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CAPITAL MANAGEMENT - Changes in Invested Capital (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Jan. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Changes in Invested capital [Roll Forward]      
Opening balance $ 12,195 $ 12,281 $ 12,195
Net redemption of preferred units (220) 0 (220)
Issuance of perpetual subordinated notes $ 293 0 293
Issuance of limited partnership units, net of redemptions   0 13
Issuance of BIPC exchangeable LP Units   751 0
Ending balance   13,032 12,281
Weighted Average Invested Capital   $ 12,478 $ 12,270