Dispositions (Details) - CAD ($) $ in Millions |
3 Months Ended | 6 Months Ended | 8 Months Ended | 10 Months Ended |
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2025 |
Sep. 02, 2025 |
Oct. 31, 2025 |
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| Belize Electricity | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Equity investment ownership | 33.00% | |||
| FortisTCI | Disposed of by sale | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Earnings from disposition | $ 7 | $ 12 | $ 19 | |
| Fortis Belize and Belize Electricity | Disposed of by sale | ||||
| Schedule of Equity Method Investments [Line Items] | ||||
| Earnings from disposition | $ 1 | $ 8 | $ 17 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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