XML 81 R60.htm IDEA: XBRL DOCUMENT
v3.22.2.2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Provision for Uncollectible Accounts (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | $ 457,800 | $ 425,800 | $ 417,400 | $ 358,900
Uncollectible Expense | 10,700 | 12,000 | 40,753 | 39,690
Uncollectible Costs Deferred | 25,000 | 24,500 | 74,700 | 98,100
Write-Offs | (39,700) | (24,400) | (89,800) | (65,800)
Recoveries Collected | 3,800 | 3,800 | 14,500 | 10,800
Ending Balance | 457,600 | 441,700 | 457,600 | 441,700
CL&P |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 192,700 | 188,800 | 181,300 | 157,400
Uncollectible Expense | 4,100 | 3,600 | 10,816 | 10,183
Uncollectible Costs Deferred | 13,300 | 10,200 | 24,300 | 47,100
Write-Offs | (12,700) | (8,900) | (23,800) | (23,500)
Recoveries Collected | 1,200 | 1,800 | 6,000 | 4,300
Ending Balance | 198,600 | 195,500 | 198,600 | 195,500
NSTAR Electric |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 100,500 | 98,000 | 97,000 | 91,600
Uncollectible Expense | 3,500 | 5,100 | 12,159 | 12,477
Uncollectible Costs Deferred | 6,800 | 8,300 | 16,700 | 20,100
Write-Offs | (12,600) | (7,500) | (31,300) | (23,000)
Recoveries Collected | 1,300 | 1,100 | 4,900 | 3,800
Ending Balance | 99,500 | 105,000 | 99,500 | 105,000
PSNH |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 27,300 | 17,200 | 24,300 | 17,200
Uncollectible Expense | 3,500 | 1,200 | 8,060 | 4,381
Uncollectible Costs Deferred | 100 | 1,200 | 1,200 | 2,000
Write-Offs | (2,300) | (2,800) | (5,400) | (7,300)
Recoveries Collected | 200 | 200 | 600 | 700
Ending Balance | 28,800 | 17,000 | 28,800 | 17,000
Hardship Accounts |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 242,700 | 210,700 | 226,100 | 194,800
Uncollectible Expense | 0 | 0 | 0 | 0
Uncollectible Costs Deferred | 15,600 | 22,800 | 38,000 | 44,800
Write-Offs | (6,500) | (3,900) | (13,500) | (10,600)
Recoveries Collected | 300 | 300 | 1,500 | 900
Ending Balance | 252,100 | 229,900 | 252,100 | 229,900
Hardship Accounts | CL&P |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 152,100 | 145,600 | 144,600 | 129,100
Uncollectible Expense | 0 | 0 | 0 | 0
Uncollectible Costs Deferred | 11,300 | 4,500 | 22,300 | 25,700
Write-Offs | (5,000) | (3,500) | (9,400) | (8,700)
Recoveries Collected | 200 | 200 | 1,100 | 700
Ending Balance | 158,600 | 146,800 | 158,600 | 146,800
Hardship Accounts | NSTAR Electric |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 45,000 | 35,900 | 43,300 | 39,700
Uncollectible Expense | 0 | 0 | 0 | 0
Uncollectible Costs Deferred | 2,800 | 11,800 | 4,900 | 8,300
Write-Offs | (300) | (100) | (700) | (400)
Recoveries Collected | 0 | 0 | 0 | 0
Ending Balance | 47,500 | 47,600 | 47,500 | 47,600
Retail (Non-Hardship), Wholesale, and Other |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 215,100 | 215,100 | 191,300 | 164,100
Uncollectible Expense | 10,700 | 12,000 | 40,800 | 39,700
Uncollectible Costs Deferred | 9,400 | 1,700 | 36,700 | 53,300
Write-Offs | (33,200) | (20,500) | (76,300) | (55,200)
Recoveries Collected | 3,500 | 3,500 | 13,000 | 9,900
Ending Balance | 205,500 | 211,800 | 205,500 | 211,800
Retail (Non-Hardship), Wholesale, and Other | CL&P |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 40,600 | 43,200 | 36,700 | 28,300
Uncollectible Expense | 4,100 | 3,600 | 10,800 | 10,200
Uncollectible Costs Deferred | 2,000 | 5,700 | 2,000 | 21,400
Write-Offs | (7,700) | (5,400) | (14,400) | (14,800)
Recoveries Collected | 1,000 | 1,600 | 4,900 | 3,600
Ending Balance | 40,000 | 48,700 | 40,000 | 48,700
Retail (Non-Hardship), Wholesale, and Other | NSTAR Electric |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Balance | 55,500 | 62,100 | 53,700 | 51,900
Uncollectible Expense | 3,500 | 5,100 | 12,200 | 12,500
Uncollectible Costs Deferred | 4,000 | (3,500) | 11,800 | 11,800
Write-Offs | (12,300) | (7,400) | (30,600) | (22,600)
Recoveries Collected | 1,300 | 1,100 | 4,900 | 3,800
Ending Balance | $ 52,000 | $ 57,400 | $ 52,000 | $ 57,400

X
- Definition Accounts Receivable, Allowance For Credit Loss, Deferred Expense (Reversal) + References No definition available. + Details
Name: | es_AccountsReceivableAllowanceForCreditLossDeferredExpenseReversal
Namespace Prefix: | es_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 5: 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(4)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase in allowance for credit loss on accounts receivable, from recovery. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(5)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
Name: | us-gaap_ProvisionForDoubtfulAccounts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | dei_LegalEntityAxis=es_NstarElectricCompanyMember
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_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=es_HardshipAccountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=es_RetailNonHardshipWholesaleandOtherReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |