Sep 2021 | Radnor Re 2021-2 Ltd.
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	37,420,329
Remaining Risk in Force	10,079,502
Remaining Reinsurance in Force	361,449
Remaining First Layer Retention	279,231
Reinsurance Policy, Type [Axis]: Vintage Year Jan 2017 - Dec 2017 | XOL 2018-1
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	4,920,622
Remaining Risk in Force	1,297,126
Remaining Reinsurance in Force	57,250
Remaining First Layer Retention	421,003
Reinsurance Policy, Type [Axis]: Vintage Year Jan 2018 - Dec 2018 | Radnor Re 2019-1 Ltd.
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	5,730,888
Remaining Risk in Force	1,496,891
Remaining Reinsurance in Force	21,467
Remaining First Layer Retention	246,939
Reinsurance Policy, Type [Axis]: Vintage Year Jan 2018 - Dec 2018 | XOL 2019-1
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	5,730,888
Remaining Risk in Force	1,496,891
Remaining Reinsurance in Force	76,144
Remaining First Layer Retention	246,939
Reinsurance Policy, Type [Axis]: Vintage Year Jan 2019 - Dec 2019 | Radnor Re 2020-1 Ltd.
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	7,185,440
Remaining Risk in Force	1,864,143
Remaining Reinsurance in Force	50,596
Remaining First Layer Retention	213,798
Reinsurance Policy, Type [Axis]: Vintage Year Jan 2019 - Dec 2019 | XOL 2020-1
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	7,185,440
Remaining Risk in Force	1,864,143
Remaining Reinsurance in Force	38,579
Remaining First Layer Retention	213,798
Reinsurance Policy, Type [Axis]: Vintage Year Oct 2021 - Dec 2022 | XOL 2022-1
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Remaining Insurance in Force	71,671,369
Remaining Risk in Force	19,351,146
Remaining Reinsurance in Force	141,992
Remaining First Layer Retention	$ 506,301

X

- Definition

Reinsurance, Remaining Insurance In Force

+ References

No definition available.

+ Details

Name:	esnt_ReinsuranceRemainingInsuranceInForce
Namespace Prefix:	esnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Reinsurance, Remaining Reinsurance In Force

+ References

No definition available.

+ Details

Name:	esnt_ReinsuranceRemainingReinsuranceInForce
Namespace Prefix:	esnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Reinsurance, Remaining Risk In Force

+ References

No definition available.

+ Details

Name:	esnt_ReinsuranceRemainingRiskInForce
Namespace Prefix:	esnt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480149/944-235-S99-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480149/944-235-S99-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column C))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480149/944-235-S99-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column D))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480149/944-235-S99-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column E))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480149/944-235-S99-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column F))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480149/944-235-S99-2

+ Details

Name:	srt_ReinsurancePremiumsForInsuranceCompaniesByProductSegmentLineItems
Namespace Prefix:	srt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount per life of risk undertaken originally by insurer that is not ceded to reinsurer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479838/944-20-50-3

+ Details

Name:	us-gaap_ReinsuranceRetentionAmountRetainedPerLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_RadnorReTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_OXLMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Vintage August 2022- June 2023
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_RadnorRe20231Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Vintage Year Aug 2020 - Mar 2021
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_RadnorRe20211Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Vintage Year Oct 2021 - Jul 2022
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_RadnorRe20221LtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Vintage Year Apr 2021 - Sep 2021
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_RadnorRe20212LtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Vintage Year Jan 2017 - Dec 2017
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_XOL20181Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Vintage Year Jan 2018 - Dec 2018
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_RadnorRe20191Ltd.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_XOL20191Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Vintage Year Jan 2019 - Dec 2019
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_RadnorRe20201Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_XOL20201Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsuranceContractAxis=Vintage Year Oct 2021 - Dec 2022
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=esnt_XOL20221Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: