v3.26.1
N-2 - USD ($)
 1 Months Ended 2 Months Ended 6 Months Ended 10 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2023
Jun. 30, 2026
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Feb. 29, 2024
 [2]
Nov. 30, 2023
 [2]
Oct. 31, 2023
 [2]
Cover [Abstract]                  
Entity Central Index Key     0001955857            
Amendment Flag     false            
Entity Inv Company Type     N-2            
Document Type     N-CSRS            
Entity Registrant Name     BROOKFIELD INFRASTRUCTURE INCOME FUND INC.            
Financial Highlights [Abstract]                  
Senior Securities [Table Text Block]    

 

Fiscal or Period End  Total Amount
Outstanding
Exclusive of Treasury
Securities		   Asset Coverage
per Unit1		   Involuntary
Liquidating
Preference Per
Unit		  Average
Market
Value per Unit
(Exclude Bank
Loans)		  Type of Senior
Security2
June 30, 2026  $–   $–   N/A  N/A  Loan Payable, Credit Facility, Reverse Repurchase Agreement
December 31, 2025   –    –   N/A  N/A  Loan Payable, Credit Facility, Reverse Repurchase Agreement
December 31, 2024   –    –   N/A  N/A  Loan Payable, Credit Facility, Reverse Repurchase Agreement
December 31, 2023   356,439,000    5,480   N/A  N/A  Loan Payable, Credit Facility, Reverse Repurchase Agreement

 

1Calculated by subtracting the Fund’s total liabilities (not including borrowings) from the Fund’s total assets and dividing by the total number of senior indebtedness units, where one unit equals $1,000 of senior indebtedness.
2“Senior security” means any bond, debenture, note, or similar obligation or instrument constituting a security and evidencing indebtedness, and any stock of a class having priority over any other class as to distribution of assets or payment of dividends.
           
Senior Securities Amount $ 356,439,000 $ 356,439,000      
Senior Securities Coverage per Unit [1] $ 5,480 $ 5,480      
Senior Securities, Note [Text Block]    

The following table sets forth information regarding the Fund’s outstanding senior securities as of June 30, 2026.

 

Fiscal or Period End  Total Amount
Outstanding
Exclusive of Treasury
Securities		   Asset Coverage
per Unit1		   Involuntary
Liquidating
Preference Per
Unit		  Average
Market
Value per Unit
(Exclude Bank
Loans)		  Type of Senior
Security2
June 30, 2026  $–   $–   N/A  N/A  Loan Payable, Credit Facility, Reverse Repurchase Agreement
December 31, 2025   –    –   N/A  N/A  Loan Payable, Credit Facility, Reverse Repurchase Agreement
December 31, 2024   –    –   N/A  N/A  Loan Payable, Credit Facility, Reverse Repurchase Agreement
December 31, 2023   356,439,000    5,480   N/A  N/A  Loan Payable, Credit Facility, Reverse Repurchase Agreement

 

1Calculated by subtracting the Fund’s total liabilities (not including borrowings) from the Fund’s total assets and dividing by the total number of senior indebtedness units, where one unit equals $1,000 of senior indebtedness.
2“Senior security” means any bond, debenture, note, or similar obligation or instrument constituting a security and evidencing indebtedness, and any stock of a class having priority over any other class as to distribution of assets or payment of dividends.

 

            
General Description of Registrant [Abstract]                  
Investment Objectives and Practices [Text Block]    

The Fund’s investment objective is to maximize total returns through growth of capital and current income. There can be no assurance that the Fund will achieve its investment objective.

            
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                  
Capital Stock [Table Text Block]    

4. CAPITAL SHARES

 

The Fund currently offers its Shares on a continuous basis and was granted Multi-Class Exemptive Relief by the SEC that permits the Fund to issue multiple classes of shares and to impose asset-based distribution fees and early-withdrawal fees. In addition to the Class I Shares, Class D Shares, Class S Shares, and Class T Shares, the Fund may offer additional classes of shares in the future.

 

The Shares are continuously offered each month at an offering price equal to NAV per share (plus an applicable front-end sales load, where relevant), which is calculated: (i) as of the close of business on the last business day of each month; (ii) on each date that Shares are to be repurchased in connection with the Fund’s offer to purchase Shares; and (iii) at such other times as the Board shall determine. The differences among the Shares relate to front-end sales loads and ongoing distribution and shareholder servicing fees. No front-end sales load or distribution and shareholder servicing fees are paid with respect to Class I Shares. The Class D Shares and the Class S Shares are each subject to a front-end sales load of up to 2.00% and 3.50%, respectively. Investors purchasing Class T Shares may be charged a sales load of up to 3.00% and a maximum dealer fee of 0.50% of the investment amount, for a total front-end sales load of up to 3.50%. Holders of the Shares have equal rights and privileges with each other, except with respect to front-end sales loads and certain ongoing distribution and shareholder servicing fees.

 

For the six months ended June 30, 2026, distribution and shareholder servicing fees totaled $7,676,000 and $3,000 for Class S and Class D Shares, respectively.

 

At June 30, 2026, Brookfield and its affiliates owned 0.46% of the Fund’s shares, and a Brookfield-managed fund, consisting entirely of third-party capital, owned 21.14% of the Fund’s shares.

 

Share transactions in the Fund’s shares were as follows:

 

   Six Months Ended
June 30, 2026		  

Year Ended

December 31, 2025

 
   Shares   Amount   Shares   Amount 
US$ THOUSANDS                    
Class I Shares:                    
Subscriptions   51,738   $568,386    109,893   $1,169,748 
Reinvestment of distributions   3,420    37,614    5,824    61,940 
Repurchases   (3,008)   (33,287)   (47,358)   (511,345)
Net increase   52,150   $572,713    68,359   $720,343 
                     
Class S Shares:                    
Subscriptions   40,541    444,596    66,838    707,875 
Reinvestment of distributions   1,859    20,393    2,511    26,648 
Repurchases   (1,559)   (17,224)   (1,599)   (17,105)
Net increase   40,841   $447,765    67,750   $717,418 
                     
Class D Shares:                    
Subscriptions   62    675    113    1,183 
Reinvestment of distributions   3    31    5    56 
Repurchases   —    —    (137)   (1,439)
Net increase   65   $706    (19)  $(200)

 

            
Outstanding Securities [Table Text Block]    

 

   Six Months Ended
June 30, 2026		  

Year Ended

December 31, 2025

 
   Shares   Amount   Shares   Amount 
US$ THOUSANDS                    
Class I Shares:                    
Subscriptions   51,738   $568,386    109,893   $1,169,748 
Reinvestment of distributions   3,420    37,614    5,824    61,940 
Repurchases   (3,008)   (33,287)   (47,358)   (511,345)
Net increase   52,150   $572,713    68,359   $720,343 
                     
Class S Shares:                    
Subscriptions   40,541    444,596    66,838    707,875 
Reinvestment of distributions   1,859    20,393    2,511    26,648 
Repurchases   (1,559)   (17,224)   (1,599)   (17,105)
Net increase   40,841   $447,765    67,750   $717,418 
                     
Class D Shares:                    
Subscriptions   62    675    113    1,183 
Reinvestment of distributions   3    31    5    56 
Repurchases   —    —    (137)   (1,439)
Net increase   65   $706    (19)  $(200)
            
Document Period End Date     Jun. 30, 2026            
Class I Shares [Member]                  
General Description of Registrant [Abstract]                  
Annual Dividend Payment [3]   (0.08) [2] $ (0.23)   (0.45) (0.44)      
NAV Per Share 10.07 [2] 10.07 [2] $ 11.13 10.44 $ 10.89 10.44     $ 10.00
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                  
Outstanding Security, Title [Text Block]     Class I Shares            
Outstanding Security, Authorized [Shares]     52,150   68,359        
Outstanding Security, Held [Shares]     349,996            
Class S Shares [Member]                  
General Description of Registrant [Abstract]                  
Annual Dividend Payment [3] (0.03) [2]   $ (0.19)   $ (0.36) (0.35)      
NAV Per Share $ 10.04 [2] $ 10.04 [2] $ 11.10 10.41 $ 10.86 10.41   $ 10.00  
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                  
Outstanding Security, Title [Text Block]     Class S Shares            
Outstanding Security, Authorized [Shares]     40,841   67,750        
Outstanding Security, Held [Shares]     182,695            
Class D Shares [Member]                  
General Description of Registrant [Abstract]                  
Annual Dividend Payment [3]     $ (0.22) (0.34) [2] $ (0.42)        
NAV Per Share     $ 11.00 $ 10.31 $ 10.77 $ 10.31 $ 10.00    
Capital Stock, Long-Term Debt, and Other Securities [Abstract]                  
Outstanding Security, Title [Text Block]     Class D Shares            
Outstanding Security, Authorized [Shares]     65   (19)        
Outstanding Security, Held [Shares]     226            
[1] Calculated by subtracting the Fund’s total liabilities (not including borrowings) from the Fund’s total assets and dividing by the total number of senior indebtedness units, where one unit equals $1,000 of senior indebtedness.
[2] Commencement of Operations.
[3] Distributions for annual periods are determined in accordance with federal income tax regulations.