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RATE REDUCTION BONDS AND VARIABLE INTEREST ENTITIES (Tables)
3 Months Ended
Mar. 31, 2021
Rate Reduction Bonds and Variable Interest Entity [Abstract]  
Summary of the Impact of Funding on the Balance Sheets and Income Statements The following tables summarize the impact of PSNH Funding on PSNH's balance sheets and income statements:
(Millions of Dollars)
Balance Sheet:As of March 31, 2021As of December 31, 2020
Restricted Cash - Current Portion (included in Current Assets)$21.9 $36.8 
Restricted Cash - Long-Term Portion (included in Other Long-Term Assets)3.2 2.1 
Securitized Stranded Cost (included in Regulatory Assets)511.3 522.1 
Other Regulatory Liabilities (included in Regulatory Liabilities)11.5 9.1 
Accrued Interest (included in Other Current Liabilities)3.1 8.0 
Rate Reduction Bonds - Current Portion43.2 43.2 
Rate Reduction Bonds - Long-Term Portion475.3 496.9 

(Millions of Dollars)
Income Statement:
For the Three Months Ended
March 31, 2021March 31, 2020
Amortization of RRB Principal (included in Amortization of Regulatory Assets, Net)$10.8 $10.8 
Interest Expense on RRB Principal (included in Interest Expense)4.7 5.0