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SHORT-TERM AND LONG-TERM DEBT (Tables) | 6 Months Ended
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Jun. 30, 2022
Debt Disclosure [Abstract] |
Borrowings Outstanding and Available under the Commercial Paper Programs | The amount of borrowings outstanding and available under the commercial paper programs were as follows:
| Borrowings Outstanding as of |  | Available Borrowing Capacity as of |  | Weighted-Average Interest Rate as of
| June 30, 2022 |  | December 31, 2021 |  | June 30, 2022 |  | December 31, 2021 |  | June 30, 2022 |  | December 31, 2021
(Millions of Dollars) |  |  |  |  |
Eversource Parent Commercial Paper Program | $ | 124.5 |  |  | $ | 1,343.0 |  |  | $ | 1,875.5 |  |  | $ | 657.0 |  |  | 1.81 | % |  | 0.31 | %
NSTAR Electric Commercial Paper Program | 63.0 |  |  | 162.5 |  |  | 587.0 |  |  | 487.5 |  |  | 1.63 | % |  | 0.14 | %
Summary of Long-Term Debt Issuance and Repayments | The following table summarizes long-term debt issuances and repayments:
(Millions of Dollars) | Issuance/(Repayment) |  | Issue Date or Repayment Date |  | Maturity Date |  | Use of Proceeds for Issuance/ Repayment Information
NSTAR Electric: |  |  |  |  |  |  |
4.55% 2022 Debentures | $ | 450.0 |  |  | May 2022 |  | June 2052 |  | Repaid short-term debt, paid capital expenditures and working capital
Other: |  |  |  |  |  |  |
Eversource Parent 2.90% Series V Senior Notes | 650.0 |  |  | February 2022 |  | March 2027 |  | Repaid Series K Senior Notes at maturity and short-term debt
Eversource Parent 3.38% Series W Senior Notes | 650.0 |  |  | February 2022 |  | March 2032 |  | Repaid Series K Senior Notes at maturity and short-term debt
Eversource Parent 4.20% Series X Senior Notes | 900.0 |  |  | June 2022 |  | June 2024 |  | Repaid short-term debt and paid working capital
Eversource Parent 4.60% Series Y Senior Notes | 600.0 |  |  | June 2022 |  | July 2027 |  | Repaid short-term debt and paid working capital
Eversource Parent 2.75% Series K Senior Notes | (750.0) |  |  | March 2022 |  | March 2022 |  | Paid at maturity
Yankee Gas 8.48% Series B First Mortgage Bonds | (20.0) |  |  | March 2022 |  | March 2022 |  | Paid at maturity
EGMA 4.70% Series C First Mortgage Bonds | 100.0 |  |  | June 2022 |  | June 2052 |  | Repaid short-term debt, paid capital expenditures and for general corporate purposes
NSTAR Gas 4.40% Series V First Mortgage Bonds | 125.0 |  |  | July 2022 |  | August 2032 |  | Repaid short-term debt, paid capital expenditures and for general corporate purposes

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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + 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 210.5-02.22) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28541-108399 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21506-112644 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69E -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21521-112644 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21538-112644 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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- Definition Tabular disclosure of short-term debt arrangements (having initial terms of repayment within one year or the normal operating cycle, if longer) including: (1) description of the short-term debt arrangement; (2) identification of the lender or type of lender; (3) repayment terms; (4) weighted average interest rate; (5) carrying amount of funds borrowed under the specified short-term debt arrangement as of the balance sheet date; (6) description of the refinancing of a short-term obligation when that obligation is excluded from current liabilities in the balance sheet; and (7) amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation. + 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) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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