SHORT-TERM AND LONG-TERM DEBT (Tables)

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

Borrowings Outstanding and Available under the Commecrial 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
	March 31, 2021		December 31, 2020		March 31, 2021		December 31, 2020		March 31, 2021		December 31, 2020
(Millions of Dollars)
Eversource Parent Commercial Paper Program	$	1,475.7	$	1,054.3	$	524.3	$	945.7	0.23	%	0.25	%
NSTAR Electric Commercial Paper Program	443.5		195.0		206.5		455.0		0.13	%	0.16	%

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
PSNH:
4.05% Series Q First Mortgage Bonds	$	(122.0)	March 2021	June 2021	Paid on par call date in advance of maturity date
Other:
Eversource Parent 2.50% Series I Senior Notes	(450.0)		February 2021	March 2021	Paid on par call date in advance of maturity date
Eversource Parent 2.55% Series S Senior Notes	350.0		March 2021	March 2031	Repaid short-term debt, including short-term debt used to redeem Series I Senior Notes
Aquarion Water Company of Connecticut 3.31% Senior    Notes	100.0		April 2021	April 2051	Repaid 5.50% Notes, redeemed short-term debt, paid capital expenditures and working capital
Aquarion Water Company of Connecticut 5.50% Notes	(40.0)		April 2021	April 2021	Paid at maturity