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INVESTMENT IN ASSOCIATES AND JOINT VENTURES - Balance Sheet Impact of Investments (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Associates And Joint Ventures [Line Items]    
Current Assets $ 4,896 $ 3,711
Non-Current Assets 69,065 57,620
Total assets 73,961 61,331
Current Liabilities 8,661 5,524
Non-Current Liabilities 38,909 34,134
Total liabilities 47,570 39,658
Total    
Disclosure Of Associates And Joint Ventures [Line Items]    
Current Assets 2,997 2,948
Non-Current Assets 49,972 51,725
Total assets 52,969 54,673
Current Liabilities 4,578 3,972
Non-Current Liabilities 27,153 24,244
Total liabilities 31,731 28,216
Total Net Assets 21,238 26,457
Other Ownership Interests 16,513 20,929
Partnership’s Share 4,725 5,528
Utilities    
Disclosure Of Associates And Joint Ventures [Line Items]    
Current Assets 359 646
Non-Current Assets 5,723 6,142
Total assets 6,082 6,788
Current Liabilities 444 487
Non-Current Liabilities 3,738 4,238
Total liabilities 4,182 4,725
Total Net Assets 1,900 2,063
Other Ownership Interests 1,670 1,810
Partnership’s Share 230 253
Transport    
Disclosure Of Associates And Joint Ventures [Line Items]    
Current Assets 1,356 1,266
Non-Current Assets 24,437 25,762
Total assets 25,793 27,028
Current Liabilities 2,172 1,959
Non-Current Liabilities 13,044 9,836
Total liabilities 15,216 11,795
Total Net Assets 10,577 15,233
Other Ownership Interests 8,260 12,474
Partnership’s Share 2,317 2,759
Midstream    
Disclosure Of Associates And Joint Ventures [Line Items]    
Current Assets 223 173
Non-Current Assets 6,275 6,392
Total assets 6,498 6,565
Current Liabilities 234 249
Non-Current Liabilities 4,087 4,033
Total liabilities 4,321 4,282
Total Net Assets 2,177 2,283
Other Ownership Interests 1,125 911
Partnership’s Share 1,052 1,372
Data    
Disclosure Of Associates And Joint Ventures [Line Items]    
Current Assets 1,055 841
Non-Current Assets 13,393 13,308
Total assets 14,448 14,149
Current Liabilities 1,727 1,263
Non-Current Liabilities 6,284 6,081
Total liabilities 8,011 7,344
Total Net Assets 6,437 6,805
Other Ownership Interests 5,350 5,672
Partnership’s Share 1,087 1,133
Corporate    
Disclosure Of Associates And Joint Ventures [Line Items]    
Current Assets 4 22
Non-Current Assets 144 121
Total assets 148 143
Current Liabilities 1 14
Non-Current Liabilities 0 56
Total liabilities 1 70
Total Net Assets 147 73
Other Ownership Interests 108 62
Partnership’s Share $ 39 11
Australian port operation    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 13.00%  
North American natural gas transmission operation    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 38.00%  
Loans and receivables $ 375 $ 500
Bottom of range | Utilities    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 11.00% 11.00%
Bottom of range | Transport    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 6.00% 6.00%
Bottom of range | Midstream    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 20.00% 20.00%
Bottom of range | Data    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 12.00% 12.00%
Bottom of range | Corporate    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 25.00% 25.00%
Top of range | Utilities    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 20.00% 20.00%
Top of range | Transport    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 49.00% 50.00%
Top of range | Midstream    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 38.00% 50.00%
Top of range | Data    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 21.00% 21.00%
Top of range | Corporate    
Disclosure Of Associates And Joint Ventures [Line Items]    
Ownership and voting Interest 50.00% 50.00%