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SIGNIFICANT ACCOUNTING POLICIES SIGNIFICANT ACCOUNTING POLICIES (Details)
Mar. 31, 2020
shares
Prospective Adoption of New Accounting Pronouncements [Line Items]  
Exchangeable shares issued as a result of the Holding LP Distribution, Brookfield 13,700,000
Exchangeable shares issued as a result of the Holding LP Distribution, Partnership 32,600,000
Percentage of issued and outstanding exchangeable shares held by holders of units 70.40%
Percentage of issued and outstanding exchangeable shares held by Brookfield 29.60%
Exchangeable shares issued as a result of the Holding LP Distribution, Total 46,300,000
Subsidiaries [Member]  
Prospective Adoption of New Accounting Pronouncements [Line Items]  
Percentage of voting interest in company 75.00%
Non-controlling Interest - Class A Shares, equity [Member]  
Prospective Adoption of New Accounting Pronouncements [Line Items]  
Brookfield Infrastructure Corporation, Special Distribution, Limited Partner Units, Conversion Ratio 1
Limited Partners 1 [Member]  
Prospective Adoption of New Accounting Pronouncements [Line Items]  
Brookfield Infrastructure Corporation, Special Distribution, Limited Partner Units, Conversion Ratio 9