Business acquisitions and combinations (Schedule of Identifiable Assets Acquired and Liabilities) (Details) - CAD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Mar. 01, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Business Combination [Line Items] | |||
| Goodwill | $ 100 | $ 71 | |
| Iowa Northern Railway Company | |||
| Business Combination [Line Items] | |||
| Fair value of previously held equity method investment | $ 344 | ||
| Current assets | 10 | ||
| Properties | 426 | ||
| Other non-current assets | 10 | ||
| Current liabilities | (20) | ||
| Deferred income tax liabilities | (90) | ||
| Other non-current liabilities | (23) | ||
| Total identifiable net assets | 313 | ||
| Goodwill | $ 31 | ||
| Increase to net assets acquired | 2 | ||
| Decrease to goodwill | $ 2 |
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- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Recognized Asset Acquired to Liability Assumed, Excess (Less) No definition available.
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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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- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as other and current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of liability assumed in business combination and recognized at acquisition date, classified as other and current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of deferred tax liability assumed in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset acquired in excess of (less than) liability assumed in business combination and recognized at acquisition date. Excludes goodwill. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of liability assumed in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of asset acquired in business combination and recognized at acquisition date, classified as other and noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of property, plant, and equipment acquired in business combination and recognized at acquisition date. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value at acquisition date of equity interest in acquiree held by acquirer immediately before acquisition date in business combination achieved in stages. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of increase (decrease) from measurement period adjustment of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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