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

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- Definition

Loss Contingency, Damages Sought Previously, Value

+ References

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- Definition

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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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- 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14557-108349

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- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

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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		9 Months Ended
	Oct. 20, 2022 CAD ($)	Sep. 30, 2022 CAD ($) claim	Sep. 30, 2022 USD ($) claim
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
Lac-Megantic Rail Accident \| WD Trustee \| Damaged rail cars and lost crude recovery
Other Commitments [Line Items]
Value of damages sought			6
Lac-Megantic Rail Accident \| WD Trustee \| Reimbursement for settlement paid by consignor
Other Commitments [Line Items]
Value of damages sought			110
Lac-Megantic Rail Accident \| WD Trustee \| Reimbursement for settlement paid by consignee
Other Commitments [Line Items]
Value of damages sought			$ 60
Remington Development Corporation legal claim \| Remington Development Corporation \| Breach of contract \| Subsequent Event
Other Commitments [Line Items]
Loss Contingency, Damages Awarded, Value	$ 164
Loss Contingency, Total Estimated Damages, Value	$ 200