EXEMPT RELATED PARTY AND PARTY-IN-INTEREST TRANSACTIONS (Details) - EBP 002 - Common stock—Canadian Pacific Kansas City Limited stock - USD ($) |
12 Months Ended | ||
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May 27, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| EBP, Related Party and Party-in-Interest Transactions [Line Items] | |||
| Investment, number of shares (in shares) | 196,165 | 71,190 | |
| Investment, purchased, number of shares (in shares) | 14,316 | 12,144 | |
| Investment, sold, number of shares (in shares) | 32,705 | 13,660 | |
| Recorded dividend income | $ 65,875 | $ 30,140 | |
| Investment, transferred into plan, number of shares (in shares) | 143,334 | ||
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- Definition EBP, Investment, Number of Shares, TransferTo (From) Plan No definition available.
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- Definition Amount of increase in net asset available for benefit from dividend income on investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Number of shares or units of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of shares or units of investment purchased by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of shares or units of investment sold by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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/2009/role/commonPracticeRef
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