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NON-WHOLLY OWNED SUBSIDIARIES - Summarized Statement of Financial Position (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of subsidiaries [line items]      
Current Assets $ 6,686 $ 4,896  
Non-Current Assets 66,283 69,065  
Current Liabilities 8,377 8,661  
Non-Current Liabilities 39,038 38,909  
Revenues 14,427 11,537 $ 8,885
Net income (loss) attributable to partnership 407 1,093 394
U.K. regulated distribution operation      
Disclosure of subsidiaries [line items]      
Current Assets 264 249  
Non-Current Assets 4,821 4,961  
Current Liabilities 690 316  
Non-Current Liabilities 2,864 3,285  
Non-Controlling Interest in Operating Subsidiaries 298 314  
Partnership capital 1,233 1,295  
Brazilian regulated gas transmission operation      
Disclosure of subsidiaries [line items]      
Current Assets 737 668  
Non-Current Assets 3,362 3,115  
Current Liabilities 486 1,278  
Non-Current Liabilities 3,034 2,028  
Non-Controlling Interest in Operating Subsidiaries 460 389  
Partnership capital 119 88  
Revenues 1,314 1,074 942
Attributable to non-controlling interest, net income (loss) 506 361 309
Attributable to non-controlling interest, other comprehensive income (loss) (2) (87) (399)
Net income (loss) attributable to partnership 225 150 116
Attributable to unitholders, other comprehensive income (loss) (1) (31) (152)
Colombian natural gas distribution operation      
Disclosure of subsidiaries [line items]      
Current Assets 209 219  
Non-Current Assets 989 1,061  
Current Liabilities 155 162  
Non-Current Liabilities 535 522  
Non-Controlling Interest in Operating Subsidiaries 442 512  
Partnership capital 66 84  
Revenues 901 862  
Attributable to non-controlling interest, net income (loss) 47 34  
Attributable to non-controlling interest, other comprehensive income (loss) (23) (101)  
Net income (loss) attributable to partnership 10 8  
Attributable to unitholders, other comprehensive income (loss) (4) (24)  
North American residential infrastructure business      
Disclosure of subsidiaries [line items]      
Current Assets 405 269  
Non-Current Assets 5,096 4,583  
Current Liabilities 483 466  
Non-Current Liabilities 3,222 2,660  
Non-Controlling Interest in Operating Subsidiaries 1,322 1,215  
Partnership capital 474 511  
Revenues     1,274
Attributable to non-controlling interest, net income (loss)     70
Attributable to non-controlling interest, other comprehensive income (loss)     (32)
Net income (loss) attributable to partnership     29
Attributable to unitholders, other comprehensive income (loss)     (14)
Brazil electricity transmission operation      
Disclosure of subsidiaries [line items]      
Current Assets   104  
Non-Current Assets   1,457  
Current Liabilities   30  
Non-Current Liabilities   902  
Non-Controlling Interest in Operating Subsidiaries   436  
Partnership capital   193  
Revenues 224 90  
Attributable to non-controlling interest, net income (loss) 67 22  
Attributable to non-controlling interest, other comprehensive income (loss) 29 (6)  
Net income (loss) attributable to partnership 21 10  
Attributable to unitholders, other comprehensive income (loss) 22 (2)  
North American residential infrastructure business      
Disclosure of subsidiaries [line items]      
Revenues 1,695 1,444  
Attributable to non-controlling interest, net income (loss) 89 75  
Attributable to non-controlling interest, other comprehensive income (loss) 23 43  
Net income (loss) attributable to partnership 36 32  
Attributable to unitholders, other comprehensive income (loss) 9 18  
Indian gas transmission operation      
Disclosure of subsidiaries [line items]      
Current Assets 146 154  
Non-Current Assets 1,718 2,015  
Current Liabilities 308 287  
Non-Current Liabilities 949 1,191  
Non-Controlling Interest in Operating Subsidiaries 590 644  
Partnership capital 17 47  
Revenues 337    
Attributable to non-controlling interest, net income (loss) 51    
Attributable to non-controlling interest, other comprehensive income (loss) (56)    
Net income (loss) attributable to partnership 14    
Attributable to unitholders, other comprehensive income (loss) (15)    
UK residential infrastructure business      
Disclosure of subsidiaries [line items]      
Current Assets 26 5  
Non-Current Assets 111 151  
Current Liabilities 20 34  
Non-Current Liabilities 5 5  
Non-Controlling Interest in Operating Subsidiaries 95 99  
Partnership capital 17 18  
Revenues 84 2  
Attributable to non-controlling interest, net income (loss) (4) 0  
Attributable to non-controlling interest, other comprehensive income (loss) (11) 0  
Net income (loss) attributable to partnership (1) 0  
Attributable to unitholders, other comprehensive income (loss) (2) 0  
European residential infrastructure business      
Disclosure of subsidiaries [line items]      
Current Assets 43 24  
Non-Current Assets 190 213  
Current Liabilities 17 10  
Non-Current Liabilities 71 78  
Non-Controlling Interest in Operating Subsidiaries 128 132  
Partnership capital 17 17  
Revenues 106 89  
Attributable to non-controlling interest, net income (loss) (15) (6)  
Attributable to non-controlling interest, other comprehensive income (loss) (7) (8)  
Net income (loss) attributable to partnership (2) (1)  
Attributable to unitholders, other comprehensive income (loss) (1) (1)  
North American rail operation      
Disclosure of subsidiaries [line items]      
Current Assets 675 564  
Non-Current Assets 9,630 9,561  
Current Liabilities 544 564  
Non-Current Liabilities 4,856 4,930  
Non-Controlling Interest in Operating Subsidiaries 4,422 4,173  
Partnership capital 483 458  
Revenues 2,253 2,157 1,974
Attributable to non-controlling interest, net income (loss) 196 208 86
Attributable to non-controlling interest, other comprehensive income (loss) 202 131 (153)
Net income (loss) attributable to partnership 23 24 11
Attributable to unitholders, other comprehensive income (loss) 21 13 (16)
U.K. ports operation      
Disclosure of subsidiaries [line items]      
Current Assets 106 55  
Non-Current Assets 1,112 1,154  
Current Liabilities 67 40  
Non-Current Liabilities 833 779  
Non-Controlling Interest in Operating Subsidiaries 129 159  
Partnership capital 189 231  
Revenues 272 274  
Attributable to non-controlling interest, net income (loss) 6 17  
Attributable to non-controlling interest, other comprehensive income (loss) (15) 6  
Net income (loss) attributable to partnership 8 24  
Attributable to unitholders, other comprehensive income (loss) (21) 9  
Australian port operation      
Disclosure of subsidiaries [line items]      
Current Assets 237 262  
Non-Current Assets 531 581  
Current Liabilities 112 223  
Non-Current Liabilities 284 180  
Non-Controlling Interest in Operating Subsidiaries 265 316  
Partnership capital 107 124  
Revenues 458    
Attributable to non-controlling interest, net income (loss) (27)    
Attributable to non-controlling interest, other comprehensive income (loss) (21)    
Net income (loss) attributable to partnership (10)    
Attributable to unitholders, other comprehensive income (loss) (8)    
Peruvian toll roads      
Disclosure of subsidiaries [line items]      
Current Assets 127 98  
Non-Current Assets 1,202 1,132  
Current Liabilities 10 17  
Non-Current Liabilities 616 561  
Non-Controlling Interest in Operating Subsidiaries 584 541  
Partnership capital 119 111  
Revenues 111 96 81
Attributable to non-controlling interest, net income (loss) 15 6 7
Attributable to non-controlling interest, other comprehensive income (loss) 28 (57) (54)
Net income (loss) attributable to partnership 3 1 1
Attributable to unitholders, other comprehensive income (loss) 6 (11) (11)
Indian toll roads      
Disclosure of subsidiaries [line items]      
Current Assets 717 70  
Non-Current Assets 0 732  
Current Liabilities 478 166  
Non-Current Liabilities 0 364  
Non-Controlling Interest in Operating Subsidiaries 164 189  
Partnership capital 75 83  
Revenues 143 117 111
Attributable to non-controlling interest, net income (loss) 1 (25) (24)
Attributable to non-controlling interest, other comprehensive income (loss) (22) (6) (4)
Net income (loss) attributable to partnership 4 (9) (8)
Attributable to unitholders, other comprehensive income (loss) (11) (3) (2)
Canadian diversified midstream operation      
Disclosure of subsidiaries [line items]      
Current Assets 577 441  
Non-Current Assets 14,306 15,034  
Current Liabilities 2,370 2,875  
Non-Current Liabilities 7,342 7,283  
Non-Controlling Interest in Operating Subsidiaries 2,496 2,413  
Partnership capital 2,675 2,904  
Revenues 3,150 906  
Attributable to non-controlling interest, net income (loss) 115 59  
Attributable to non-controlling interest, other comprehensive income (loss) (163) 38  
Net income (loss) attributable to partnership 160 65  
Attributable to unitholders, other comprehensive income (loss) (239) 30  
North American gas storage operation      
Disclosure of subsidiaries [line items]      
Current Assets 539 258  
Non-Current Assets 1,515 1,479  
Current Liabilities 564 227  
Non-Current Liabilities 452 662  
Non-Controlling Interest in Operating Subsidiaries 633 525  
Partnership capital 405 323  
Revenues 246 371 143
Attributable to non-controlling interest, net income (loss) 64 95 (10)
Attributable to non-controlling interest, other comprehensive income (loss) 43 36 10
Net income (loss) attributable to partnership 45 65 (7)
Attributable to unitholders, other comprehensive income (loss) 38 22 6
