Guarantor Obligations, Maximum Exposure, Percent Of Obligation

No definition available.

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- Definition

Number Of Letters Of Credit Issued

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

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- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482425/460-10-50-4

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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COMMITMENTS AND CONTINGENCIES - Schedule of Guarantees and Indemnifications (Details) $ in Millions	1 Months Ended
	Jan. 31, 2024 USD ($) letterOfCredit	Jan. 24, 2024	Jan. 01, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Guarantor Obligations [Line Items]
Maximum exposure guarantee				$ 4.4	$ 4.2
Eversource Investment LLC \| Letter of Credit
Guarantor Obligations [Line Items]
Maximum Exposure				15.2
Amount of long-term debt requested for issuance				$ 25.0
Eversource Investment LLC \| Letter of Credit \| Subsequent Event
Guarantor Obligations [Line Items]
Maximum Exposure	$ 8.0
Letters of credit issued \| letterOfCredit	2
North East Offshore, Sunrise Wind LLC, Revolution Wind, LLC and South Fork Wind, LLC
Guarantor Obligations [Line Items]
Ownership interest (in percent)				50.00%
Sunrise Wind LLC \| Subsequent Event
Guarantor Obligations [Line Items]
Ownership interest (in percent)		50.00%
South Fork Wind, LLC
Guarantor Obligations [Line Items]
Maximum Exposure				$ 7.1
Ownership interest (in percent)				50.00%
Eversource Investment LLC and South Fork Class B Member, LLC
Guarantor Obligations [Line Items]
Maximum Exposure				$ 1,520.0
South Fork Class B Member, LLC
Guarantor Obligations [Line Items]
Ownership interest (in percent)				50.00%
OREC Capacity Production \| Sunrise Wind LLC
Guarantor Obligations [Line Items]
Maximum Exposure				$ 15.4
Ownership interest (in percent)				50.00%
Maximum exposure guarantee				$ 11.0
OREC Capacity Production \| Sunrise Wind LLC \| Subsequent Event
Guarantor Obligations [Line Items]
Maximum exposure guarantee			$ 15.4
Surety Bonds \| Sunrise Wind LLC
Guarantor Obligations [Line Items]
Maximum Exposure				20.5
Tax Equity \| Eversource TEI LLC
Guarantor Obligations [Line Items]
Maximum Exposure				528.4
North East Offshore, Sunrise Wind LLC, Revolution Wind, LLC and South Fork Wind, LLC \| Offshore wind construction-related purchase agreements with third-party contractors
Guarantor Obligations [Line Items]
Maximum Exposure				1,941.1
North East Offshore, Sunrise Wind LLC, Revolution Wind, LLC and South Fork Wind, LLC \| Performance Guarantee
Guarantor Obligations [Line Items]
Maximum Exposure				3,030.0
Eversource Investment LLC and South Fork Class B Member, LLC \| Funding and Indemnification Obligations
Guarantor Obligations [Line Items]
Maximum Exposure				485.9
Sunrise Wind LLC \| OREC Capacity Production
Guarantor Obligations [Line Items]
Maximum Exposure				11.0
Sunrise Wind LLC \| Surety Bonds
Guarantor Obligations [Line Items]
Maximum Exposure				20.5
South Fork Wind, LLC \| Power Purchase Agreement Security
Guarantor Obligations [Line Items]
Maximum Exposure				7.1
Eversource Investment LLC \| Letters of Credit
Guarantor Obligations [Line Items]
Maximum Exposure				15.2
Eversource TEI LLC \| South Fork Wind Tax Equity
Guarantor Obligations [Line Items]
Maximum Exposure				0.0
Various \| Surety Bonds
Guarantor Obligations [Line Items]
Maximum Exposure				38.8
North East Offshore LLC \| Payment Guarantee
Guarantor Obligations [Line Items]
Maximum Exposure				$ 62.5
Percent of obligations guaranteed				50.00%