XML 58 R46.htm IDEA: XBRL DOCUMENT
v3.25.2

Contingencies - Legal Proceedings (Details) $ in Millions, $ in Millions |  |  |  |  |  |  | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 05, 2024 USD ($) | Oct. 20, 2023 CAD ($) | Aug. 30, 2023 CAD ($) | Jan. 13, 2023 plaintiff | Oct. 20, 2022 CAD ($) | Jan. 24, 2022 procedural_ground | Jun. 30, 2025 CAD ($) plaintiff claim | Jun. 30, 2025 USD ($) plaintiff claim
Damaged rail cars and lost crude recovery |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Damages awarded | $ 3.9 |  |  |  |  |  |  |
Lac-Megantic Rail Accident |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Number of plaintiffs | plaintiff |  |  |  | 3 |  |  |  |
Lac-Megantic Rail Accident | Claimed derailment damages |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Amount of fund to be distributed |  |  |  |  |  |  | $ 440 |
Lac-Megantic Rail Accident | Quebec Minister of Sustainable Development, Environment, Wildlife and Parks |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  | 95 |
Lac-Megantic Rail Accident | Attorney General of Quebec |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  | 231 |
Initial value of damages sought |  |  |  |  |  |  | 409 |
Lac-Megantic Rail Accident | Initial Subrogated Insurers | Subrogated insurance claim |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  | 14 |
Initial value of damages sought |  |  |  |  |  |  | $ 16 |
Number of subrogated insurer claims | claim |  |  |  |  |  |  | 8 | 8
Lac-Megantic Rail Accident | Additional Subrogated Insurers | Subrogated insurance claim |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  | $ 3 |
Number of subrogated insurer claims | claim |  |  |  |  |  |  | 2 | 2
Lac-Megantic Rail Accident | Class Action Plaintiffs |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  | $ 5 |
Number of plaintiffs | plaintiff |  |  |  |  |  |  | 48 | 48
Number of plaintiffs who opted out | plaintiff |  |  |  |  |  |  | 2 | 2
Number of appeals from bankruptcy procedural grounds | procedural_ground |  |  |  |  |  | 2 |  |
Lac-Megantic Rail Accident | MMAR Estate Representative | Damages for loss in business value |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  |  | $ 30.0
Lac-Megantic Rail Accident | WD Trustee | Damaged rail cars and lost crude recovery |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  |  | 6.0
Lac-Megantic Rail Accident | WD Trustee | Reimbursement for settlement paid by consignor |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  |  | 110.0
Lac-Megantic Rail Accident | WD Trustee | Reimbursement for settlement paid by consignee |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Value of damages sought |  |  |  |  |  |  |  | $ 60.0
Remington Development Corporation legal claim | Remington Development Corporation | Breach of contract |  |  |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |  |  |
Damages awarded |  |  | $ 165 |  | $ 164 |  |  |
Total estimated damage |  | $ 232 |  |  |  |  |  |

X
- Definition Amount of fund to be distributed to those claiming derailment damages. + References No definition available. + Details
Name: | cp_AmountofFundtobeDistributed
Namespace Prefix: | cp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Loss Contingency, Appeals, Number of Bankruptcy Procedural Grounds + References No definition available. + Details
Name: | cp_LossContingencyAppealsNumberOfBankruptcyProceduralGrounds
Namespace Prefix: | cp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss Contingency, Damages Sought Previously, Value + References No definition available. + Details
Name: | cp_LossContingencyDamagesSoughtPreviouslyValue
Namespace Prefix: | cp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Loss Contingency, Number of Opted-Out Plaintiffs Opted-Out + References No definition available. + Details
Name: | cp_LossContingencyNumberOfOptedOutPlaintiffsOptedOut
Namespace Prefix: | cp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss Contingency, Total Estimated Damages, Value + References No definition available. + Details
Name: | cp_LossContingencyTotalEstimatedDamagesValue
Namespace Prefix: | cp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of damages awarded to the plaintiff in the legal matter. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 + Details
Name: | us-gaap_LossContingencyDamagesAwardedValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 + Details
Name: | us-gaap_LossContingencyDamagesSoughtValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of plaintiffs that have filed claims pertaining to a loss contingency. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 + Details
Name: | us-gaap_LossContingencyNumberOfPlaintiffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of pending claims pertaining to a loss contingency. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 + Details
Name: | us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- 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. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=cp_LadingLossRecoveryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=cp_LacMeganticRailAccidentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=cp_ClaimedLossorDamagesDuetoDerailmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cp_QuebecMinisterofSustainableDevelopmentandEnvironmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cp_QuebecAttorneyGeneralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cp_InitialInsurerClaimantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=cp_SubrogatedInsuranceClaimMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cp_AdditionalInsurerClaimantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cp_PlaintiffMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cp_MMARMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=cp_DamagesforlossinbusinessvalueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cp_TheWDTrusteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=cp_ReimbursementforsettlementpaidbyconsignorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=cp_ReimbursementforsettlementpaidbyconsigneeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_LitigationCaseAxis=cp_RemingtonDevelopmentCorporationLegalClaimMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=cp_RemingtonDevelopmentCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=cp_BreachOfContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |