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PARTNERSHIP CAPITAL - Capital Categories (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Nov. 30, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Changes in equity [abstract]        
Balance as   $ 25,554.0 $ 26,391.0 $ 21,673.0
Issue of equity   763.0 [1],[2] 13.0 [3] 2,974.0 [4]
Repurchased and cancelled [1]   (25.0)    
Balance as   34,016.0 25,554.0 26,391.0
Limited Partners 1        
Changes in equity [abstract]        
Balance as   5,372.0 5,702.0 4,233.0
Issue of equity   12.0 [1],[2] 13.0 [3] 545.0 [4]
Repurchased and cancelled [1]   (25.0)    
Balance as   5,321.0 5,372.0 5,702.0
Non-controlling Interest - Redeemable Partnership Units        
Changes in equity [abstract]        
Balance as   2,263.0 2,408.0 1,687.0
Issue of equity [4]       (400.0)
Balance as   2,190.0 $ 2,263.0 $ 2,408.0
Partners' capital        
Changes in equity [abstract]        
Repurchased and cancelled   $ (25.0)    
Repurchased and cancelled (in shares)   1,000,000 0 0
Partners' capital | Inter Pipeline        
Changes in equity [abstract]        
Issue of equity       $ 1,642.0
Issued for cash (in shares)       38,985,604
Partners' capital | Special General Partner        
Changes in equity [abstract]        
Balance as   $ 19.0 $ 19.0 $ 19.0
Opening balance (in shares)   2,400,631 2,400,631 2,400,631
Ending balance (in shares)   2,400,631 2,400,631 2,400,631
Balance as   $ 19.0 $ 19.0 $ 19.0
Partners' capital | Limited Partners 1        
Changes in equity [abstract]        
Balance as   $ 6,092.0 $ 6,074.0 $ 5,526.0
Opening balance (in shares)   458,380,315 457,901,280 443,147,915
Issue of equity   $ 12.0 [1],[2] $ 13.0 [3] $ 545.0 [4]
Issued for cash (in shares) 14,200,000 416,225 338,953 14,564,499
Issuance of equity upon conversion, value   $ 4.0 $ 5.0 $ 3.0
Issuance of equity upon conversion, shares (in shares)   168,839 140,082 188,866
Repurchased and cancelled [1]   $ (12.0)    
Repurchased and cancelled (in shares)   908,674    
Ending balance (in shares)   461,343,972 458,380,315 457,901,280
Number of shares converted (in shares)   3,287,267    
Units converted to exchangeable shares, value   $ (100.0)    
Balance as   6,196.0 $ 6,092.0 $ 6,074.0
Partners' capital | Non-controlling Interest - Redeemable Partnership Units        
Changes in equity [abstract]        
Balance as   $ 2,728.0 $ 2,728.0 $ 2,328.0
Opening balance (in shares)   193,587,223 193,587,223 182,930,702
Issue of equity $ 400.0     $ 400.0
Issued for cash (in shares) 10,700,000     10,656,521
Ending balance (in shares)   190,299,956 193,587,223 193,587,223
Number of shares converted (in shares)   3,287,267    
Units converted to exchangeable shares, value   $ (100.0)    
Balance as   2,628.0 $ 2,728.0 $ 2,728.0
Partners' capital | Non-controlling interest— BIPC exchangeable shares        
Changes in equity [abstract]        
Balance as   $ 1,757.0 $ 1,755.0 $ (19.0)
Opening balance (in shares)   110,567,671 110,157,540 67,441,451
Issue of equity   $ 751.0   $ 128.0
Issued for cash (in shares)   21,094,441   3,210,037
Conversions   $ 4.0 $ 2.0 $ 4.0
Conversions (in shares)   209,954 410,131 520,448
Ending balance (in shares)   131,872,066 110,567,671 110,157,540
Balance as   $ 2,512.0 $ 1,757.0 $ 1,755.0
Partners' capital | Non-controlling Interest - Exchange LP Units, equity        
Changes in equity [abstract]        
Balance as   $ 401.0 $ 408.0 $ 156.0
Opening balance (in shares)   6,464,819 7,015,032 1,611,508
Issue of equity       $ 259.0
Issuance of BIPC exchangeable LP units (in shares)     $ 6,100,000 $ 6,112,838
Conversions   $ (8.0) $ (7.0) $ (7.0)
Conversions (in shares)   (378,793) (550,213) (709,314)
BIPC exchangeable shares   $ (4.0) $ (5.0) $ (5.0)
BIPC exchangeable LP converted to BIPC exchangeable (in shares)   $ (200,000) $ (400,000) $ (600,000)
Exchange LP conversion (in shares)   (200,000) (200,000) (100,000)
Ending balance (in shares)   6,086,026 6,464,819 7,015,032
Exchange LP unit conversion, value   $ (4.0) $ (2.0) $ (2.0)
Balance as   393.0 401.0 408.0
Preferred Unitholders Capital        
Changes in equity [abstract]        
Balance as   $ 918.0 $ 1,138.0 $ 1,130.0
Opening balance (in shares)   43,901,312 55,881,062 57,867,650
Issue of equity   $ 0.0 $ 0.0 $ 194.0
Issued for cash (in shares)   0 0 8,000,000
Ending balance (in shares)   43,901,312 43,901,312 55,881,062
Repurchased and cancelled   $ 0.0 $ (220.0) $ (186.0)
Balance as   $ 918.0 $ 918.0 $ 1,138.0
[1] Refer to Note 27, Partnership Capital.
[2] Refer to Note 6, Acquisition of Businesses
[3] Refer to Note 27, Partnership Capital.
[4] Refer to Note 27, Partnership Capital.