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SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2019
Prospective Adoption of New Accounting Pronouncements [Line Items]        
Weighted average lessee's incremental borrowing rate applied to lease liabilities recognised at date of initial application of IFRS 16       5.00%
Direct operating costs $ (3,395) $ (2,208) $ (1,509)  
Interest expense 904 555 428  
Profit (loss) $ (650) $ (806) $ (574)  
Australian regulated terminal operation        
Disclosure of detailed information about intangible assets [line items]        
Remaining amortisation period of intangible asset 81 years      
Chilean toll roads        
Disclosure of detailed information about intangible assets [line items]        
Remaining amortisation period of intangible asset 14 years      
Indian toll roads        
Disclosure of detailed information about intangible assets [line items]        
Remaining amortisation period of intangible asset 17 years      
Peruvian toll roads        
Disclosure of detailed information about intangible assets [line items]        
Remaining amortisation period of intangible asset 23 years      
In Accordance With IFRS 16        
Prospective Adoption of New Accounting Pronouncements [Line Items]        
Lease liabilities       $ 1,200
Buildings | Top of range        
Disclosure of detailed information about property, plant and equipment [line items]        
Estimated useful lives 75 years      
Transmission stations, towers and related fixtures | Top of range        
Disclosure of detailed information about property, plant and equipment [line items]        
Estimated useful lives 40 years      
Leasehold improvements | Top of range        
Disclosure of detailed information about property, plant and equipment [line items]        
Estimated useful lives 50 years      
Plant and equipment | Top of range        
Disclosure of detailed information about property, plant and equipment [line items]        
Estimated useful lives 40 years      
Network systems | Top of range        
Disclosure of detailed information about property, plant and equipment [line items]        
Estimated useful lives 65 years      
Track | Top of range        
Disclosure of detailed information about property, plant and equipment [line items]        
Estimated useful lives 40 years      
District energy systems | Top of range        
Disclosure of detailed information about property, plant and equipment [line items]        
Estimated useful lives 50 years      
Gas storage assets | Top of range        
Disclosure of detailed information about property, plant and equipment [line items]        
Estimated useful lives 50 years