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ACQUISITION OF BUSINESSES - Additional Information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Apr. 04, 2017
Sep. 30, 2016
Dec. 31, 2015
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Aug. 18, 2016
Jul. 19, 2016
Jun. 28, 2016
Mar. 01, 2016
Disclosure of detailed information about business combination [line items]                    
Increase through business combinations, deferred tax liability       $ 930,000,000 $ 234,000,000          
Goodwill       1,301,000,000 502,000,000          
Revenues       3,535,000,000 2,115,000,000 $ 1,855,000,000        
Net income (loss)       574,000,000 528,000,000 [1] $ 391,000,000 [1]        
Deferred income tax liability       2,849,000,000 1,612,000,000          
Brazilian regulated gas transmission operation                    
Disclosure of detailed information about business combination [line items]                    
Proportion of ownership interest in subsidiary 28.00%                  
Consideration transferred $ 1,568,000,000                  
Cash 1,306,000,000                  
Deferred consideration $ 262,000,000                  
Period of payable from close of transaction 5 years                  
Acquisition-related costs recognised as expense for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination       8,000,000            
Increase through business combinations, deferred tax liability $ 893,000,000                  
Goodwill 804,000,000                  
Revenues       938,000,000            
Net income (loss)       495,000,000            
Brazilian regulated gas transmission operation | Consortium                    
Disclosure of detailed information about business combination [line items]                    
Consideration transferred 5,100,000,000                  
Cash 4,200,000,000                  
Deferred consideration $ 900,000,000                  
Aggregated individually immaterial business combinations                    
Disclosure of detailed information about business combination [line items]                    
Consideration transferred       27,000,000            
Cash       9,000,000            
Goodwill       11,000,000            
Revenues       24,000,000            
Net income (loss)       4,000,000            
Liabilities incurred       $ 18,000,000            
Australian port operation                    
Disclosure of detailed information about business combination [line items]                    
Consideration transferred             $ 145,000,000      
Cash             13,000,000      
Acquisition-related costs recognised as expense for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination         17,000,000          
Goodwill             199,000,000      
Goodwill not deductible tax purposes             $ 0      
Ownership interest     20.00%              
Other income   $ 123,000,000                
Reclassification adjustments on available-for-sale financial assets, net of tax   44,000,000                
Reclassification adjustments on exchange differences on translation, net of tax   $ 79,000,000                
Percentage of voting equity interests acquired             27.00%      
Common shares of Asciano Limited             $ 132,000,000      
Discount rate       15.00%            
Terminal value multiple       8.9            
Discrete cash flow period       10 years            
Australian port operation | Brookfield Consortium                    
Disclosure of detailed information about business combination [line items]                    
Cash             63,000,000      
Common shares of Asciano Limited             $ 442,000,000      
North American gas storage operation                    
Disclosure of detailed information about business combination [line items]                    
Consideration transferred               $ 227,000,000    
Business combinations, Pre-existing interest, Senior notes               141,000,000    
Cash               67,000,000    
Acquisition-related costs recognised as expense for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination         11,000,000          
Goodwill               82,000,000    
Goodwill not deductible tax purposes               $ 0    
Percentage of voting equity interests acquired               40.00%    
Deferred income tax liability               $ 82,000,000    
North American gas storage operation | Working Capital Credit Facility                    
Disclosure of detailed information about business combination [line items]                    
Current borrowings               $ 19,000,000    
Peruvian toll roads                    
Disclosure of detailed information about business combination [line items]                    
Consideration transferred                 $ 127,000,000  
Cash                 118,000,000  
Acquisition-related costs recognised as expense for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination         1,000,000          
Goodwill                 139,000,000  
Goodwill not deductible tax purposes                 $ 0  
Percentage of voting equity interests acquired                 17.00%  
Liabilities incurred         9,000,000       $ 9,000,000  
Deferred income tax liability                 139,000,000  
Peruvian toll roads | Brookfield Sponsored Infrastructure Fund                    
Disclosure of detailed information about business combination [line items]                    
Cash                 400,000,000  
Liabilities incurred                 $ 30,000,000  
Indian toll roads                    
Disclosure of detailed information about business combination [line items]                    
Consideration transferred                   $ 42,000,000
Cash                   $ 42,000,000
Acquisition-related costs recognised as expense for transaction recognised separately from acquisition of assets and assumption of liabilities in business combination         $ 2,000,000          
Percentage of voting equity interests acquired                   40.00%
Deferred income tax assets                   $ 10,000,000
Brazilian Regulated Gas Transmission Operation and other insignificant transactions                    
Disclosure of detailed information about business combination [line items]                    
Pro forma revenue       $ 3,911,000,000            
Pro forma net income       $ 751,000,000            
[1] Certain net income allocations have been reclassified to provide comparability with the current year consolidated statements of partnership capital.