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ACQUISITION OF ASSETS OF COLUMBIA GAS OF MASSACHUSETTS - Preliminary Allocation of the Cash Purchase Price (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Oct. 09, 2020
Business Acquisition [Line Items]      
Goodwill $ 4,453,618 $ 4,445,988  
CMA      
Business Acquisition [Line Items]      
Current Assets     $ 138,000
Restricted Cash     57,000
PP&E     1,184,000
Goodwill     50,000
Other Noncurrent Assets, excluding Goodwill     131,000
Other Current Liabilities     (81,000)
Other Noncurrent Liabilities     (310,000)
Cash Purchase Price     $ 1,169,000