v3.26.1
Supplementary Cash Flow Information (Tables)
 6 Months Ended
Jun. 30, 2026
Supplemental Cash Flow Elements [Abstract]  
Schedule of Supplementary Cash Flow Information
QuarterYear-to-Date
($ millions)2026 2025 2026 2025 
Periods ended June 30
Change in working capital
Accounts receivable and other current assets61 106 65 82 
Prepaid expenses(30)(25)(39)(20)
Inventories(24)(36)(10)(32)
Regulatory assets - current portion(33)24 (35)20 
Accounts payable and other current liabilities(7)(173)54 (40)
Regulatory liabilities - current portion46 (28)32 (65)
13 (132)67 (55)
Non-cash financing activity
Common share dividends reinvested114 118 231 233 
As at June 302026 2025 
Non-cash investing activities
Accrued capital expenditures858 664 
Accrued contributions in aid of construction13 10