v3.26.1
RELATED PARTY TRANSACTIONS (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 29, 2025
USD ($)
Jun. 30, 2026
USD ($)
$ / shares
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
agreement
$ / shares
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
May 07, 2026
USD ($)
Mar. 31, 2026
USD ($)
Dec. 27, 2024
USD ($)
May 24, 2024
USD ($)
Mar. 28, 2023
USD ($)
Disclosure of transactions between related parties [line items]                        
Preferred shares (in dollars per share) | $ / shares   $ 25.00     $ 25.00              
Amount called on the equity commitment         $ 0   $ 0          
Receivables due from parent   $ 1,663,000,000     1,663,000,000   1,574,000,000          
Loans payable to parent   100,000,000     100,000,000   100,000,000          
Amounts payable, related party transactions   52,000,000     52,000,000   51,000,000          
Amounts receivable, related party transactions   11,000,000     11,000,000   $ 12,000,000          
Global intermodal logistics operation                        
Disclosure of transactions between related parties [line items]                        
Ownership interest             66.00%          
Gain on disposition $ 115,000,000   $ 115,000,000                  
Brookfield Infrastructure Holdings Corporation                        
Disclosure of transactions between related parties [line items]                        
Related party, equity commitment         $ 1,000,000,000              
Brookfield Infrastructure Partners LP | Global intermodal logistics operation                        
Disclosure of transactions between related parties [line items]                        
Gain on disposition $ 30,000,000   $ 30,000,000                  
Revolving Credit Facility With Brookfield                        
Disclosure of transactions between related parties [line items]                        
Borrowing agreements | agreement         2              
Borrowing, term         10 years              
Credit facility, maximum borrowing capacity   1,000,000,000     $ 1,000,000,000              
Senior Unsecured Revolving Credit Facility                        
Disclosure of transactions between related parties [line items]                        
Borrowing agreements | agreement         2              
Credit facility, maximum borrowing capacity   150,000,000     $ 150,000,000              
Borrowings   0     $ 0   $ 0          
Borrowings maturity, term         10 years              
Borrowings maturity, annual extensions period         1 year              
Brookfield Infrastructure                        
Disclosure of transactions between related parties [line items]                        
Loans payable to parent   $ 0     $ 0   0          
Borrowings, interest rate   0.20%     0.20%              
Interest accrued, on demand deposit   $ 1,000,000   $ 1,000,000 $ 2,000,000 $ 2,000,000            
Service Provider                        
Disclosure of transactions between related parties [line items]                        
Asset management fee as percent per quarter         0.3125%              
Asset management fee, percent         1.25%              
Services received, related party transactions   20,000,000   18,000,000 $ 39,000,000 34,000,000            
Subsidiary of Common Parent | Brookfield Office Properties Inc.                        
Disclosure of transactions between related parties [line items]                        
Services received, related party transactions   0   0 0 0            
Revenue from rendering of services, related party transactions (less than)   1,000,000   1,000,000 1,000,000 1,000,000            
Subsidiary of Common Parent | Brookfield Infrastructure                        
Disclosure of transactions between related parties [line items]                        
Receivables due from parent   1,487,000,000     1,487,000,000   1,435,000,000          
March Loan Agreement | Brookfield Infrastructure                        
Disclosure of transactions between related parties [line items]                        
Borrowings             56,000,000 $ 55,000,000 $ 55,000,000   $ 200,000,000 $ 250,000,000
Borrowings, adjustment to interest rate basis               2.10%        
Interest expense, related party transactions   1,000,000   1,000,000 1,000,000 2,000,000            
May Loan Agreement | Brookfield Infrastructure                        
Disclosure of transactions between related parties [line items]                        
Borrowings, adjustment to interest rate basis               2.10%        
Interest expense, related party transactions   1,000,000   1,000,000 1,000,000 1,000,000            
Noncash transaction loan                     24,000,000  
Borrowings outstanding             $ 44,000,000 $ 45,000,000 $ 45,000,000      
December Loan Agreement | Brookfield Infrastructure                        
Disclosure of transactions between related parties [line items]                        
Borrowings                   $ 17,000,000    
May 2024 Agreement | Brookfield Infrastructure                        
Disclosure of transactions between related parties [line items]                        
Borrowings                     $ 100,000,000  
Interest expense, related party transactions   $ 2,000,000   $ 2,000,000 $ 3,000,000 $ 4,000,000            
May 2024 Agreement | Brookfield Infrastructure | Loan Maturity Date of May 24, 2026                        
Disclosure of transactions between related parties [line items]                        
Borrowings, adjustment to interest rate basis                     2.10%