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MARKETABLE SECURITIES (Tables)
 9 Months Ended
Sep. 30, 2022
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 September 30, 2022As of December 31, 2021
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$205.4 $0.2 $(15.5)$190.1 $214.5 $5.1 $(0.2)$219.4 
Contractual Maturities of Available-for-Sale Debt Securities
As of September 30, 2022, the contractual maturities of available-for-sale debt securities were as follows:
 
Eversource
(Millions of Dollars)
Amortized CostFair Value
Less than one year (1)
$22.4 $22.4 
One to five years56.0 54.6 
Six to ten years40.8 36.7 
Greater than ten years86.2 76.4 
Total Debt Securities$205.4 $190.1 

(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.
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 September 30, 2022As of December 31, 2021
Level 1:    
Mutual Funds and Equities$193.4 $254.2 
Money Market Funds20.8 31.3 
Total Level 1$214.2 $285.5 
Level 2:  
U.S. Government Issued Debt Securities (Agency and Treasury)$77.4 $81.3 
Corporate Debt Securities54.8 65.3 
Asset-Backed Debt Securities9.5 12.6 
Municipal Bonds13.0 12.3 
Other Fixed Income Securities14.6 16.6 
Total Level 2$169.3 $188.1 
Total Marketable Securities$383.5 $473.6