XML 178 R104.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT - Cost Model (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Utilities    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, revalued assets, at cost $ 3,589 $ 3,407
Transport    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, revalued assets, at cost 7,349 1,741
Energy    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, revalued assets, at cost 7,646 4,189
Data Infrastructure    
Disclosure of detailed information about property, plant and equipment [line items]    
Property, plant and equipment, revalued assets, at cost $ 1,043 $ 444