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MARKETABLE SECURITIES (Tables)
 3 Months Ended
Mar. 31, 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 March 31, 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$211.4 $0.5 $(3.6)$208.3 $214.5 $5.1 $(0.2)$219.4 
Contractual Maturities of Available-for-Sale Debt Securities
As of March 31, 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)
$27.0 $27.0 
One to five years61.9 61.6 
Six to ten years36.3 35.5 
Greater than ten years86.2 84.2 
Total Debt Securities$211.4 $208.3 

(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 March 31, 2022As of December 31, 2021
Level 1:    
Mutual Funds and Equities$227.0 $254.2 
Money Market Funds26.0 31.3 
Total Level 1$253.0 $285.5 
Level 2:  
U.S. Government Issued Debt Securities (Agency and Treasury)$80.0 $81.3 
Corporate Debt Securities62.5 65.3 
Asset-Backed Debt Securities11.6 12.6 
Municipal Bonds11.7 12.3 
Other Fixed Income Securities16.5 16.6 
Total Level 2$182.3 $188.1 
Total Marketable Securities$435.3 $473.6