Western Canadian natural gas gathering and processing operation      
Disclosure of subsidiaries [line items]      
Current Assets 177 130  
Non-Current Assets 3,633 3,932  
Current Liabilities 97 96  
Non-Current Liabilities 1,802 1,974  
Non-Controlling Interest in Operating Subsidiaries 1,365 1,422  
Partnership capital 546 570  
Revenues 561 551 501
Attributable to non-controlling interest, net income (loss) 32 62 29
Attributable to non-controlling interest, other comprehensive income (loss) (37) 52 (1)
Net income (loss) attributable to partnership 13 25 12
Attributable to unitholders, other comprehensive income (loss) (15) 21 (1)
North American data center operation      
Disclosure of subsidiaries [line items]      
Current Assets 70 51  
Non-Current Assets 1,528 1,401  
Current Liabilities 151 86  
Non-Current Liabilities 783 929  
Non-Controlling Interest in Operating Subsidiaries 476 312  
Partnership capital 188 125  
Revenues 221 249 273
Attributable to non-controlling interest, net income (loss) (75) (33) (32)
Attributable to non-controlling interest, other comprehensive income (loss) 28 13 (10)
Net income (loss) attributable to partnership (30) (13) (13)
Attributable to unitholders, other comprehensive income (loss) 11 5 (4)
Australian data center operation      
Disclosure of subsidiaries [line items]      
Current Assets 15 28  
Non-Current Assets 512 402  
Current Liabilities 14 23  
Non-Current Liabilities 160 119  
Non-Controlling Interest in Operating Subsidiaries 252 206  
Partnership capital 101 82  
Revenues 22 23 24
Attributable to non-controlling interest, net income (loss) 3 3 4
Attributable to non-controlling interest, other comprehensive income (loss) (9) (8) 12
Net income (loss) attributable to partnership 2 1 1
Attributable to unitholders, other comprehensive income (loss) (4) (3) 5
U.K. telecom towers operation      
Disclosure of subsidiaries [line items]      
Current Assets 46 40  
Non-Current Assets 940 880  
Current Liabilities 243 190  
Non-Current Liabilities 407 495  
Non-Controlling Interest in Operating Subsidiaries 254 177  
Partnership capital 82 58  
Revenues 57 59  
Attributable to non-controlling interest, net income (loss) (5) (19)  
Attributable to non-controlling interest, other comprehensive income (loss) (18) (1)  
Net income (loss) attributable to partnership (2) (6)  
Attributable to unitholders, other comprehensive income (loss) (5) 0  
Indian Telecom Towers Operation      
Disclosure of subsidiaries [line items]      
Current Assets 294 306  
Non-Current Assets 7,557 8,081  
Current Liabilities 547 407  
Non-Current Liabilities 5,988 6,034  
Non-Controlling Interest in Operating Subsidiaries 914 1,443  
Partnership capital 402 503  
Revenues 1,398    
Attributable to non-controlling interest, net income (loss) (7)    
Attributable to non-controlling interest, other comprehensive income (loss) (201)    
Net income (loss) attributable to partnership 2    
Attributable to unitholders, other comprehensive income (loss) (41)    
U.S. fiber business      
Disclosure of subsidiaries [line items]      
Current Assets 7    
Non-Current Assets 9    
Current Liabilities 4    
Non-Current Liabilities 0    
Non-Controlling Interest in Operating Subsidiaries 9    
Partnership capital 3    
Revenues 0    
Attributable to non-controlling interest, net income (loss) (4)    
Attributable to non-controlling interest, other comprehensive income (loss) 0    
Net income (loss) attributable to partnership (1)    
Attributable to unitholders, other comprehensive income (loss) 0    
Holding LP and other      
Disclosure of subsidiaries [line items]      
Current Assets 1,126 746  
Non-Current Assets 88 101  
Current Liabilities 761 889  
Non-Current Liabilities 3,483 2,470  
Non-Controlling Interest in Operating Subsidiaries 22 41  
Partnership capital (3,052) (2,553)  
Revenues 6 5  
Attributable to non-controlling interest, net income (loss) (106) 742  
Attributable to non-controlling interest, other comprehensive income (loss) 0 0  
Net income (loss) attributable to partnership (244) 450  
Attributable to unitholders, other comprehensive income (loss) 300 194  
Non-Wholly Owned Subsidiaries      
Disclosure of subsidiaries [line items]      
Current Assets 6,543 4,741  
Non-Current Assets 58,850 62,026  
Current Liabilities 8,121 8,386  
Non-Current Liabilities 37,686 37,451  
Non-Controlling Interest in Operating Subsidiaries 15,320 15,658  
Partnership capital 4,266 5,272  
Revenues 14,131 11,233 8,631
Attributable to non-controlling interest, net income (loss) 968 1,626 510
Attributable to non-controlling interest, other comprehensive income (loss) (252) 24 (130)
Net income (loss) attributable to partnership 351 966 237
Attributable to unitholders, other comprehensive income (loss) $ (38) $ 257 $ 364