SHORT-TERM AND LONG-TERM DEBT (Tables)

9 Months Ended

Sep. 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
	September 30, 2022		December 31, 2021		September 30, 2022		December 31, 2021		September 30, 2022		December 31, 2021
(Millions of Dollars)
Eversource Parent Commercial Paper Program	$	401.5	$	1,343.0	$	1,598.5	$	657.0	3.34	%	0.31	%
NSTAR Electric Commercial Paper Program	—		162.5		650.0		487.5		—	%	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
NSTAR Electric 4.95% 2022 Debentures	400.0			September 2022	September 2052	Refinanced investments in eligible green expenditures, which were previously financed using short-term debt from October 1, 2020 through June 30, 2022
NSTAR Electric 2.375% 2012 Debentures	(400.0)			October 2022	October 2022	Paid at maturity
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 3.375% 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
Yankee Gas 4.31% Series U First Mortgage Bonds	100.0			September 2022	September 2032	Repaid short-term debt, paid capital expenditures and for general corporate purposes
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
Aquarion Water Company of New Hampshire 4.45% General Mortgage Bonds	(5.0)		0	July 2022	July 2022	Paid at maturity
Aquarion Water Company of Connecticut 4.69% Senior Notes	70.0			August 2022	September 2052	Repaid short-term debt