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CRITICAL ACCOUNTING ESTIMATES AND JUDGMENTS (Tables)
 12 Months Ended
Dec. 31, 2020
CRITICAL ACCOUNTING ESTIMATES AND JUDGMENTS [Abstract]  
Book Value of PPE Related Services
As of December 31, 2020, the Company’s book value of PPE related to Natural Gas Transportation and Other services cash-generating units tested for impairment are described as follows:

     In millions
    
  
Amounts before impairment charge
  
Impairment charge
  
Amounts after impairment charge
 
Natural Gas Transportation
  
70,036
   
(3,114
)
  
66,922
 
Other services
  
25,152
   
-
   
25,152
 
Total
  
95,188
   
(3,114
)
  
92,074