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MARKETABLE SECURITIES (Tables)
 6 Months Ended
Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]  
Summary of Available-for-Sale Debt Securities The following is a summary of the available-for-sale debt securities:
As of June 30, 2023As of December 31, 2022
Eversource
(Millions of Dollars)
Amortized CostPre-Tax
Unrealized Gains		Pre-Tax
Unrealized
Losses		Fair ValueAmortized CostPre-Tax
Unrealized Gains		Pre-Tax
Unrealized
Losses		Fair Value
Debt Securities$203.6 $0.1 $(10.9)$192.8 $201.6 $0.1 $(16.2)$185.5 
Contractual Maturities of Available-for-Sale Debt Securities
As of June 30, 2023, the contractual maturities of available-for-sale debt securities were as follows:
 
Eversource
(Millions of Dollars)
Amortized CostFair Value
Less than one year (1)
$46.6 $46.6 
One to five years31.5 30.6 
Six to ten years39.3 37.4 
Greater than ten years86.2 78.2 
Total Debt Securities$203.6 $192.8 

(1)    Amounts in the Less than one year category include securities in the CYAPC and YAEC spent nuclear fuel trusts, which are restricted and are classified in long-term Marketable Securities on the balance sheets. Amounts also include securities in Eversource’s non-qualified executive benefit trust, which are intended to be sold in 2023.
Marketable Securities Recorded at Fair Value on a Recurring Basis by Level The following table presents the marketable securities recorded at fair value on a recurring basis by the level in which they are classified within the fair value hierarchy:
Eversource
(Millions of Dollars)
As of June 30, 2023As of December 31, 2022
Level 1:    
Mutual Funds and Equities$164.7 $190.1 
Money Market Funds42.6 25.4 
Total Level 1$207.3 $215.5 
Level 2:  
U.S. Government Issued Debt Securities (Agency and Treasury)$81.9 $82.3 
Corporate Debt Securities41.5 46.1 
Asset-Backed Debt Securities6.4 8.6 
Municipal Bonds9.7 12.7 
Other Fixed Income Securities10.7 10.4 
Total Level 2$150.2 $160.1 
Total Marketable Securities$357.5 $375.6