XML 145 R110.htm IDEA: XBRL DOCUMENT
v3.22.4

LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 14, 2022 | Nov. 30, 2022 | Jun. 14, 2022 | Dec. 31, 2021
--- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 19,723,994 |  |  |  | $ 17,023,577
Interest included in payment to settle spent nuclear fuel obligation | 8,800 |  |  |  | 8,700
CL&P |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | 4,216,488 |  |  |  | 4,215,379
PSNH |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | 1,134,914 |  |  |  | 1,163,833
Line of Credit | NSTAR Gas |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount of long-term debt requested for issuance |  |  |  | $ 325,000 |
Line of Credit | CL&P |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount of long-term debt requested for issuance |  |  | $ 1,150,000 |  |
Line of Credit | PSNH |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount of long-term debt requested for issuance |  | $ 600,000 |  |  |
Pre-1983 Spent Nuclear Fuel Obligation (CYAPC) |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 11,900 |  |  |  | $ 11,700

X
- Definition Amount represents the interest included in the payment to settle the spent nuclear fuel obligation + References No definition available. + Details
Name: | es_InterestIncludedInPaymentToSettleSpentNuclearFuelObligation
Namespace Prefix: | es_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=es_TheConnecticutLightAndPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=es_PublicServiceCompanyOfNewHampshirePSNHMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=es_NSTARGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=es_SpentNuclearFuelObilgationCyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |