Amount of fund to be distributed to those claiming derailment damages.

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- Definition

Loss Contingency, Damages Sought Previously, Value

+ References

No definition available.

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- Definition

Loss Contingency, Number Of Appeals From Bankruptcy Procedural Grounds

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Loss Contingency, Total Estimated Damages, Value

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- 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

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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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- 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

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Number of pending claims pertaining to a loss contingency.

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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.

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Contingencies - Legal Proceedings (Details) $ in Millions, $ in Millions				3 Months Ended
	Jan. 05, 2024 USD ($)	Aug. 30, 2023 CAD ($)	Oct. 20, 2022 CAD ($)	Mar. 31, 2024 CAD ($) claim appeal	Mar. 31, 2024 USD ($) claim appeal
Other Commitments [Line Items]
Number of appeals from bankruptcy procedural grounds \| appeal				2	2
Damaged rail cars and lost crude recovery
Other Commitments [Line Items]
Damages awarded	$ 3.9
AGQ Action and Promutuel Action \| Class Action Plaintiffs
Other Commitments [Line Items]
Number of plaintiffs \| claim				3	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				315
Initial value of damages sought				409
Lac-Megantic Rail Accident \| Initial Subrogated Insurers \| Subrogated insurance claim
Other Commitments [Line Items]
Value of damages sought				15
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 \| claim				48	48
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			$ 220